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Lloyd 1985 · 2nd Jan 2010, 11:34 pm

Hi

your thread on building this radio has inspired me to have a go! I've used most of your design, but I've changed a couple of things. I didn't have an EBC90, so after a quick bit of research and a dig through the valve pile, I found an EBC81 should do the same job! I also bought a box of radio bits, and got some IF cans, the aerial and oscillator coils from a cossor (possibly a 520) and the wavechange switch! since I had all those bits, I've decided to copy the circuit of a cossor 520's mixer/oscillator and add it to your diagrams. no idea if its going to work yet!! I did have the amp, detector and IF amp working, I was getting the test tone on 465kc/s! This is the first time I've actually tried to build a valve radio, so there's a lot to learn

so far I'm quite enjoying it. when I get a bit further on with it, I'll start a thread about it.

thanks for this thread!
regards,
Lloyd.

2nd Jan 2010, 11:34 pm	#36
Lloyd 1985 Nonode Join Date: Jun 2008 Location: Coningsby, Lincolnshire, UK. Posts: 2,819	Re: My new Superheterodyne! Hi your thread on building this radio has inspired me to have a go! I've used most of your design, but I've changed a couple of things. I didn't have an EBC90, so after a quick bit of research and a dig through the valve pile, I found an EBC81 should do the same job! I also bought a box of radio bits, and got some IF cans, the aerial and oscillator coils from a cossor (possibly a 520) and the wavechange switch! since I had all those bits, I've decided to copy the circuit of a cossor 520's mixer/oscillator and add it to your diagrams. no idea if its going to work yet!! I did have the amp, detector and IF amp working, I was getting the test tone on 465kc/s! This is the first time I've actually tried to build a valve radio, so there's a lot to learn so far I'm quite enjoying it. when I get a bit further on with it, I'll start a thread about it. thanks for this thread! regards, Lloyd.