I know this video is a few months old now and some have been answered, but figured I'd throw my 2 cents maybe confirm some of the questions you asked. -USN does indeed stand for U.S. Navy. -We do use these phones as standard communication equipment on Navy and Coast Guard ships even today. -On my ship they're almost the exact same design (Hose-McCann branded though), except the speaker/mic units no longer unscrew. The handle to the cover threads are all one unit, to replace the speaker or mic you would unscrew the face covers like you did in the video and the unit pops out. -You are correct the speaker and mic are the exact same and are interchangeable. Also the phones can be used with powered amplifiers to provide a boost in volume for long runs or noisy environments. -As for the tape I'm not 100% but it may be EWARP (emergency water activate repair patch) which is a fiberglass cloth tape impregnated with water activated resin, it's usually used to repair pipes that have burst in a battle situation. There should be a push-to-talk momentary switch there that someone must have removed and covered the hole with the tape. Hope that helps, cheers. =)
I really enjoy your channel! Your curiosity about technology is amazing yet informative. Please continue to create videos such as this please. Your access to tech stores provides you with great opportunities to enlighten your subscribers to lesser known and forgotten technologies. It's freaking awesome!
I believe those were used with phone switching stations on ship where you had different switches for different areas such as bridge to engine room, Capt quarters, operations room, etc. Very cool piece of vintage gear. Coil acts as it's own pre amp.
Someone else mentioned this, but just to reiterate - pretty sure that coil is the actual voice coil for the speaker, with the moving coil connected to the moving diaphragm by that pin that you pressed on. I'm certain that the pin is mobile, but the system may just be so stiff (to give a high resonant frequency as to maintain sensitivity in the midrange frequencies) that it didn't move noticeably when you pressed on it. It's really unusual in its design, however, as the movement of the voice coil is actually perpendicular to the movement of the diaphragm, working against that peculiar horseshoe shaped magnet. Tear apart any other more contemporary speaker or microphone and the coil is attached directly onto the diaphragm via a rigid former, moving in a circular gap inside a puck shaped magnet. Have never seen anything quite like that before. Thanks for tearing this one down!
Our ship uses 3 methods of communication, we have a vacuum tube PA system and then if that fails we still use these same sound powered phones which still work fine even today. and if all of that were to get shot up we still have brass speak tubes, which is basically yelling through a long pipe to different compartments, but it works.
Pretty cool I see this came out a while ago so it may been mentioned. The housings may be made of early type plastic alloy. Not sure if it would be considered bakelite or phenolic alloys instead of plastic. Either way what I think is happening is the solvents are reacting to air at the surface. Leaves a slightly damp appearance and in some cases a noticeable puddle. Happens to old snap-on plastic handled screwdrivers. I had an old one my box and noticed the fluid and crusting of the surface looked just like your covers you removed. The fluid smelled bad and assumed it was the solvents. Sometimes older things like that have a distinct smell especially if they're not moved or used a lot. Bakelite smells like burnt material sometimes. Noticed that when I was turning some old rod into pool cue ferrules. Magical stuff for the old ways cue purist but that stuff has a shelf life and no two batches were made the same. I'm not a 100% sure but it sure looks like you have that decaying look going on to me. The time period could be way off can't remember my timelines for their use completely cause they made so many different types. I'm positive it's Bakelite or Phenolic Resin material now. It has the cloth pattern of the linen used in the making process. And if I had to guess I would say bakelite which was used in a lot of early electrical devices and "old style black phones" why it was stated liked that beats me had to check my facts when I saw linen pattern on the speaker cups.
Gotta tell you how I found this: I was looking at a 1952 issue of Popular Mechanics, and there was an ad in the back that advertised these as "government surplus". Not knowing electrical theory, I thought these HAD to be a scam. So I decided to research. And yours was the first video that popped up explaining this technology! :)
oh its just a website that lets you give like 1$ a month to your favorite creators, and you can get exclusive or early videos. so i do YouTUbe for a living now and cant rely just off the ad revenue, so any bit helps. i regularly upload a video on patreon and then only let everyone else see it a month later. however i feel strange bringing it up since i need to get off my ass and get some of my other projects going instead of asking people for funding. i recently got a printing press for free and am currently making space for it. i'm thinking i might start printing and selling my own pocket-guides someday to help fund my projects. ^^ or maybe i will finally just turn on ads for new videos. ya see for the past several years (since 2013 or so) its been a rule that i dont monetize a video until after most of my subscribers have seen it, so subscribers get to watch without ads. however i somewhat worry that might have damaged my channel a bit since YT doesnt like to promote videos that dont have ads. :/
Sound powered phones are essential during General Quarters during battle conditions and simulations. All communications of condition are communicated to Central Control of what type of fire or level of water flooding. Another everyday use is the intercom system where a Bosun's whistle is heard and announcements for smoking lamp is lit or put out, mail call,sweep down all stairways and passageways and etc.
