We got a lot of emails about visits over the christmas break, so we decided to open up half way through the rearrange, dont worry, still plenty to see and do. the dates are December 29th and 30th information here :- this-museum-is-not-obsolete.com/
Hey yeah cheers! I must admit I was being a bit complacent at the time. Next time I open it or it eventually breaks ha I’ll do it the proper way. But the bodge job gene in my family runs deep so that may be a while! 😂
@@THISMUSEUMISNOTOBSOLETE On top of all the other stuff, you seeing this man’s comment, taking it to heart, and replying is inexplicably pleasing to me. You make misanthropy impossible 👍
"We're so sorry, Uncle Albert But we haven't done a bloody thing all day We're so sorry, Uncle Albert But the kettle's on the boil and we're so easily called away"
And i suppose you think that's funny ??? ... BLOODY BRILLIANT MATE !!!...lol ... It's a beautiful track full of "sounds" from that era !!! ... Great channel this !!! .. Way back when i was 5 years old.... i knew how a transistor worked !!! . And the teacher just thought i was dull and stuck me on the "rems" table !!! ... Cheers buddy.... GREAT COMMENT !!!
nice im gunna get me some of those for other projects. the ringer machine on the exchange has a 50 pin jones connector, or something crazy like that. getting it off is like parting the red sea
From a recording perspective maybe you could run a synth through it, use it as a "filter" of some sorts. You could mic it up and mix it with a dry signal to add distortion and color your sound
I noticed that when you were trying to put the handset hanger/hook in -- when the case was assembled, you had it upside-down -- otherwise it might have worked without having to open the case back up. *BUT* amazing work -- and I actually do like the idea of it in the bathroom of your museum!!!
Ok. I thought I had decent vibrato on my whistling, but I think I should quit whilst I'm ahead hehe. Well played on the last of the summer wine theme Sam :D
@@LOOKMUMNOCOMPUTER Did you also try an external 7806 (or 317, or similar) regulator? I'd be surprised if it buzzed when running on one of those. If it does still buzz, I would suggest trying to add somewhere around a 47 ohm 2 watt resistor in parallel with the phone. It will either help or do nothing, I'm not really sure.
What an interesting piece of old tech - now we treat speakerphone as standard, but it wasn't like this all the time! I remember the pulse-dialed PSTN in the '90s. Then Poland switched over to DTMF dialing, rendering most old telephones useless.
I'm glad you got it working I should say, it sounds really good! (Should clarify, I mean this, it sounds epic like it an old call of duty phone) l Especially love those thicc traces!
Brilliant! Soooo very much reminds me of Pink Floyd / Month Python / a James Bond movie 🤣🤣🤣 - don't know if you get that all the time. Sorry If you do. Can't help but say that it seems like a quintessentially English telephone. Of course all the dial tones and everything are different than the States as well. That chunky circuit board is just beautiful. It seems like almost a Heath Robinson contraption of a telephone. I wonder if the fidelity was ever that great on these devices , even when they were first out of the factory ?
Despite your restless storytelling which upsets me after a while, I highly respect your problem solving skills, again you saved another device from being obsolete! Good luck with the Formant, I built one in the seventies. I forever regret parting from it.
I am a huge Germanium fan. Not for just the transistors. But moreso the optical properties for uncooled thermal infrared imaging systems. Just before this video I had a Period Videos video in my watch later. And I was thinking about writing a letter to the Professor with a sample of a lens I broke as well as some copies of my zine (which hasn't been printed yet).
I reckon that the microphone is probably some type of electret capsule - as these are basically variable capacitors, it's likely to be reading much lower than it's supposed to and so it's feeding back a lot of high pass. It might be worth seeing what happens if you add a bias capacitor to the mic circuit and see if it improves.
