[Elecraft] K2: SSB FL1 OP1 weaker audio output

[JimWMiller@aol.com]

In a message dated 8/18/2002 11:39:12 AM Eastern Daylight Time, 
ag4ku@flham.com writes:


> From AG4KU
> I'm seeing the same thing. Just completed #2794 with ssb and there is a 
> 6-10
> db difference in audio level between opt1 and the stock K2 filters when
> testing with a noise generator. I added the 2nd Xtal filter mod and the
> attenuation is even more noticeable now. I have to run opt1 with AF gain
> near max on weak ones. CW on the stock filters NEVER needs to go above 12-1
> o'clock even on the weakest sigs. In fact, if I run too much AF gain on the
> stock filters, the audio will start to clip it's so hot. Is this normal?
> 

From WA2UMP...
I've been testing the SSB board and have encountered a problem. I wonder if
> 
> others have delt with the same issue.
> 1. The audio output of the SSB FL1 OP1 filters are much weaker than FL2,
> FL3,
> and FL4.
> 2. Also when listening to WWV or CHU, USB is louder (6 db) than LSB.
> Scott
> 
> 
-_-_-_-_-_-_-_-_-_-_-_-_

Tnx to all of those who have responded so far. Sound like Scott and I have 
the exact 
> same problem.  To clarify the problem, SSB FL1 OP1 is barely usable and FL2, 
> FL3, FL4 are much louder even though *narrower*.   In my case, I don't rule 
out a hardware problem so I'll look for the usual problems. I have not done 
the mod to smooth out the SSB ripple and yes that will probably equalize the 
pitch but can't fix the poor gain.  

I had fun with the Spectrogram software and found it to be helpful in 
tweaking the center freq, although I was not far from the recommend BFO 
settings.

So Tnx again for the info and please keep those troubleshooting ideas 
coming...

73 Jim WA2UMP K2:2679



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