+Rinoa Super-Genius > FWIW, these things allow for communication throughout a ship, even if all electrical power is lost. Besides telephone-style handsets, there are also sound-powered headsets with microphones worn by watchstanders/crewmembers at various stations aboard ship....
Pretty much. These were instituted pre-WW2. You had the intercomms like 1MC system which was powered, and the sound-powered system which was not externally powered. They replaced the older voice tubes of World War 1 (as the name implies, the old system were empty tubes through which you talked). All stations from gun mounts, radio, engineering, pilot house, etc had the sound powered system as a primary mode of communication to avoid loss of critical space comms during combat. You didn't want your CIC to be desynced from your gunners in combat by making them dependent on a vulnerable, externally powered intercomm. By 1939, all new ships like the revolutionary USS Sims used sound-powered phones as standard equipment, most US ships from WW1 had them installed, and every US sailor had been trained in them as standard comm and discipline. It was reputedly during this time that an old "hazing" ritual began, which is still used today: ordering newbie sailors to retrieve "sound-powered telephone batteries" (Sound-powered phones don't have batteries, of course, but the joke's on them until they figure that out).
This is definitely Navy, and I think you're right about the date code. After WWII, the Army and Navy shared contracts. Those items had "JAN" stamped on them for "Joint Army-Navy". I collect old vacuum tubes and see these stamps all the time.
thanks for sharing teardown. easy to understand how it works. heavy to handle, safe batteries with cutted sound. i like the spring in the wire, and the cone in the mic of the outside design.
You can use a speaker to act like a mic by yelling into it. the cone acts like the diaphragm in your phone and as the driver coil moves up and down in the magnetic field it will generate a ac current that will drive another speaker. when I was a kid we made wired walkie talkies like this
You have no idea how long I've been looking for another one of those. They're like fabled golden phoenix feathers. I have a few and have figured out how to use them in a bunker style intercom setup. You just need a buzzer system and a disconnect switch in a receiver so you don't have all the handsets pulling down the transmission power. Their all off until you pick up any two. You just buzz the room you want to talk to, the person in it picks up, and you talk. This can be done with an old crank style dynamo system. Hold the button and turn the crank. Instant buzzer. You can also use the transducers in those as a direct intercom. All you need is an old victrola horn to amplify the sound on both ends. I have lots of hackables if you'd be willing to trade.
yup, naval shipboard coms. The growlers used the handsets, during general quarters and battle stations the headsets with breastplate mounted mics were used for hands free type operations.
Hi Rinoa. Another fascinating video. Thanks for producing great content. I was looking at similar vintage phones trying to find the exact one and no luck yet but I noticed that a lot of them had markings right about where the tape is on the handle.
My friend is in the navy training to be a nuclear propulsions officer. Those are the phones they use in the older and newer submarines and aircraft carriers. in the event of a power failure or technical difficulty communication can still be maintained in order to problem solve effectively. In order to get many people to recieve a voice signal however it does need amplification of somesort
We used to use sound powered telephones in the u.s. navy when I was in bk in the 90s. Would think and hope they still use em on board all navy ships in case power loss was to happen or major issues like fires etc.. and they needed communication with one another. Really is amazing some of the things that we used that is considered old technology and most people wouldn’t use em anymore or even know about em, but when push comes to shove things like this rarely fail during emergency situation. Always good to have em as a bk up still for communication would hope on all our ships still today. Not sure if they do still use em but their dumb if they don’t.
it's a military field telephone. you run wire behind your crawling scouts, and they can call fire onto whatever "them" you feel a need to drop shells and bombs on. the whole set came with a hand crank dynamo rig, which rang the phone at the other end when cranked. the usn marking means it's probably marine corp issue. watch an old WW2 flick and you can see them in use 9 times out of 10. used them until the 70s, i think
It's standard telephony kit. In the old days there were two "technologies" available. Standard landlines were connected to a telephone exchange which (in the UK, which is what I know) was in turn either connected to a manual switchboard complete with a human operator ... or a strowager or crossbar automatic exchange. Both supplied 50v DC standing voltage to make it all work. The telephone would use a transformer to combine / split incoming and outgoing sound and either a magnet and coil transmitter and receiver or magnet and coil receiver and carbon granule transmitter - In the exchange we'd often just tap on a standard receiver to perform both functions when testing. This technology was still dominant in 1972 but had almost vanished by the 80s. Lower voltages were used in intercom systems - but I never encountered "voice powered" systems - with low voltage DC the greatest problem is line resistance. The voltage output from an unpowered moving coil isn't going to travel far - I'd be surprised if, even using good quality thick copper wire you'd get a signal upstairs. And then of course - how do you alert the other person you want to speak to them? ...
Ooooo Bakelite. According to the contract number, it was made between Sept 1943 and January 1944 if it is in fact following the Navy's logic in assigning numbers.
