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Re: [TenTec] radios and spectral purity

To: k9yc@arrl.net, Discussion of Ten-Tec Equipment <tentec@contesting.com>
Subject: Re: [TenTec] radios and spectral purity
From: Rick Dougherty NQ4I <nq4i@contesting.com>
Reply-to: Discussion of Ten-Tec Equipment <tentec@contesting.com>
Date: Mon, 14 May 2012 15:57:47 -0400
List-post: <tentec@contesting.com">mailto:tentec@contesting.com>
Hi Jim...wanna watch out with the K3's on the same band..we had a pair on
15m on contest weekend and with 500 ft spacing still fried the front ends
of both K3's....they are NOT as bullet proof as the Orion's...your mileage
may vary...de Rick

On Mon, May 14, 2012 at 10:29 AM, Jim Brown <k9yc@audiosystemsgroup.com>wrote:

> On 5/14/2012 6:58 AM, Rick Dougherty NQ4I wrote:
> > just a few days ago I fired up two fo them on 20m cw...barefoot...on
> 14.005
> > and 14.030 ...just 25 kcs away from each other into separate antenna
> > systems...either could tranmit and would NOT
> > hear any noise from the other...now that is AMAZING.
>
> I'll top that!
>
> I have a 3-el SteppIR on a 120 ft tower, and a year or so ago, I added a
> second tower and monoband antennas for 20, 15, and 10   The two towers
> are about 150 ft apart. My SO2R setup is a pair of K3s driving a pair of
> Titan 425s. Soon after getting the second tower going,  by accident I
> noticed that I had both radios on 20CW, about 50 kHz apart, and the
> radios did not hear each other -- no clicks, no phase noise!  This is
> with 1.5kW output, and both receivers set to copy weak signals --
> attenuator off, preamp on!  Obviously, it matters where the antennas are
> pointed, and in this case, they were pointed to the east coast and the
> locations of the towers puts each antenna off the side of the other.
> I've since observed similar results on 15M and 10M during contests, and
> there are times when I'll have two radios on the same band with antennas
> pointed in different directions, one radio calling CQ, the other S&P
> (search and pounce) to find multipliers.
>
> 73, Jim K9YC
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