I was just surfing RUclips a few years ago and found this video! I now own about 20 ARC/SCR’s plus a gaggle of other surplus radios. An old ham from 1984 I let my ticket laps but am now getting back into it. My dad was KT3O in the 70/80’s had ALS was bed ridden and could only communicate via morse code. Thank you!!
This brings back so many wonderful memories of growing up in the '50s. I imagine they still have that same warm aroma they used to have. There is nothing like the smell of a shack filled with glowing tube gear! Thank you for taking the time to share your knowledge via your videos. 73 -- de Mick, WB4LSS
Back in the early 70's a friend and I found an Army/Navy Surplus store with a lot of TCS-3 Navy Receivers (3-12mhz??). We bought them all for $5 each. Designed to run off 220v, we used upside down aluminum bake pans to build 110v power supplies. Except for one with a bad BFO, every one worked. Sold them for $30 each to anyone who wanted one.... still a bargain. ARC-5s were common and I've owned a couple, but my first real receiver was an SX-28 Skyrider.
Mike, Thanks for the great video. I just picked up the BC-453, 454, and 455, along with one home brew power supply. It was from a living estate sale here in VT. You might know the guy: K1MVP. All three work great. I have not removed the covers yet but judging from the great work he did on his BC-348, he probably replaced all the caps and aligned them. The frequency is dead on and no drifting! Hope to see you at NEAR-Fest in October. I saw you walk by my table in the spring but could not figure out why you looked familiar. Then I saw you on Burt's video. 73 Paul AA1SU
I did make a mistake saying that in the ARC-5, the 12SF7 replaces the 12SR7. Actually the 12SR7 detector BFO remains; the 12SF7 replaces the second IF tube which is a 12SK7 in the AN/SCR-274's. If you accidently plug a 12SK7 into the 12SF7 socket in an ARC-5 - No Audio...
Fair radio LIma. Ohio Used to see many. Used to be on east eureka LIma. Now down at the old wollhan lumber yard on what I think is fourth St. South LIma. dyna motor had a 400 cps output. Kv4li
i first got hooked in electronics and eventually into amateur radio when i stumbled upon my Dad's Old college text books and most specially his old 1949 issue of the arrl radio amateurs hand book. igave up reading Marvel Comic books after that. I was 9 years old at the time !!!
Whoops, It is actually the 40M transmitter. It has the top and when opened it has the green felt underneath. It is pristine. I will have to review your transmitter videos.
It looks to me like the undercarriage wiring has had some type of sealant applied to it, it looks glossy, judging by the still image at ~ 3:36. I have a unit, probably a similar model, incomplete, or missing the dial in front but having a few parts loose inside. But the wiring and components inside, HOW INCREDIBLY IMMACULATE! On mine, somebody really went to town and tied a thread around the insulation every 1 or 2 cm or so, across every inch of wiring, and I can see the little red splotches of paint, or wax, whatever it is, I'm guessing to indicate where there may be any modifications to original work? I really am getting into these videos, suddenly, result of my curiosities regarding this funny green 'Dynamotor'/'Interphone Amplifier' box radio gadget from 1943 my friend gave to me (I'm not a radio enthusiast- I'm a musician). Thanks for your knowledge and for sharing, awesome stuff!
Yes some kind of goop or protectant and they likely needed it! The components would be susceptible to water and perhaps as the life of the radio was extended and it was used for ground service, they added it. This kind of jungleproofing was done to most US sets by wars end.
Can you tell me what pins 6,7 on the fron panel are for? They are marked LV on the schematic... and one guy says a shunt needs to be conected between them But I can't fugure out what for. Thanks for whatever you can tell me!
Great Question! V1 and V2 are neon lamp bulb limiters. They protect the receiver's components like fine transformer wire and capacitors from being damaged - and of course the operators ears!, When a sudden burst of static, lightning or radio frequency signals as with a strong transmitter, or when local arcing suddenly appears, (or EMP) they flash! This CLAMPS or LIMITS the voltage to less than 70 V peak. Yes they flash orange when this happens.
Thanks for the info! Makes sense. I’ve bought a bc-454 on eBay and am preparing to get it I working condition. I had one many years ago as a teenager...
AF, most chargers nowadays are using not only higher voltage, but pulse techniques, so be careful. Some older types might work to drive a dynamotor or I suppose you could add regulation.
Развлечения
I was just surfing RUclips a few years ago and found this video! I now own about 20 ARC/SCR’s plus a gaggle of other surplus radios. An old ham from 1984 I let my ticket laps but am now getting back into it. My dad was KT3O in the 70/80’s had ALS was bed ridden and could only communicate via morse code. Thank you!!
Surfing the RUclips world and you found something familiar!
just found these videos.love them..thanks for making them.lots of great info..
This brings back so many wonderful memories of growing up in the '50s. I imagine they still have that same warm aroma they used to have. There is nothing like the smell of a shack filled with glowing tube gear!
Thank you for taking the time to share your knowledge via your videos.
73 -- de Mick, WB4LSS
Ah the faint smell of oil and cosmolene wafting through the shack.
TYVM THIS VIDEO AND MOST OF UR OTHER VIDEOS ARE VERY TOUCHING BRINGS NOSTALGIA AND VERY GOOD MEMORIES
It is hard to recreate the excitement as a young person with a first radio transmitter and receiver.
