Thanks for the video, I just bought a Gilfillan neutrodyne for the look. I just love it, I understand tube radios and early stuff but this is another level. I been looking for any and all information. Your video solves a few issues right off the bat.
Chelsea Radio had a Regen license from Armstrong and got to spend some time in the courts because of it. They produced the Chelsea Super 5 and Super 6 as 5 and 6 tube TRF radios in 1925. In 1926 they came out with a ZR-70 which is a 7 tube gang tuned TRF and in 1927 came out with the AC-B-6 and AC-B-7 which with also 6 and 7 tube gang tuned TRF radios but with an AC power supply added as a separate box with a cable. I'm pretty sure that AC-B-7 was the last radio the Chelsea Radio Company produced before filing for bankruptcy in 1928. The latter two radios were licensed under RCA patents.
Thanks for the video, I just bought a Gilfillan neutrodyne for the look. I just love it, I understand tube radios and early stuff but this is another level. I been looking for any and all information. Your video solves a few issues right off the bat.
Amazing. Very interesting.
Wasn’t the superheterodyne circuit available at this time? Or was Chelsea too cheap to license Edwin Armstrong’s patent? Nice little radio though!
Chelsea Radio had a Regen license from Armstrong and got to spend some time in the courts because of it. They produced the Chelsea Super 5 and Super 6 as 5 and 6 tube TRF radios in 1925. In 1926 they came out with a ZR-70 which is a 7 tube gang tuned TRF and in 1927 came out with the AC-B-6 and AC-B-7 which with also 6 and 7 tube gang tuned TRF radios but with an AC power supply added as a separate box with a cable. I'm pretty sure that AC-B-7 was the last radio the Chelsea Radio Company produced before filing for bankruptcy in 1928. The latter two radios were licensed under RCA patents.