Check your phone line resistance to ground. It should be at least 18 Meg. The line is balanced between the 2 conductors. Each conductor should be the same very high resistance to ground or you will pick up power line frequency and other noise. My home phone has hum when it rains because of 40 year old AT&T insulation allows water lower that high resistance. This applies to all phone lines in you network (the fault may be in either phone line).
when ever I hear the the "Bruuuut! Bruuuut!.....Bruuuut! Bruuuut!.....Bruuuut! Bruuuut!" sound that indicates that the person's whom you are callings phone is ringing in England's Telephone system the opening of the Pink Floyd song-wish you were here, comes to mind 😀
yeah i think the GET113. i think. the code is under the mount that holds the transistor in place but i did research it before and i think im gunna stand by GEC GET113, i dont want to remove it again to look ha, it was a pain to put back in!
does it have a bridge rectifier, (diode arrangement)? the AC input voltage after the bridge rectifier is 1.4 bigger. 18 Volt ac become 25,2 Volt dc. to step down again to 15 or 12 Volt you burn a lot of power, converted into heat. be careful, 15 Volt AC become 21 volt. 12 Volt ac becomes 16,8 volt dc. the most important factor is home many amps / watts it can deliver. ring / toroid shaped. rectifying 220 volt ac becomes 308 volt dc. What kind of regulator are there on board?
It actually sounded better when you were talking quietly compared to when you were shouting. The shouting sounded like it was clipping, so it was definitely made for quieter speech. The only problem is the buzzing.
I'll never complain about old phone content. Then again, I have a small collection of old Western Electric / Bell System phones so I'm not the average viewer.
it is very very thickly lacquered the look may be down to that, but yeah im not a wood person, i cant tell the difference between mdf and oak, so dont listen to me ha
it would be but they cost a bomb! i am always on the hunt for a bargain. this phone for instance was a carboot find and cheap as chips. so hopefully a phone booth turns up
If you wanna do this high end, just buy 2 toroidal transformers, one 2 x 12 volt AC ( depending on your voltage regulators) and 2 x 6 Volt AC. 3d print 4 conus shaped rings with a hole to pass a 5/6 mm thread rod, stack the 2 toroidal transformers separated by a metal plate, so their fields don't ... what's the voltage regulator rating, 500 mA? use a online VA to amp converter ( VA to Amps Calculator) to find the right transformer, one size more than your voltage regulators. You have to match their phase as well. a 2 channel oscilloscope ... maybe the color of the wire of the transformer's will help. remove the comment.
We got a lot of emails about visits over the christmas break, so we decided to open up half way through the rearrange, dont worry, still plenty to see and do. the dates are December 29th and 30th information here :- this-museum-is-not-obsolete.com/
It's 2021 and this thing is clearer than a modern office speakerphone.
Solder-blob is a poor way to fix broken tracks - easily cracks again. Solder a short length of bare wire along the track
Hey yeah cheers! I must admit I was being a bit complacent at the time. Next time I open it or it eventually breaks ha I’ll do it the proper way. But the bodge job gene in my family runs deep so that may be a while! 😂
it played on my conscience all day and I did it again just to let you know haha
@@THISMUSEUMISNOTOBSOLETE On top of all the other stuff, you seeing this man’s comment, taking it to heart, and replying is inexplicably pleasing to me. You make misanthropy impossible 👍
"We're so sorry, Uncle Albert
But we haven't done a bloody thing all day
We're so sorry, Uncle Albert
But the kettle's on the boil and we're so easily called away"
And i suppose you think that's funny ???
...
BLOODY BRILLIANT MATE !!!...lol
...
It's a beautiful track full of "sounds" from that era !!!
...
Great channel this !!!
..
Way back when i was 5 years old.... i knew how a transistor worked !!!
.
And the teacher just thought i was dull and stuck me on the "rems" table !!!
...
Cheers buddy.... GREAT COMMENT !!!
Lovely :) that "Junction" connector is called a "Jones" connector :)
junction jones
nice im gunna get me some of those for other projects. the ringer machine on the exchange has a 50 pin jones connector, or something crazy like that. getting it off is like parting the red sea
Your phreaking skills are off the charts. I miss the days of analog exchanges.