Thank you for taking the time to share your knowledge via your videos.
Thanks for watching my memories of a childhood surrounded by radio nuts who inspired me to build and play radio.
I just got one of these. Great video! tnx
Back in the early 70's a friend and I found an Army/Navy Surplus store with a lot of TCS-3 Navy Receivers (3-12mhz??). We bought them all for $5 each. Designed to run off 220v, we used upside down aluminum bake pans to build 110v power supplies. Except for one with a bad BFO, every one worked. Sold them for $30 each to anyone who wanted one.... still a bargain. ARC-5s were common and I've owned a couple, but my first real receiver was an SX-28 Skyrider.
Mike, Thanks for the great video. I just picked up the BC-453, 454, and 455, along with one home brew power supply. It was from a living estate sale here in VT. You might know the guy: K1MVP. All three work great. I have not removed the covers yet but judging from the great work he did on his BC-348, he probably replaced all the caps and aligned them. The frequency is dead on and no drifting! Hope to see you at NEAR-Fest in October. I saw you walk by my table in the spring but could not figure out why you looked familiar. Then I saw you on Burt's video.
73 Paul AA1SU
I did make a mistake saying that in the ARC-5, the 12SF7 replaces the 12SR7. Actually the 12SR7 detector BFO remains; the 12SF7 replaces the second IF tube which is a 12SK7 in the AN/SCR-274's. If you accidently plug a 12SK7 into the 12SF7 socket in an ARC-5 - No Audio...
Fair radio LIma. Ohio
Used to see many. Used to be on east eureka LIma. Now down at the old wollhan lumber yard on what I think is fourth St. South LIma. dyna motor had a 400 cps output. Kv4li
I have not been to the new site. It has been years since I frequented them.
i first got hooked in electronics and eventually into amateur radio when i stumbled upon my Dad's Old college text books and most specially his old 1949 issue of the arrl radio amateurs hand book. igave up reading Marvel Comic books after that. I was 9 years old at the time !!!
Did your mother catch you reading the ARRL Handbook? Ha.
I got mine down on Canal st back in the 60's when I lived in NYC
A Krystyanna living in a lucky time.
Whoops, It is actually the 40M transmitter. It has the top and when opened it has the green felt underneath. It is pristine. I will have to review your transmitter videos.
I have a couple of these arc 5's one was butchered by someone the other is untouched. Thanks for the information
They made so many, I think they were prepared to fight a war into the 1960's!
I had several and a few dynomoters I had the 3-6 Mhz and 6-9 mhz ones
It looks to me like the undercarriage wiring has had some type of sealant applied to it, it looks glossy, judging by the still image at ~ 3:36. I have a unit, probably a similar model, incomplete, or missing the dial in front but having a few parts loose inside. But the wiring and components inside, HOW INCREDIBLY IMMACULATE! On mine, somebody really went to town and tied a thread around the insulation every 1 or 2 cm or so, across every inch of wiring, and I can see the little red splotches of paint, or wax, whatever it is, I'm guessing to indicate where there may be any modifications to original work? I really am getting into these videos, suddenly, result of my curiosities regarding this funny green 'Dynamotor'/'Interphone Amplifier' box radio gadget from 1943 my friend gave to me (I'm not a radio enthusiast- I'm a musician).
Thanks for your knowledge and for sharing, awesome stuff!
Yes some kind of goop or protectant and they likely needed it! The components would be susceptible to water and perhaps as the life of the radio was extended and it was used for ground service, they added it. This kind of jungleproofing was done to most US sets by wars end.
Can you tell me what pins 6,7 on the fron panel are for? They are marked LV on the schematic... and one guy says a shunt needs to be conected between them But I can't fugure out what for. Thanks for whatever you can tell me!
Yes that is basically the place where a switch would go to turn on the filaments and start the Dynamotor!
very nice ! from LY3CU
I have been to Vilnius and Trakki. Awesome place!
What printing service do you use for those books?
I actually printed them at work in a small company where we had a little production group that did literature. A classic G-JOB.
A 12c5 rare made good af amp.
All of those old triodes can do audio and a lot more.
Hey - anybody know what V1 and V2 are for? One right at the input, and one right at the output on the BC-454 schematic.
Great Question! V1 and V2 are neon lamp bulb limiters. They protect the receiver's components like fine transformer wire and capacitors from being damaged - and of course the operators ears!, When a sudden burst of static, lightning or radio frequency signals as with a strong transmitter, or when local arcing suddenly appears, (or EMP) they flash! This CLAMPS or LIMITS the voltage to less than 70 V peak. Yes they flash orange when this happens.
Thanks for the info! Makes sense. I’ve bought a bc-454 on eBay and am preparing to get it I working condition. I had one many years ago as a teenager...
And by the way, love your videos!
What about powering up with 24 volt battery charger?
AF, most chargers nowadays are using not only higher voltage, but pulse techniques, so be careful. Some older types might work to drive a dynamotor or I suppose you could add regulation.
Oh and a small 12 V gel cell or motorcycle battery across a charger might work.
toon? toobs? aloominum?
What planet is this guy from?
Planet RF- Ha.
I wish I noo what he was saying