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 <[email protected]> wrote: > > 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 receivers. If you would hear > it on *every* strong signal than it would sound like an RX problem but I > suppose you also heard all the strong but clean signals, did you? > > 73, Olli - DH8BQA > > Contest, DX & radio projects: http://www.dh8bqa.de > > >> Am 05.06.2015 um 16:07 schrieb [email protected]: >> 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 KX3. However, in the K2 the 2 ghost signals were frequency >> modulated. How could this happen? >> Another big one, LY2W, also produced 3 signals in the KX3 but all the 3 were >> nice and clean. >> >> I thought these ghost images would depend on the receiver architecture, or >> am I wrong here? >> >> Regarding the first observation: Since the K2 is already > 10 years old, >> could component aging already play a role. If so, where to look for? >> >> Thanks for any ideas! >> 73 >> Gernot >> DF5RF >> ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [email protected]
