[Elecraft] K2 KSB2 low output

gt-i at gmx.net gt-i at gmx.net
Tue Sep 12 16:59:18 EDT 2017


Hello again,

Thanks to Volker, DL4ZBG, he replied directly with the following link: 
http://www.qrpproject.de/Media/pdf/ZusammenfassungMods.pdf
It is a nice description of many improvements that can be made for the KSB2.
However, I believe that I do have a fault in the KSB2 (Rev. D) or K2, 
since I know it behaved differently years ago. For example, the ALC 
shows 7 steady bars, no matter what power level I set nor how much SSB 
amplitude is produced. Regardless of the power level set, the RF signal 
is never stronger than 1 bar.
I will try to experiment further, and I'm open to get any hints.
Thanks!

Gernot, DF5RF


Am 12.09.2017 um 01:53 schrieb gt-i at gmx.net:
> Hello list,
> I recently tried to use my K2 on SSB. To my suprise, there was very 
> little output. Even with full power it only showed the first bar. I 
> did some SSB QSOs during the first years...
> Digging deeper, I found the DSB signal showed a Vpp of ~1V, but after 
> the filter the SSB signal was only 20mV or so. Is this kind of loss 
> normal for a 7-pole filter? If not, any hints how to repair the filter?
> tnx es 73
> Gernot DF5RF
>
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