[Elecraft] K3 - Strange problem on 10 Meter SSB with power

[Alexandr Kobranov]

Friends,
maybe we have to sort problems with SSB power level to permanent 
problems and temporary problems.
Permanent lower level is possible to cure via VCE gain setting (I 
suppose & hope).
Temporary problems are more complicated. I remember my problems with 
miliwat output levels via KRX3 vith certain version of F/W, when firts 
(after switching on) SSB TX attempt was 6 - 10dB lower below CW or 
TUNE level. Just after one dit or dash in CW mode and going back to 
SSB it was OK, level was like on CW (measured in 2tone test). It was 
caused by combination of f/w level (maybe corrupted) and using TUN PWR 
level other then -norm-.
Shortly after u/g to 2.10 (if I remember correctly) and switching TUN 
PWR to -norm- this problem on miliwat output level dissapered. (and 
now I am using 100mW on ANT port so not checked miliwat KXV3 output 
intensively during last weeks with newest f/w).
Also I am not sure if such kind of temporary problems are also 
reported with 10W version. (SSB power temporary dropped).
Or is it mainly with 100W version? Any other experience with miliwat 
output?
Hope in Elecraft support they are tracking all reports and testing 
reported behaviour to keep clear picture and plans for possible f/w 
updates/bug elimination.
Maybe will be good to see some more comments from Elecraft support to 
reduce individual doubts etc...

73!
lexa, ok1dst
K3/10 #727




Ian Maude napsal(a):
> Toby Deinhardt wrote:
>> Hi Lyle,
>>
>> I do not know if we all might be talking about various ills with 
>> similar symptoms. It might be that more than effect might be behind 
>> the various observations, imho.
>>
>> What I have, to the best of my memory, observed in various firmware 
>> versions is that there is/was a tendency for the K3 to have lower 
>> output in SSB on both(?) sidebands than in CW or tune modes. The 
>> output is at times 1dB less and at times 6 or more dB lower. This 
>> effect is stronger at lower power levels than at higher and usually 
>> occurred after changing the power level request while in SSB.
> Have you tried setting Config: TXG VCE to 3.0dB?
> 
> 73 Ian
>