Hello,
I'm so glad Elecraft found the real cause of the tuning noise. Removed
the pins today. In comparison to the measurements I took last year,
absolutely nothing to hear with antenna connected. Same setup as
described below.
If I disconnect the antenna, the only band presenting very weak tuning
noise to me is 10m, about 2 dbV according to the KX3-dbV display.
While checking the noise, a weak ZA/IZ4JMA popped up on 10mtrs quite
unexpectedly. Which I'd probably would not have spotted previously. 3
calls -> QSO.
I'm happy!
thanks/73
Gernot, DF5RF
Am 02.12.2012 23:29, schrieb [email protected]:
Rick,
with PREAMP off and AGC-Fast the noise is measured as follows (peak
values), depending on band (quiet ) and antenna:
on 10m, on a vertical: 1.1 dbV, on the beam: 1.8 dbV
on 12m, on a vertical: 3 dbV, on the beam: 2 dbV
on 12m, on a vertical: 2 dbV, on the beam: 1 dbV
To get an idea how these values are related to S-points:
S1 indicator on: ~3dbV
S2 indicator on: ~6.5 dbV
Which means if signals are well over S1 you won't hear the noise.
However, the KX3 can well receive signals "on the edge", and then it
becomes distracting.
73
Gernot
DF5RF
Am 02.12.2012 18:04, schrieb Rick Tavan N6XI:
What does it measure with an antenna connected? I can barely hear it
on 10M when the band is dead. If there are signals, it's inaudible.
/Rick
On Sat, Dec 1, 2012 at 8:44 AM, <[email protected] <mailto:[email protected]>>
wrote:
I measured the noise on 10mtrs using the built-in audio dbV
feature - it says 11 dbV above noise (no antenna connected).
Thats a bit too much I think.
I'm also pretty sure that kind of noise wasn't as strong as now
during all these QSOs I made before...
--
Rick Tavan N6XI
Truckee, CA
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