Many years ago I contacted someone selling tubes. He said, I have 75 tubes and will sell them to you for $75. All the tubes were from the 1920. Good deal for me.

@curlyzim1

5 ай бұрын

Good deal 👍

I've learned that one way you can make your tubes last longer is a voltage drop to slowly warm them up. Could be easily designed with a drop resistor and relay and a switch. Basically a three-way switch on the off and on.

I love tubes, I build a lot of stuff using them, There is something I find fascinating when you can listen to the sound of something that is 100 years old, it tells a story about the people making them in the past somehow. I always liked tubes even before I got them, from the first day I heard there was something made of glass that glows and make sound. eventually I got my own to play around with

@curlyzim1

5 ай бұрын

Thanks for the nice comments 🙏. I agree watching the tubes glow on an Atwater Kent Breadboard or a Radiola or through the tube window on a 1920’s big box is magic. Glad you enjoyed the video thanks for liking and subscribing. Hope you enjoy my other videos 🙏.

@mastopage3120

3 ай бұрын

Awesome I am also tube lover. Great video.

@user-bo8eq7ki5w

27 күн бұрын

@@curlyzim1 We just feel it.. we understand that there is some kind of story behind this. A part of a past life that we do not know, but is so valuable in itself, filled with events, human affairs, and what 's there - OUR LIFE . I also collect old radio magazines and radio tubes from before 1940. Big pot-bellied glass flasks )). With a large base (even before the 6.3 volt octane series.). And when you listen to receivers on such lamps, it's magic. 73 !

My favorite vintage tube is the type 24, love the look and the craftmanship and how its a blends of modern vs raw look.

Fascinating video I had some Ediswan tubes once mid twentys. Found in derelict house.

I very much enjoyed watching your video. A great history lesson.

@curlyzim1

7 ай бұрын

🙏

I'm an old analog guy I'll tell you one thing vacuum tubes are much more forgiving than solid state

Very interesting thank you from England.

@curlyzim1

6 ай бұрын

Thanks for the nice comment and subscribing. I like the 12au7 in your email address. 👍

Tubes, best racket second to the light bulb of old times. Both always burned out after a short life.

@jennyjansen754

Ай бұрын

They were the only game in town so what are you gonna do.

@offthecuff6352

29 күн бұрын

They did not "BURN OUT" after a short life. If the circuit is designed properly they will out last your lifetime! I have a few audio amplifiers which use tubes from the 1920's and 30's which are on at least 12 hrs every day with no issues. I even leave one on for ambiance music 24/7 that has Type 71 triodes, it only puts out 1/2 watt per channel but it is one darn sweet amplifier. My amplifiers have been stabile since 1969 when I personally overhauled them.

@UQRXD

29 күн бұрын

@@offthecuff6352 So they were overhauled with new components. IS that why they last?

@user-bo8eq7ki5w

27 күн бұрын

@@offthecuff6352 Excuse me.. I assume that you did not understand this magnificent metaphor)) "the radio lamp burned down", but it moved the radio and computer forward on the scale of progress. You have to pay for everything .. 73 ! )))

@offthecuff6352

27 күн бұрын

@@user-bo8eq7ki5w Yes, I missed the point, I am old and must have been tired. I enjoy building tube equipment. 73 my friend hope to hear you sometime on the airwaves. :))

Great Job 👍

Thanks for the explanations of the "01A" types. I always wondered why some had visible light emitting from the filaments, and some do not light up much... but both work about the same. Good to know it's normal.

@curlyzim1

5 ай бұрын

Thanks for nice comments my friend 🙏. I like your Thumbnail of a Triode how fitting for this video. The difference in the 01A was the thorigated filament that only drew .25 amps. Whereas the UV201 drew 1 amp. The UV200 was a soft detector with argon gas. For detector use only max plate voltage of 45 VDC. In the early 20’s due to high current consumption most receivers were a max of 3 tube or less. All about battery life using a 6 volt car battery. Electric AC sets weren’t invented yet. The 01A and UV201 had a 5 volt filament with a rheostat in series. You would turn up the rheostat till you had sufficient gain and heard a signal. As the battery drained you would turn it up a little more. Thanks again for liking and subscribing. Check out my other videos how to operate a regenerative or TRF receiver for more information. 🙏

Beautiful collection! Thank you for showing us.

Love your video. I learned that there was a transition from UV200 to the 01A's. However I think you mean "thoriated" with the chemical thorium. The side pin was needed to have the tube in the correct position in socket. Those 01A's also have bigger pins on the filament part of the tube. They could be installed correctly by either that side pin in a socket or in a base that matches the correct pin sizes.

@curlyzim1

Күн бұрын

Thanks for watching 🙏. I’m glad you enjoyed the video. Please go to my antique radio playlist and check out my other videos. I’m so glad my videos are helpful to keep vintage electronics alive. It makes me happy every time I look at them or listen to them. I play them daily. 73’s my friend all the best to you and your family 😀

I have some radios and tubes from this era. thanks for the video.

"....evacuated the vacuum." Neat trick if you can do it.

Really interesting!!

I have a Radioa III but no WD-11's. Thanks for the tip about the VT-24.

@curlyzim1

Ай бұрын

Remember you’ll need an adapter to plug into the socket.

Thankyou so much for taking the time to video and upload - I really enjoyed and thoroughly appreciate your kindness and efforts in sharing

@curlyzim1

6 ай бұрын

Thanks for the kind comments 🙏. Hope you enjoy my other videos 😃

@user-bo8eq7ki5w

27 күн бұрын

@@curlyzim1 KZread has closed the time ring))). And the old radio tubes have found their voice again ! However, how did they make such curved "Horn loudspeakers" there in the past? I wanted to do it myself with my own hands, but I broke my head :))

Well done!

