Re: [Elecraft] K2 / KX3 receiver observation - need explanation

2015-06-06 Thread gt-i
Don, thanks for the hints. The K2 is almost original with some simple mods that had been published during the "early days". I pulled out my XG3 and tried to reproduce the problem. But I could not hear a clean 2nd or 3rd signal, but a lot of hard noise nearby. I guess the XG3 is just not clean en

Re: [Elecraft] K2 / KX3 receiver observation - need explanation

2015-06-06 Thread gt-i
Hi Olli, yep, this might be the case ... but I did not check during the contest using other receivers than those mentioned - I was quite busy :-) 73, Gernot DF5RF __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/e

Re: [Elecraft] K2 / KX3 receiver observation - need explanation

2015-06-05 Thread Vic Rosenthal
Perhaps it was 3-phase hum? The really big amps run on 400V 3-phase circuits (no, Elecraft won't be making these)! Vic 4X6GP/K2VCO > On Jun 6, 2015, at 12:54 AM, Oliver Dröse wrote: > > Hi Gernot, > > as I am hearing lots of similar signals from a few of the very very big guns > here in Eur

Re: [Elecraft] K2 / KX3 receiver observation - need explanation

2015-06-05 Thread Oliver Dröse
Hi Gernot, as I am hearing lots of similar signals from a few of the very very big guns here in Europe contest after contest and no matter if using my K3's, the KX3, or whatever other rig (i.e. FT-817, TS-590, ...), I'd suppose this is rather a TX quality problem of them than one with your re

Re: [Elecraft] K2 / KX3 receiver observation - need explanation

2015-06-05 Thread Don Wilhelm
Gernot, Because you are hearing the same thing (or almost the same thing) on 2 receivers, give thought to the possibility that the source may be outside the receivers. Even mild corrosion in the antenna system can produce a connection that acts like a diode and will mix strange frequencies tog

[Elecraft] K2 / KX3 receiver observation - need explanation

2015-06-05 Thread gt-i
Hello everybody, during the WPX contest I noticed some weird sounds in the K2 when tuning to strong (>S9+20db) stations. The sound was distorted, kind of ripple, but it did not sound like typical ringing. I also noticed LZ9W booming in on 80m with S9+40db, producing 3 images in the K2 and the K