Bill,
Is the K2 ATU like the ATU in the K3 in that it simply selects values
for 50:50 Ohm rather than physically bypassing? If so, something has
undoubtedly overwritten the 50 Ohm values.
73,
... Joe, W4TV
On 6/18/2013 9:21 AM, Bill W4ZV wrote:
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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