Welcome to Australia's only Vintage Radio and Television discussion forums. You are not logged in. Please log in below, apply for an account or retrieve your password.
Australian Vintage Radio Forums
  Home  ·  About Us  ·  Discussion Forums  ·  Glossary  ·  Outside Links  ·  Policies  ·  Services Directory  ·  Safety Warnings  ·  Tutorials

Special Projects

Forum home - Go back to Special Projects

 Syncrodyne tuner Part 4 some R&D with coils and valves.
« Back · 1 · Next »
 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: 1049

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?

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
 Location: Naremburn, NSW
 Member since 15 November 2005
 Member #: 1
 Postcount: 6851

Document uploaded.

A valve a day keeps the transistor away...

« Back · 1 · Next »
 You need to be a member to post comments on this forum.

Sign In

 Keep me logged in.
Do not tick box on a computer with public access.