- 1. Re: [Amps] crossmodulation in PA (score: 1)
- Author: Peter Chadwick <g3rzp@g3rzp.wanadoo.co.uk>
- Date: Fri, 7 Sep 2007 10:46:03 +0200 (CEST)
- Over the years, this has been a well known problem on ships at HF, especially where they run full duplex telephony. Not that many do these days in the commercial field, but the military have a lot of
- /archives//html/Amps/2007-09/msg00068.html (7,091 bytes)
- 2. Re: [Amps] crossmodulation in PA (score: 1)
- Author: "Johan" <johan.van.de.velde@telenet.be>
- Date: Fri, 07 Sep 2007 09:09:03 +0000
- This might be of interest : http://www.cabelcon.dk/technic/terms/PIM-english.pdf _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mail
- /archives//html/Amps/2007-09/msg00069.html (8,676 bytes)
- 3. Re: [Amps] crossmodulation in PA (score: 1)
- Author: Bill Fuqua <wlfuqu00@uky.edu>
- Date: Fri, 7 Sep 2007 09:40:42 -0400
- In the old days military sites had the receiving equipment and antennas a few miles away from the transmitting site to avoid a number of problems. Naturally receivers those days were easily overloade
- /archives//html/Amps/2007-09/msg00073.html (8,468 bytes)
- 4. Re: [Amps] crossmodulation in PA (score: 1)
- Author: "jeremy-ca" <km1h@jeremy.mv.com>
- Date: Fri, 7 Sep 2007 10:10:45 -0400
- Aboard USN ships RX and TX antennas were often parallel and only 30-60' apart. This was with WW2 and earlier technology. Transmitters were usually in the 500 to 2KW input range. TBK, TBM, TBL, FRT we
- /archives//html/Amps/2007-09/msg00075.html (9,533 bytes)
- 5. Re: [Amps] crossmodulation in PA (score: 1)
- Author: Peter Chadwick <g3rzp@g3rzp.wanadoo.co.uk>
- Date: Fri, 7 Sep 2007 18:20:43 +0200 (CEST)
- I had the direction indicator pot in the T2X burn up with RF when using the tower as a vertical. The RF current through the rotator to the capacity hat of the 205BA appeared to cause the problem: add
- /archives//html/Amps/2007-09/msg00078.html (7,546 bytes)
- 6. Re: [Amps] crossmodulation in PA (score: 1)
- Author: "jeremy-ca" <km1h@jeremy.mv.com>
- Date: Fri, 7 Sep 2007 12:57:19 -0400
- I didnt lose the pot but had to bypass the indicator lines in mine. It was at a past QTH, the 100' tower was shunt fed on 160 and a Christmas Tree of W2PV-4's were on top for loading. When I replaced
- /archives//html/Amps/2007-09/msg00079.html (8,729 bytes)
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