Awesome.. Phones lines use (or used to use) 37 volts. I assume to ensure that signal can make it to a repeater which will amplify that signal then carry it on to the next ansd so on till it get to your house. Don't know if thats right or not.. but it seems to me such a system would work for short range communication .. you would still have to connect the two phones via a wire.
Here is a desk telephone just like the on in your video, has dialtone, makes calls, the original ringer sounds when a call comes in BUT it is wireless! A older bluetooth Desk telephone converted. Search " western electric bluetooth " , found on google and found on ebay.
old telephone microphones would power a speaker in the 1970s-they had carbon granules in the diaphragm, the amplifier circuit was by means of a battery in serie. no transistors needed...
People used to smoke pipes a lot and cigarettes so hardly surprising it is covered in brown gunk lol You probably let out some 81 year old germs lol The tape looks like bitumen tape tar based, remember in the 1930's they had no plastics so they used insulators based on oil products, ceramics, woven cloth etc. www.scapa.com/en/BitumenTape Back in 1978 I wired my parents house with speakers, one in each room so I could pipe music around the house it was a kids projects lol I had fun doing it, but then something weird happened one day with everything turned off I realized I could hear voices and stuck my head to the speaker 3 floors up and realized I could hear my dad downstairs shouting what I had done was inadvertently bugged my dad haha
Just wondering if you have ever seen a to show from the uk called secret life of machines. Made in the 80's and about as educational as possible. Plus tweedy boffins. It's on RUclips. They covered early microphones in phones episode. I think the original microphones where a wooden box full of carbon.
I googled Bakelite, and it looks like it was usually used with a filler - glass fibre, asbestos, or 'wood flour'. I assume it would have been too brittle if moulded without reinforcement. Lucky that you didn't find asbestos buried in there. Cool video.
Router convert sound into viration transmission through electronic power line to substation then into ham radio for long distance..your sound is crystal clear now Never say never
I know this kind of video,, it's the kind that do not eat away two days :-) I have one airing tomorrow, topic, completely different, but same kind of video :-) You really need your own place for all your stuff :-)
Rinoa Super-Genius I love my mom, but I would only move home in a extreme emergency, I only live 20 min city drive from her, and I come by every weekend, when I drive to MyPlayHouse. My younger brother still lives at home.
Where are the specific location of sound powered telephone in the engine room? How often this equipment needed to be tested on board and why? Please leave answer :) Thank you.
8:10 it's a coil moving in a magnetic field. You can literally wire it directly to a speaker and have it drive the speaker. You can use the metal ring as a cookie cutter for cutting out new gaskets. Throw down the locking ring and cut the gasket material with an x-acto knife. The surface could have been bakelite laquer. www.instructables.com/id/Restore-Bakelite-to-Original-Finish/ if the fibers are poking through, I'd avoid buffing it down more.
yeah, but its a low priority for me, thus is will be better to wait until i find another one at a yardsale than to seek it out. if you wait for something to come to you it will almost always be much cheaper, seeking it out costs more.
well it depends on how far and on what surface. they can take quite a beating as long as they fall on a flat surface not like asphalt. i've found good reliability with the iphoe 5c. and thanks ^^
XD That could be such a good prank to play on people, make them scream into the intake while filling a tank and when releasing the air from the tank, an hidden micro plays back the scream ^^
No, carbon was the original design that was adapted for widespread use. A.G. Bell used several different methods, but found carbon was the best, but it couldn't be used well in handsets until they perfected a way to keep the granules from shifting. (that's why early phones had separate transmitters and receivers)
Yes.. a microphone and a speaker.. same thing. LOL.. most people dont know that. YES! you took it apart.. I was so hoping you would. 6:44- Next I wanna see whats under that tape.. they didnt have really good electrical tape, it get super hard over time. You see.. you have a magnet, a coil, and wire.. thats all you need for a speaker and microphone - you can make your own telephone system.. easily.
Rinoa Super-Genius And now you see.. because it is possible - they have lied to us by the changes they have made over the years. A lot of old tech does Really work without the added electricity or government regulations attached to the new equipment. - you see, thats how they get you. Just like a crystal radio can power itself. - We are living in the Scam Age. I say we bring back some of this old tech and teach people Real science, and give this tech to them, to Free the people from the tyranny of those who seek to control us through regs and technology. Tesla would understand. I think you do also. I'll add that years ago they didn't have really good batteries or AC for small stuff - so they tried to design equipment in a way that powered itself. A very early form of our now called free energy movement we have today but instead of DC it was any other phenomena that created energy It was a common trend until the middle to end of WW!! - then they seduced us with other things they regulated like .house hold energy from atomic power plants. It's all related.
