Just purchased some 40 meter rocks. With the transmitter using the crystals the output is near 20 watts. Unfortunately the AM does not work
Hi Mike,
I updated my last post to further clarify.
Back in 1951, Art Collins at Collins Radio calls Wes Schum at Central Electronics, and Wes sells Art five 10a kits. The Collins staff builds up the kits, and they have the exact same problem you are experiencing! You are in good company Mike!
Play the video below, and around 28 minutes into it, the story is presented by Nick Tusa, K5EF:
https://youtu.be/q0SDwieAeLwTo get a 20a on AM/PM/SSB on 7.2Mhz, you need a VFO input at 16.2Mhz (5.4x3), or use a crystal on the front panel stamped 16.2Mhz fundamental.
Using a direct frequency crystal as you have been doing, works for CW only since the 9Mhz section and the Balanced Modulator gets bypassed.
Note: You should be able to operate direct at 9 Mhz and balance the carrier, and run voice modes. I forget where the band switch gets set at, but it is either 40m, or 20m to find the 9 mhz peaks.
Better use a dummy load!
Jim
Wd5JKO