Speakerphone from 1959! And it's in stereo!! Wow!!
From a recording perspective maybe you could run a synth through it, use it as a "filter" of some sorts. You could mic it up and mix it with a dry signal to add distortion and color your sound
I noticed that when you were trying to put the handset hanger/hook in -- when the case was assembled, you had it upside-down -- otherwise it might have worked without having to open the case back up. *BUT* amazing work -- and I actually do like the idea of it in the bathroom of your museum!!!
I was keeping up until the -6v, but didn't stop my enjoyment. Love these videos!
I love these restoration and repair videos, keep them coming!
Ok. I thought I had decent vibrato on my whistling, but I think I should quit whilst I'm ahead hehe. Well played on the last of the summer wine theme Sam :D
Have you tried it with a linear 6V supply or a battery? I would be suspect the hum could be noise from the wall wart.
Yeah tried with numerous types of power supplies. Not a battery tho will give it a go.
@@LOOKMUMNOCOMPUTER Did you also try an external 7806 (or 317, or similar) regulator? I'd be surprised if it buzzed when running on one of those. If it does still buzz, I would suggest trying to add somewhere around a 47 ohm 2 watt resistor in parallel with the phone. It will either help or do nothing, I'm not really sure.
@@eDoc2020 I tried a lot of things
@@LOOKMUMNOCOMPUTER i have one the same ( with original junction box )i tried a 6v battery and the hum disappeared
What an interesting piece of old tech - now we treat speakerphone as standard, but it wasn't like this all the time! I remember the pulse-dialed PSTN in the '90s. Then Poland switched over to DTMF dialing, rendering most old telephones useless.
I'm glad you got it working I should say, it sounds really good! (Should clarify, I mean this, it sounds epic like it an old call of duty phone) l Especially love those thicc traces!
they are chunky arent they! but as per the video they still crack hahaha. seems there is no trace to thicccc!
Brilliant! Soooo very much reminds me of Pink Floyd / Month Python / a James Bond movie 🤣🤣🤣 - don't know if you get that all the time. Sorry If you do. Can't help but say that it seems like a quintessentially English telephone. Of course all the dial tones and everything are different than the States as well. That chunky circuit board is just beautiful. It seems like almost a Heath Robinson contraption of a telephone. I wonder if the fidelity was ever that great on these devices , even when they were first out of the factory ?
Despite your restless storytelling which upsets me after a while, I highly respect your problem solving skills, again you saved another device from being obsolete!
Good luck with the Formant, I built one in the seventies. I forever regret parting from it.
What’s wrong with story telling? As for formant yes I’ll be on it 👍
@@LOOKMUMNOCOMPUTER I know, I need to relax more, haha!
So when the clock is ticking down, do you cut the red or the blue wire?
Nice explanation of historic telephonic equipment!
I am a huge Germanium fan. Not for just the transistors. But moreso the optical properties for uncooled thermal infrared imaging systems. Just before this video I had a Period Videos video in my watch later. And I was thinking about writing a letter to the Professor with a sample of a lens I broke as well as some copies of my zine (which hasn't been printed yet).
Keep the hum! It's proper retro!
I reckon that the microphone is probably some type of electret capsule - as these are basically variable capacitors, it's likely to be reading much lower than it's supposed to and so it's feeding back a lot of high pass. It might be worth seeing what happens if you add a bias capacitor to the mic circuit and see if it improves.
To fix the hum try battery as these an earth loop.
I would but it’s fine. A battery would need constant checking. But yeah it would be less noisy
I may just try. Maybe will wire it into a battery and a charger ooohf
Check your phone line resistance to ground. It should be at least 18 Meg. The line is balanced between the 2 conductors. Each conductor should be the same very high resistance to ground or you will pick up power line frequency and other noise. My home phone has hum when it rains because of 40 year old AT&T insulation allows water lower that high resistance. This applies to all phone lines in you network (the fault may be in either phone line).