Rinoa Super-Genius Er.. How so? perhaps you didn't read my whole comment since I edited it.- or perhaps you misunderstand what I'm talking about.- I dont know how old you are but I'm like 50 ish. I have seen the prices of phones rise over the years by them adding new equipment, that' not called for.. this is before cell phones mind you. Still .. lots of folks have regular old fashioned phones.not cell phones.. different technology completely. What I'm saying is, over the years they added tech that was not necessary to make the system work, simply because it worked in a different way, and then with regulation, they could charge you more per month. this has been happening since the 1970's.. look it up.Of course the phone system we have today is totally different.. but still we can prove they were making extra bucks on us since the 60's. If you have some historical evidence that supports a claim of the opposite, I welcome the information, I have yet to find it. I look forward to you stripping more relics down for investigation.. Thanks for replying to my comment. I'l edit this to say: Some folks would chalk this up to Inflation but No.. there is no inflation that would account for it. only greed.. by AT&T which was the Only company you could get a phone from.
Divergent Droid there is no such thing as free energy, or atleast it doesnt make any sense to expect it in our universe. and the US government is so inept at controlling people that consiracies of them holding us back are ridiculous. companies do hold progress far more. but its not like an illuminati thing as you seem to think.
My understanding about these navy sound power phones is that the armature and pin that goes to the diaphragm is very delicate. I was cringing watching you molest the mechanics like that!
I know this video is a few months old now and some have been answered, but figured I'd throw my 2 cents maybe confirm some of the questions you asked.
-USN does indeed stand for U.S. Navy.
-We do use these phones as standard communication equipment on Navy and Coast Guard ships even today.
-On my ship they're almost the exact same design (Hose-McCann branded though), except the speaker/mic units no longer unscrew. The handle to the cover threads are all one unit, to replace the speaker or mic you would unscrew the face covers like you did in the video and the unit pops out.
-You are correct the speaker and mic are the exact same and are interchangeable. Also the phones can be used with powered amplifiers to provide a boost in volume for long runs or noisy environments.
-As for the tape I'm not 100% but it may be EWARP (emergency water activate repair patch) which is a fiberglass cloth tape impregnated with water activated resin, it's usually used to repair pipes that have burst in a battle situation. There should be a push-to-talk momentary switch there that someone must have removed and covered the hole with the tape.
Hope that helps, cheers. =)
That really is the electrical equivalent of two cans and a string. Interesting. Thanks.
For the longest time i thought these are plotholes/scriptwriter oversights in submarine movies...
That's not dirt, it's old Navy ear wax. :)
I really enjoy your channel! Your curiosity about technology is amazing yet informative. Please continue to create videos such as this please. Your access to tech stores provides you with great opportunities to enlighten your subscribers to lesser known and forgotten technologies. It's freaking awesome!
I believe those were used with phone switching stations on ship where you had different switches for different areas such as bridge to engine room, Capt quarters, operations room, etc. Very cool piece of vintage gear. Coil acts as it's own pre amp.
yeah its pretty neat. :D
Someone else mentioned this, but just to reiterate - pretty sure that coil is the actual voice coil for the speaker, with the moving coil connected to the moving diaphragm by that pin that you pressed on. I'm certain that the pin is mobile, but the system may just be so stiff (to give a high resonant frequency as to maintain sensitivity in the midrange frequencies) that it didn't move noticeably when you pressed on it. It's really unusual in its design, however, as the movement of the voice coil is actually perpendicular to the movement of the diaphragm, working against that peculiar horseshoe shaped magnet. Tear apart any other more contemporary speaker or microphone and the coil is attached directly onto the diaphragm via a rigid former, moving in a circular gap inside a puck shaped magnet. Have never seen anything quite like that before. Thanks for tearing this one down!
Our ship uses 3 methods of communication, we have a vacuum tube PA system and then if that fails we still use these same sound powered phones which still work fine even today. and if all of that were to get shot up we still have brass speak tubes, which is basically yelling through a long pipe to different compartments, but it works.
Thoroughly enjoyed your reaction as you took the phone apart. Your curiosity is refreshing. New Subscriber.
+handigurl thanks
Pretty cool I see this came out a while ago so it may been mentioned. The housings may be made of early type plastic alloy. Not sure if it would be considered bakelite or phenolic alloys instead of plastic. Either way what I think is happening is the solvents are reacting to air at the surface. Leaves a slightly damp appearance and in some cases a noticeable puddle. Happens to old snap-on plastic handled screwdrivers. I had an old one my box and noticed the fluid and crusting of the surface looked just like your covers you removed. The fluid smelled bad and assumed it was the solvents. Sometimes older things like that have a distinct smell especially if they're not moved or used a lot. Bakelite smells like burnt material sometimes. Noticed that when I was turning some old rod into pool cue ferrules. Magical stuff for the old ways cue purist but that stuff has a shelf life and no two batches were made the same. I'm not a 100% sure but it sure looks like you have that decaying look going on to me. The time period could be way off can't remember my timelines for their use completely cause they made so many different types.