@curlyzim1

5 ай бұрын

Thanks for the nice comment subscribing and liking my video. 🙏

Thank you for the video. It is incentive for me to get my Dayfan OEM-1 from 1926, up and running. Dave N9HF

@curlyzim1

3 ай бұрын

Thanks 🙏 for the nice comments. I used to have a Dayfan with a rubber horn speaker I sold it at a flea market. There’s not too much to the TRF and regen sets from the 20’s. The biggest failure is the AF transformers opens. You can check with an ohm meter. Check for corrosion on the pin contacts of the tubes and any binding post. Clean with an eraser, wire brush or an X-Acto knife. If your battery connection post or cable isn’t marked check the continuity with an ohm meter. RF and AF plates should be +45 to 90 volts most likely +90. Detector should be +20 volts. If your set has a “C” grid bias battery it should be - 4 to 9 volts. If your radio uses 01A tubes the filament battery should be 6 volts. You can power the set with batteries or a power supply battery eliminator. Please check out my Battery Eliminator power supply video. Under my antique radio play list. Thanks again for subscribing comment and like. 73’s KA1VMW Mark

1074 years old and I have a lot of these tubes and actually I had several of these working radios that had tubes like that in them and I had my roof of my house redone and some decking was taken off of the house it's quite large house a lot of these radio for stolen by the roofers and I had no idea this even happened until about six to eight months later I went up in the attic of the house to look around and I said oh where's all my radios I called the police department basically you can't do anything but I still have a lot of tubes but the radio these tubes went in are gone somebody's got them out there they were restored that's what I used to do anyway yeah I still think about it when I came across that I got to thinking about it even more

@wdmm94

Күн бұрын

Nice people I guess. Steal from a customer.

I subscribed to Audio Amateur forever back in the ???1980s and read an article I think by Erno Borbely about using your own tubes in preamp design. I custom designed a line stage using UY-227 tubes with 6SN7 cathode follower output/buffers and really started to get into the old stuff. His choice of preamp tubes wound up being the 01-A. The best sounding 227s are Champion by far, not the blue glass Arcturus as I may have hoped. Reply

@curlyzim1

5 ай бұрын

The 27 was one of the first cathode tubes for AC electric sets. It is a very durable tube. I’ve made some transmitters using its 6 volt cousin the 76 or 56 type tubes. However 5 pin cathode type tubes won’t work in the early radio set because they controlled the volume by a rheostat is series with the filament. Volume was controlled by adjusting the filament current. Many early receivers had a window to check the brightness of the filament. I love the early primitive circuitry of the early 1920’s.

A ton of inforation.Thanks.

Great!

I have given to me a box of aprox 100 of old 1920s tubes but I don't know how to test them.

@curlyzim1

5 ай бұрын

I would check the filament continuity with a DVM. If the filaments are good that’s half the battle. Do not connect the filament directly to the battery. The early tubes were made to be used with a rheostat on series to control the volume. If you were to connect a WD-11 tube directly to a 1.5 volt battery it will burn up. The maximum voltage rating is only 1.1 volts. Although it’s meant to be used with a 1.5 volt battery with a rheostat in series. The 01, 00 and 01A filament rating is 5 volts but made to use a 6 volt battery with a series rheostat. Most tube testers don’t have the old type tube sockets. I would test them in an old receiver. And swap them around to different stages. You may find that one tube may work better as an AF amplifier and another may work better as a RF amplifier or a detector. Use UV200 or UX200A for detectors use only because the maximum plate voltage is 45 volts. Tubes from the late 20’s and on you should be able to test on most tube testers.

Very interesting. I have several Mullard PM2 types with 2 Volt heaters, one with 6 Volt, a number 30 valve and a D.E.R. marked with the B.B.C. logo so manufactured between 1924 and 1926, a 1.8 Volt Tungsten heater which glows brightly like yours. A top sealing pip as well. Also one Cossor 215P power valve. I made an H.A.C. one valve receiver kit with Denco plug in coils in 1969 aged 14 y.o. I want to make a replica but coils if available are a stupid price so I'll use something else. G4GHB.

@curlyzim1

4 ай бұрын

Always good to have projects and goals. I also have couple PM2’s. And a Cossor I got in a box lot at a flea market

@bill-2018

4 ай бұрын

@@curlyzim1 I got a scruffy Cossor 1929 three valve radio, looks elecrically right but yet to hook it up to batteries H.T., G.B. and L.T. Also a three valve Pye mains set with no valves, 4 Volt heaters.

@user-gc6ow7ys2s

26 күн бұрын

I also made a one valver in ‘62 with a green denco reaction coil which I kept. In ‘62 I was 9 yrs old!

My Freind that is an excellent video. I am about to find me an AT 20 and now I understand why they all have some kind of "201" tube for everything! Thank you. Subscription!

@curlyzim1

6 ай бұрын

Thanks for the nice comments and scribing. I posted a video of my AK-20 and 20-C be sure to check them out. Make sure you use 01A tubes. Do not use 201’s. The “A” tube only draws .25 amps. The 201 draws 1 amp. You can use a 112A for the final AF amp or a 00A for a detector. Thanks mg friend have a Happy New Year.

@peteleoni9665

6 ай бұрын

@@curlyzim1 Got it, will do.

A GREAT COLLECTION OF WORKING RADIO TUBES OF ANTIQUITY!! I WONDER WHY THEY ARE WRITTEN "FOR AMATEUR AND EXPERIMENTAL WORK"?