Nice job!
when ever I hear the the "Bruuuut! Bruuuut!.....Bruuuut! Bruuuut!.....Bruuuut! Bruuuut!" sound that indicates that the person's whom you are callings phone is ringing in England's Telephone system
the opening of the Pink Floyd song-wish you were here, comes to mind 😀
21.19 Last OF The Summer Wine 🤣
Such an odd bird.
I love it.
Oooh a formant, good luck on finding the µA426 for the oscillators :P.
Thanks for another very entertaining video.
Was that techmoan's voice around 19:10?
@12:42 what was that transistor?
Can’t remember could find the name of it and you can’t read em unless you remove em. Something like Gec 113 or something
yeah i think the GET113. i think. the code is under the mount that holds the transistor in place but i did research it before and i think im gunna stand by GEC GET113, i dont want to remove it again to look ha, it was a pain to put back in!
does it have a bridge rectifier, (diode arrangement)?
the AC input voltage after the bridge rectifier is 1.4 bigger.
18 Volt ac become 25,2 Volt dc. to step down again to 15 or 12 Volt you burn a lot of power, converted into heat.
be careful, 15 Volt AC become 21 volt. 12 Volt ac becomes 16,8 volt dc.
the most important factor is home many amps / watts it can deliver. ring / toroid shaped.
rectifying 220 volt ac becomes 308 volt dc.
What kind of regulator are there on board?
ideally you would put a small 5 Volt ac transformer alongside to make 5 Volt dc.
Nice whistling! You ought to sample some of that whistling . . . .
Never look away!!!!!!!!!!!!!!!!!!!!!!!!!!! 3:09
It actually sounded better when you were talking quietly compared to when you were shouting. The shouting sounded like it was clipping, so it was definitely made for quieter speech. The only problem is the buzzing.
Only channel I don’t play at 2x 😃
might make an interesting lo fi vocoder if you could get a synth to talk to it?
I couldn't help but whistle "Where's my money" by TC, so it must have turned out just fine.
fabulous
I'll never complain about old phone content. Then again, I have a small collection of old Western Electric / Bell System phones so I'm not the average viewer.
6:54
Sing the days of Pearly Spencer through it 😂
Oh yes my Kosmo synth is definitely a slow burner project :D
The Very last Fudging on the video, sounds much more like your intended word :-) 24:19
uhohhhhhhh
@@THISMUSEUMISNOTOBSOLETE Ha Ha, sorry, I can't un hear it :-)
The wooden case looks like walnut veneer (or it pretends to be by it’s colour).
it is very very thickly lacquered the look may be down to that, but yeah im not a wood person, i cant tell the difference between mdf and oak, so dont listen to me ha
I have the same one i got it working now
19:10 is that Techmoan`s (ruclips.net/user/Techmoan) voice? ;)
It is ! There is a video about it: ruclips.net/video/qvzH7DSsD3g/видео.html
Sam! You need a phone box for it!
Haha pricey things!
12:16 Glued, screwed and tattooed.
If you need a quiet place to put this a 1950’s phone box would be excellent!
it would be but they cost a bomb! i am always on the hunt for a bargain. this phone for instance was a carboot find and cheap as chips. so hopefully a phone booth turns up
watson get your thingamajiggy in here
If you wanna do this high end, just buy 2 toroidal transformers, one 2 x 12 volt AC ( depending on your voltage regulators) and 2 x 6 Volt AC.
3d print 4 conus shaped rings with a hole to pass a 5/6 mm thread rod, stack the 2 toroidal transformers separated by a metal plate, so their fields don't ...
what's the voltage regulator rating, 500 mA?
use a online VA to amp converter ( VA to Amps Calculator) to find the right transformer, one size more than your voltage regulators.
You have to match their phase as well. a 2 channel oscilloscope ... maybe the color of the wire of the transformer's will help.
remove the comment.
if you really wanna go over the top, 3d print a box where the transformers sit in.
: )