Nick,
If you scroll back through some of the earlier posts on this thread you will see that I have a very similar issue with my v6 that I just assembled in the last two weeks.? It is not as drastic as your reduction in power on 40meters, 5watts vs your 3.24watts.? I ran a test using a tone generator as the audio input and got different results.? 40meters was the highest output and then tapered down from there to 10meters being the lowest, as expected.? This points to an issue with unbalancing the mixer to get the clock2 to the power amp as suggested by Jerry KE7ER.? I will try reducing the value of R104 to maybe 1kohm (add a 2.2k in parallel).? I will post what I find out.
You can simulate an audio tone generator by playing a constant tone on a PC or mobile and holding the mic close to the speaker.
The good news is that SSB is not affected.? The bad news is if you wanted full output on CW.? Read the messages from Jerry for more information.? Thank you, Jerry!
73
Evan
AC9TU
