http://www.qsl.net/n4xy/rcvr_national.html

This site has a few of the aritcles published by W1OOP. Some were mentioned
above.

Some pictures are up on my web site (Hobby only nothing for sale) at
http://www.ppinyot.com/national.htm. More later.

Thanks again,

Paul P.

I use an NC-300 as my main receiver for AM.

Replacing the frequency determining L-C network of V3,
the second converter, with a crystal (like the NC-303)
is worth the effort. Then IF will stay in alignment.

"Grumpy The Mule" wrote in message
...
I use an NC-300 as my main receiver for AM.

Replacing the frequency determining L-C network of V3,
the second converter, with a crystal (like the NC-303)
is worth the effort. Then IF will stay in alignment.



Being somewhat off center, I'd obsess about a means
to tie that LC network to the BFO, get them to track,
and call it variable passband tuning.. But I am not
wrapped too tight.

Pete