Paragon PIN Diode Mod

From Ten Tec Reflector January 21, 1999

If you have read Rhode's articles in QST you have a pretty good idea what the benefits are from changing out the switching diodes and replaceing them with PIN diodes in the receiver section between the antenna and the first mixer.

The diode I chose was a Motorolla MPN-3700 two wire diode.

The diodes that should be replaced are D1-D16 on the RX High Pass Filter Board (81330).

I also changed out diodes D1,D2, D7 & D12 on the first Mixer boards.

I found the receiver was quieter and on Contest weekends with all the big guns on I had much less problem with Intermod. The trick is finding the diodes they are really hard to get in small quantities. Most of the suppliers want to sell several thousand.

Good luck and 73

Jack WN5A