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 Syncrodyne tuner Part 4 some R&D with coils and valves.
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 Return to top of page · Post #: 1 · Written at 2:11:44 PM on 21 October 2018.
Fred Lever's Gravatar
 Location: Toongabbie, NSW
 Member since 19 November 2015
 Member #: 1828
 Postcount: 883

Well here is my final attempt to make a ring coil demodulator work and I pretty much succeeded in working out the basic rules for success.
Really its a tale of things that did not work, but that's only because of my ignorance of RF coils and how valves work.
I always liked R&D, they paid you for mucking about in a lab or workshop and make cool things! Only now nobody pays me!

That's pretty much it for the Syncrodyne with a coil demodulator and also with a Mixer valve.
As it turns out if one was to have a go at making a Syncrodyne it would be better to go for the Mixer valve option to avoid the coil problems.

I'll send a PDF of the part 4 to Brad to tag to this post.

My next project is to make a Superhet but with a 1.8MHz IF strip, just to see how it works and have a go at winding a full coil set.
What could possibly go wrong?
Fred.

The Synchrodyne AM Tuner - R&D


 
 Return to top of page · Post #: 2 · Written at 10:28:30 PM on 21 October 2018.
Brad's avatar
 Administrator
 Location: Greenwich, NSW
 Member since 15 November 2005
 Member #: 1
 Postcount: 6354

Document uploaded.


‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾
A valve a day keeps the transistor away...

 
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