I'm positive it's Bakelite or Phenolic Resin material now. It has the cloth pattern of the linen used in the making process. And if I had to guess I would say bakelite which was used in a lot of early electrical devices and "old style black phones" why it was stated liked that beats me had to check my facts when I saw linen pattern on the speaker cups.
Gotta tell you how I found this: I was looking at a 1952 issue of Popular Mechanics, and there was an ad in the back that advertised these as "government surplus". Not knowing electrical theory, I thought these HAD to be a scam. So I decided to research. And yours was the first video that popped up explaining this technology! :)
well thats cool :D
Thank you, and I fully support you!
i was going to make a Patreon joke but idk if thatd be rude. haha
I'm not familiar. Tell me how to do it and I'll consider it.
oh its just a website that lets you give like 1$ a month to your favorite creators, and you can get exclusive or early videos. so i do YouTUbe for a living now and cant rely just off the ad revenue, so any bit helps. i regularly upload a video on patreon and then only let everyone else see it a month later. however i feel strange bringing it up since i need to get off my ass and get some of my other projects going instead of asking people for funding. i recently got a printing press for free and am currently making space for it. i'm thinking i might start printing and selling my own pocket-guides someday to help fund my projects. ^^
or maybe i will finally just turn on ads for new videos. ya see for the past several years (since 2013 or so) its been a rule that i dont monetize a video until after most of my subscribers have seen it, so subscribers get to watch without ads. however i somewhat worry that might have damaged my channel a bit since YT doesnt like to promote videos that dont have ads. :/
Sound powered phones are essential during General Quarters during battle conditions and simulations. All communications of condition are communicated to Central Control of what type of fire or level of water flooding. Another everyday use is the intercom system where a Bosun's whistle is heard and announcements for smoking lamp is lit or put out, mail call,sweep down all stairways and passageways and etc.
This is used on all navel ships as standard communications between common stations, throughout the ship.
oh not just emergency? thats cool.
+Rinoa Super-Genius > FWIW, these things allow for communication throughout a ship, even if all electrical power is lost. Besides telephone-style handsets, there are also sound-powered headsets with microphones worn by watchstanders/crewmembers at various stations aboard ship....
Aren't they nicknamed "howlers"?
Polish Sausage "Growlers"
Pretty much. These were instituted pre-WW2. You had the intercomms like 1MC system which was powered, and the sound-powered system which was not externally powered. They replaced the older voice tubes of World War 1 (as the name implies, the old system were empty tubes through which you talked). All stations from gun mounts, radio, engineering, pilot house, etc had the sound powered system as a primary mode of communication to avoid loss of critical space comms during combat. You didn't want your CIC to be desynced from your gunners in combat by making them dependent on a vulnerable, externally powered intercomm. By 1939, all new ships like the revolutionary USS Sims used sound-powered phones as standard equipment, most US ships from WW1 had them installed, and every US sailor had been trained in them as standard comm and discipline. It was reputedly during this time that an old "hazing" ritual began, which is still used today: ordering newbie sailors to retrieve "sound-powered telephone batteries" (Sound-powered phones don't have batteries, of course, but the joke's on them until they figure that out).
This is definitely Navy, and I think you're right about the date code. After WWII, the Army and Navy shared contracts. Those items had "JAN" stamped on them for "Joint Army-Navy". I collect old vacuum tubes and see these stamps all the time.
interesting, i never knew about the JAN labeling.
Can't see how a modern phone will be in this condition 80 years from now... Built to last forever.
lithium battery will burst and corrode it from the inside out maybe. lol
thanks for sharing teardown. easy to understand how it works. heavy to handle, safe batteries with cutted sound. i like the spring in the wire, and the cone in the mic of the outside design.
You can use a speaker to act like a mic by yelling into it.
the cone acts like the diaphragm in your phone and as the driver coil moves up and down in the magnetic field it will generate a ac current that will drive another speaker.
when I was a kid we made wired walkie talkies like this
thank you for all the videos you recorded/uploaded in the last days :)
I hope you wash your hands after all the (old) dirt :D
Nice find & teardown. Thanks for sharing it.
You have no idea how long I've been looking for another one of those. They're like fabled golden phoenix feathers. I have a few and have figured out how to use them in a bunker style intercom setup. You just need a buzzer system and a disconnect switch in a receiver so you don't have all the handsets pulling down the transmission power. Their all off until you pick up any two. You just buzz the room you want to talk to, the person in it picks up, and you talk. This can be done with an old crank style dynamo system. Hold the button and turn the crank. Instant buzzer. You can also use the transducers in those as a direct intercom. All you need is an old victrola horn to amplify the sound on both ends. I have lots of hackables if you'd be willing to trade.
The inside U-shaped piece is exactly like an upstairs ringer for a really old doorbell we found when we moved into our home.
yup, naval shipboard coms. The growlers used the handsets, during general quarters and battle stations the headsets with breastplate mounted mics were used for hands free type operations.
