Bob, Thanks for the encouragement
I have considered all of the suggestions for troubleshooting the problem I have with the IC7000.? I have tried to trace the HF RF path with an oscilloscope from where the signal comes through the cable from the main board to the PA board.? I have traced the signal and inspect all components through to the output at ant1.? The signal seems to loose its punch where the PA FETs combine into the L305 transformer.? The bias setting of the PA FETs seem to be correct.? After the signal reaches the rx/rx relay it passes through the selected HPF where it reaches ant1.? The resulting signal is only a few milliwatts.? I have tried to keep the setting in SSB and I see modulation when speaking into the microphone. ?
I know it is difficult to troubleshoot the issue remotely but I appreciate any and all ideas.
Thanks
Tommy. KF4RWG
Well this is #30 then. That's OK because when the rest of us have this problem we'll appreciate?every?one of?these replies.
Keep on writin' you guys.
Bob W4JFA
Forgive me if this has been mentioned before but as this is the 29th reply I haven't gone back and read everything.
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I always go first to where the effect of a fault is obvious without any ambiguity, in this case the rf output ie Ant 1 connector, working back to eliminate ALL the stages involved, including in this case the SO32 jack.
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Good luck.
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Geoff
VK3ZGW
