[Elecraft] [K2] Sensitivity on 17m

[Bill W4ZV]

ATU INIT appears to have restored the sensitivity loss on affected bands. 
Anyone have any ideas what might have caused this problem?  Hopefully ATU
INIT didn't create other problems!

73,  Bill


Bill W4ZV wrote
> Mike K8CN and I both came to the same conclusion overnight.  Check the ATU
> in bypass mode!  Using both RX ANT and forcing bypass via CAL_P, the
> sensitivity is back on 17m.  I also notice smaller but still noticeable
> loss on 15m.  
> 
> I didn't build this KAT2 myself but it seems to tune OK for TX on all
> bands.  I guess it's time for some ATU troubleshooting but other ideas are
> appreciated.
> 
> 73,  Bill  W4ZV
> Bill W4ZV wrote
>> During a SOTA activation Saturday I used 17m quite a bit as well as 15
>> and 20.  Sensitivity on 17m seemed weaker than on adjacent bands and I
>> thought it could be my antenna (44' doublet up 25' with 450 ohm ladder
>> linie through a BL1 4:1 and KAT2).
>> 
>> Tonight I decided to check it with my XG3 and indeed the 1uV setting is
>> noticeably weaker than on 15 and 20.  I first redid RX alignment of L10
>> and L11 on 15m and then C32 and C34 for 17m with no improvement.  The
>> S-meter reads the same for all 3 XG3 levels but 1uV sounds weaker on 17. 
>> Anyone have any ideas?
>> 
>> 73,  Bill  W4ZV





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