[Elecraft] K3/100 - SN 7071 - No output on SSB

Bill Coleman aa4lr at arrl.net
Mon Dec 31 15:22:51 EST 2012


On Dec 31, 2012, at 2:12 PM, Bill Coleman <aa4lr at arrl.net> wrote:

> OK, I just assembled this rig a few days after Christmas (I have the best XYL ever), and while I've made hundreds of successful CW contacts, I haven't had anyone hear me on SSB.
> 
> When TUNE or key on CW, I get the full 100 watt output. 
> 
> I believe the microphone works. The VOX trips, I can hear my voice in the monitor, and adjust the ALC and CMP levels easily.
> 
> However, when I flip the meter over to SWR / RF and speak, there is only one bar indication on the RF meter. No matter how much I talk / yell into the microphone.
> 
> I've been trying to think what might be wrong. I only have the stock 2.7 kHz filter, which I installed at FL3. I have the FLTX SB menu set to FL3. I do not have the rig in TX TEST mode. In TX TEST mode, there is NO bar in the RF meter. 
> 
> What have I done wrong?

OK. I figure this out.

During the installation of the KREF3 board, I busted C2 off the board while trimming a connector lead. Gary is already working on sending me a replacement.

To verify this was the cause, I carefully tack soldered a small ceramic disc capacitor to the connection points. SSB now works. 

Sorry to mess up the list with my stupidity.

Bill Coleman, AA4LR, PP-ASEL        Mail: aa4lr at arrl.net
Web: http://boringhamradiopart.blogspot.com
Quote: "Not within a thousand years will man ever fly!"
           -- Wilbur Wright, 1901



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