[Elecraft] K2 low xmt audio revisited and REPAIRED!

[David A. Belsley]

Just in case any reflector newcomers or onlookers are thinking this guy 
is just nuts with euphoria, let me second (and third) absolutely 
everything he says.  You're buying one heck of a lot more than just a 
top-notch kit with the Elecraft gear.  It's got an absolutely unique 
team standing behind it.

dave belsley, w1euy


On Jan 16, 2004, at 4:04 PM, DAVE HEALY wrote:

> After building and installing the KSB2 adapter into my K2, I was 
> saddled with very weak transmit SSB audio.
>
> Only realized about 0.5 watts peak out (big whistle) with the tune 
> mode at 15 watts.
>
> The receive sounded fine, however.
>
> Gary Surrency of Elecraft worked with me for many, many days.  Each 
> day he'd give me his thoughts and each evening I explore them and 
> report back to him in the morning.
>
> If you haven't had the pleasure of working with Gary, let me tell you 
> that he is one astute and PATIENT guy.  He knows the K2 inside and 
> out.
>
> Anyway, we started with the mike (MH2) and worked our way through the 
> balanced modulator, ALC, speech compressor, BFO injection and the SSB 
> crystal filter.
>
> I had the K2 packaged up twice, ready to send it to Gary as I was out 
> of ideas and PATIENCE!
>
> He kept plugging away every day, try this, Dave....Try that, 
> Dave...This should do this, does it?
>
> So I unpacked it again yesterday and did an all-nighter.
>
> About 4:15AM I noticed that the voltages on the filter switching 
> diode, D13 were strange.  Got out the Hakko 808 (how did I ever live 
> without this beautiful piece of hardware?!) and changed D13.  No 
> better.
>
> Looked for voltages on D14, but they are not listed in the manual.  
> Since the 808 was hot, I changed D14.
>
> VOLA!  All was well with the world!  Everything works PERFECTLY!
>
> I just wanted to pass this along in case someone MAY have a similar 
> problem and to give my heartfelt thanks to Gary Surrency for his help. 
>  It was above-and-beyond what I've experienced with any other company.
>
> A thanks to Scott, also for rushing out parts to me.  He is another 
> great part of the Elecraft team.
>
> Wayne and Eric......You have an absolutely top-notch team.
>
> You can be proud of your product because it is without question, the 
> best.  But you can also be just as proud of you team, as they are the 
> cream of the crop.
>
> Thanks to all and 73,
>
> -dave-  N7DKK, Medford, Oregon
>
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