Can I hook one of those up to my daughter so when she screams it can power my house?
+MrMetonicus maybe, but only a very small amount. haha
Neat find. Like others have mentioned that the "dirt" isn't dirt at all. Virtually all home phones would get this grime on them back in the day.
i dont believe it tbh, our phones never got dirty, maybe other people are really dirty though.
@@RinoaL lol
Since when are "dirt" and "grime" NOT the same thing?
Wow..😂.. Intresting..
Sound (Passive) powered telephone..
Thanks for the info..👍
Hi Rinoa. Another fascinating video. Thanks for producing great content. I was looking at similar vintage phones trying to find the exact one and no luck yet but I noticed that a lot of them had markings right about where the tape is on the handle.
yeh i mention that in the video, i like the tape though and it would ruin it to remove it.
My friend is in the navy training to be a nuclear propulsions officer. Those are the phones they use in the older and newer submarines and aircraft carriers. in the event of a power failure or technical difficulty communication can still be maintained in order to problem solve effectively. In order to get many people to recieve a voice signal however it does need amplification of somesort
im gonna pick up a few of these to play with for sure
We used to use sound powered telephones in the u.s. navy when I was in bk in the 90s. Would think and hope they still use em on board all navy ships in case power loss was to happen or major issues like fires etc.. and they needed communication with one another. Really is amazing some of the things that we used that is considered old technology and most people wouldn’t use em anymore or even know about em, but when push comes to shove things like this rarely fail during emergency situation. Always good to have em as a bk up still for communication would hope on all our ships still today. Not sure if they do still use em but their dumb if they don’t.
as far as i can tell they are still used
I always liked the hold hand sets, the kind so robust, it outlasts everything it was related to.
it's a military field telephone. you run wire behind your crawling scouts, and they can call fire onto whatever "them" you feel a need to drop shells and bombs on. the whole set came with a hand crank dynamo rig, which rang the phone at the other end when cranked. the usn marking means it's probably marine corp issue. watch an old WW2 flick and you can see them in use 9 times out of 10. used them until the 70s, i think
this one was most likely on a ship, and no i havent found any models that look exactly like it yet. that was a good guess though.
addendum: www.bunkerofdoom.com/mil/telephone/milphones1.html
quick history, and some wiring/set-up ideas
ludditeneaderthal
those dont look like this phone. plus this was probably for stationary use.
It's standard telephony kit. In the old days there were two "technologies" available. Standard landlines were connected to a telephone exchange which (in the UK, which is what I know) was in turn either connected to a manual switchboard complete with a human operator ... or a strowager or crossbar automatic exchange. Both supplied 50v DC standing voltage to make it all work.
The telephone would use a transformer to combine / split incoming and outgoing sound and either a magnet and coil transmitter and receiver or magnet and coil receiver and carbon granule transmitter - In the exchange we'd often just tap on a standard receiver to perform both functions when testing.
This technology was still dominant in 1972 but had almost vanished by the 80s.
Lower voltages were used in intercom systems - but I never encountered "voice powered" systems - with low voltage DC the greatest problem is line resistance. The voltage output from an unpowered moving coil isn't going to travel far - I'd be surprised if, even using good quality thick copper wire you'd get a signal upstairs. And then of course - how do you alert the other person you want to speak to them? ...
Ooooo Bakelite. According to the contract number, it was made between Sept 1943 and January 1944 if it is in fact following the Navy's logic in assigning numbers.
IIRC you are supposed to be able to use the earpiece as the microphone.
Awesome.. Phones lines use (or used to use) 37 volts. I assume to ensure that signal can make it to a repeater which will amplify that signal then carry it on to the next ansd so on till it get to your house. Don't know if thats right or not.. but it seems to me such a system would work for short range communication .. you would still have to connect the two phones via a wire.
Here is a desk telephone just like the on in your video, has dialtone,
makes calls, the original ringer sounds when a call comes in BUT it is
wireless! A older bluetooth Desk telephone converted. Search " western
electric bluetooth " , found on google and found on ebay.
old telephone microphones would power a speaker in the 1970s-they had carbon granules in the diaphragm, the amplifier circuit was by means of a battery in serie. no transistors needed...
guess the speaker holes are different sizes because they were hand drilled "back in the day"?
on the handset telephones from the 70's, the microphone end had smaller holes, and the earpiece had larger holes for more sound.
