[Elecraft] KRX3 in action

[Dr. Werner Furlan]

hi Alexandr, 

Alexandr Kobranov schrieb am 26 Sep 2008 um 9:23:

> are the birdies dependent on bandwith also?

yes they are. I can see them on the Panadapter very easy, and they jump 
aside when I change XFIL:

> I have had similar problem with ma K3 base unit and replacing of RX 
> mixer - small board, the same applied in KRX3 solved this.

ok I'll try this. 

> So my recommendation - swap RX mixer boards between base and KRX3 and
> compare results. I is what I will try is this case.

I get the loudest birdie when I touch the relay or toroid on the K3SYN.

> About sound main/sub - what is used XFIL? if 5 poles what is offset 
> differenciies?

I switched the filters in the main and sub receiver but it did not change this 
sound. I think it could be a AGC effect. I have the feeling that with AGC off 
the effect is less.

> If 5 poles, try to little bit change offset for one of them and compare.
this did not change anything. It has to do with AGC I think. 

> I have my KRX3 just on USPS so not able to test here directly.
I am vy interested what you find when you have it installed! 

I found another anomality: if sub rx and main rx are linked together, this 
does not affect the coarse tuning with the RIT knob. Only the main VFO is 
tuned and you have to press A>B to have the two VFO's on the same 
frequency again. Maybe it is intended?

73! de Werner OE9FWV

-- 
Reality is for people who lack imagination.


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