[Elecraft] KX3 Tuning noise

[gt-i at gmx.net]

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 gt-i at gmx.net:
> 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, <gt-i at gmx.net <mailto:gt-i at gmx.net>> 
>> 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
>
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:Elecraft at mailman.qth.net
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
>