People used to smoke pipes a lot and cigarettes so hardly surprising it is covered in brown gunk lol You probably let out some 81 year old germs lol
The tape looks like bitumen tape tar based, remember in the 1930's they had no plastics so they used insulators based on oil products, ceramics, woven cloth etc.
www.scapa.com/en/BitumenTape
Back in 1978 I wired my parents house with speakers, one in each room so I could pipe music around the house it was a kids projects lol I had fun doing it, but then something weird happened one day with everything turned off I realized I could hear voices and stuck my head to the speaker 3 floors up and realized I could hear my dad downstairs shouting what I had done was inadvertently bugged my dad haha
ya know i think i have a roll of that tape from the tools i inherited from my great grandfather, although its solid as a rock now. lol
You might be able to re-invigorate it with soaking in some tar or liked bittumin, or best leave alone lol
I'm pretty sure that fiberglass material is phenolic (bakelite reinforced with fiber).
en.wikipedia.org/wiki/Phenolic_paper
Trace that contract number (CN) with the DOD/Navy and that will give you the specific year that unit was ordered.
This is news to me - not being an ex seafarer; Very cool tech I'd never heard of before this vid
that is a common navy radio handset.you may find a collector who wants it..
thats fucking neat. interesting video as always
Since they are the same. You could make a nice intercom system.
Just wondering if you have ever seen a to show from the uk called secret life of machines. Made in the 80's and about as educational as possible. Plus tweedy boffins. It's on RUclips. They covered early microphones in phones episode. I think the original microphones where a wooden box full of carbon.
Hey thanks for the suggestions. I will be checking those shows out.
sam henderson she has watched the show. I watched all the episodes because she has mentioned the show in the past
I googled Bakelite, and it looks like it was usually used with a filler - glass fibre, asbestos, or 'wood flour'. I assume it would have been too brittle if moulded without reinforcement. Lucky that you didn't find asbestos buried in there. Cool video.
How do you know that's not asbestos?
Router convert sound into viration transmission through electronic power line to substation then into ham radio for long distance..your sound is crystal clear now
Never say never
I REALLY like the sound of it
I know this kind of video,, it's the kind that do not eat away two days :-) I have one airing tomorrow, topic, completely different, but same kind of video :-)
You really need your own place for all your stuff :-)
yeah i want to get a place just for my projects. so i can seperate work from personal stuff.
Rinoa Super-Genius or just your own place for you and your stuff :-) I just aired the video for tomorrow by accident,, that sucks :-/
My PlayHouse
yeh i guess. id like to live with my mom again though.
Rinoa Super-Genius
I love my mom, but I would only move home in a extreme emergency, I only live 20 min city drive from her, and I come by every weekend, when I drive to MyPlayHouse. My younger brother still lives at home.
The tape around the handset looks like self amalgamating rubber tape.
It is USN. The "dirt" is years and years of skin oil, sweat, skin cells, and dirt.
i doubt its just "dirt" given how tough it was, i think it was deteriorating coating.
It has to have same resistance to transfer maximum power. If not there woud be impedance maching transformer.
I would think it would be used on subs to conserve the battery of the sub (WWII).
The material may be Micarta.
The tape is 'Self-amalgamating tape'
nice
Where are the specific location of sound powered telephone in the engine room?
How often this equipment needed to be tested on board and why?
Please leave answer :) Thank you.
learn to not waste your time asking pointless questions to people who wouldnt know. if you need to know, go ask google
I couldn't see the answer in google.
8:10 it's a coil moving in a magnetic field. You can literally wire it directly to a speaker and have it drive the speaker.
You can use the metal ring as a cookie cutter for cutting out new gaskets. Throw down the locking ring and cut the gasket material with an x-acto knife.
The surface could have been bakelite laquer. www.instructables.com/id/Restore-Bakelite-to-Original-Finish/
if the fibers are poking through, I'd avoid buffing it down more.
cool
Hey Rino super genuine's I bet you might be able too find another one of those phones on eBay
yeah, but its a low priority for me, thus is will be better to wait until i find another one at a yardsale than to seek it out. if you wait for something to come to you it will almost always be much cheaper, seeking it out costs more.
thank you for sharing
no problem, stuff like this is pretty easy to film. not much setup or planning involved.
Drop an iPhone and it's ruined but you could beat someone to death with this thing and still dial Pennsylvania 6-5000. ;) Dig yer work!
well it depends on how far and on what surface. they can take quite a beating as long as they fall on a flat surface not like asphalt. i've found good reliability with the iphoe 5c. and thanks ^^
+DronesoundTV Nice Glenn Miller reference
Anime avatar? Yeah, I'm good, thanks.
Yea +Rhinosupergenius you might be-able too find another one of those vintage 1935 phones on eBay
its Rinoa, not Rino nor Rhino, just fyi.
wow wow wow ... so Dune's voice weapon is real?
3:10 that's human slime
And rotting fibre washers? :P
Yup. Same stuff that builds up on old keyboards and under mice. Skin and oil.
Fracture Blood, flesh, brains... :P
That is Awsome
I use two 300ohm impedance telephone capsules from handsets... and made it.... can talking with two wires, without battery, electronics...
Very interesting !
So potentially you could wire this to a bunch of LED and yell in case of emergency to have light xD
It would be like scream power from Monsters Inc.
Yeah !! That's such a good reference !
(But in Monster Inc. the power was like a pressurised scream in a tank wasn't it ?)
just scream into the intake side of an air compresor
XD That could be such a good prank to play on people, make them scream into the intake while filling a tank and when releasing the air from the tank, an hidden micro plays back the scream ^^
do it!
The Navy still uses these today!
these are used on boats and subs mainly
- navy
That's Hockey Stick Tape^!!^
Do you know about the Slinky?
I could tell you but then...you know;^D
Sincerely,
Not so standard issues
I believe that is whats known as a balanced armature driver. also, first.
oh interesting, and no your far too late to be first. the comment section of this video has already started populating. :P
must have been between opening the video and typing the comment.
can you connect it into a guitar amp? it would sound awesome!
sure i guess you could.
Looks like a WW2 phone. Watch Saving Private Ryan. Looks like the same phone.
actually its pre-ww2. most likely used for WW2 though.
could USN stand for US Navy?
+chrisrobins7 yes, im pretty sure i mention that in the viideo
the u.s. Navy use them on board ship for communication
This must pre-date the carbon granular type.
No, carbon was the original design that was adapted for widespread use. A.G. Bell used several different methods, but found carbon was the best, but it couldn't be used well in handsets until they perfected a way to keep the granules from shifting. (that's why early phones had separate transmitters and receivers)
Still has better sound reproduction than today's digital mobile phone garbage
Yes.. a microphone and a speaker.. same thing. LOL.. most people dont know that. YES! you took it apart.. I was so hoping you would. 6:44- Next I wanna see whats under that tape.. they didnt have really good electrical tape, it get super hard over time. You see.. you have a magnet, a coil, and wire.. thats all you need for a speaker and microphone - you can make your own telephone system.. easily.
its normally not the same thing though. thats why i found it interesting.
Rinoa Super-Genius And now you see.. because it is possible - they have lied to us by the changes they have made over the years. A lot of old tech does Really work without the added electricity or government regulations attached to the new equipment. - you see, thats how they get you. Just like a crystal radio can power itself. - We are living in the Scam Age. I say we bring back some of this old tech and teach people Real science, and give this tech to them, to Free the people from the tyranny of those who seek to control us through regs and technology. Tesla would understand. I think you do also. I'll add that years ago they didn't have really good batteries or AC for small stuff - so they tried to design equipment in a way that powered itself. A very early form of our now called free energy movement we have today but instead of DC it was any other phenomena that created energy It was a common trend until the middle to end of WW!! - then they seduced us with other things they regulated like .house hold energy from atomic power plants. It's all related.
Divergent Droid
no i think you sound a bit paranoid tbh
Rinoa Super-Genius Er.. How so? perhaps you didn't read my whole comment since I edited it.- or perhaps you misunderstand what I'm talking about.- I dont know how old you are but I'm like 50 ish. I have seen the prices of phones rise over the years by them adding new equipment, that' not called for.. this is before cell phones mind you. Still .. lots of folks have regular old fashioned phones.not cell phones.. different technology completely. What I'm saying is, over the years they added tech that was not necessary to make the system work, simply because it worked in a different way, and then with regulation, they could charge you more per month. this has been happening since the 1970's.. look it up.Of course the phone system we have today is totally different.. but still we can prove they were making extra bucks on us since the 60's. If you have some historical evidence that supports a claim of the opposite, I welcome the information, I have yet to find it. I look forward to you stripping more relics down for investigation.. Thanks for replying to my comment. I'l edit this to say: Some folks would chalk this up to Inflation but No.. there is no inflation that would account for it. only greed.. by AT&T which was the Only company you could get a phone from.
Divergent Droid
there is no such thing as free energy, or atleast it doesnt make any sense to expect it in our universe. and the US government is so inept at controlling people that consiracies of them holding us back are ridiculous. companies do hold progress far more. but its not like an illuminati thing as you seem to think.
way cool
is that's the new Samsung galaxy???
I hear what your saying on name pronunciation for your RUclips name rinoa
I could run my airco on it when my neighbours are at home...
My understanding about these navy sound power phones is that the armature and pin that goes to the diaphragm is very delicate. I was cringing watching you molest the mechanics like that!
its not dirt its dead skin
looks like it was from 1930s 40s
well its from 1935....lol
Is that person a boy or a girl?
girl
+Lara Beckmann lol.... nope it's a guy
both
she is trans get over it, she is a girl :P
+Lara Beckmann how bout you get over it lmao.... fucking looser
First!
good job!
No you were second.
sounds like a girl at first, the wonders of quality
+destrierofdark ?
Basically, with the low audio clarity of the phone at the beginning, it sounds like a girl is talking.
first
more like 4th :P
No more solar Sunday why?
Juan Paolo DIY!
because im across the country from my equipment. thats why.
Rinoa Super-Genius I think your in California? You should buy new charge controller if go back