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Re: [CQ-Contest] PJ4G ARRL DX SSB Recording by N2IC

To: cq-contest@contesting.com
Subject: Re: [CQ-Contest] PJ4G ARRL DX SSB Recording by N2IC
From: Jim Brown <k9yc@audiosystemsgroup.com>
Reply-to: k9yc@arrl.net
Date: Mon, 13 Mar 2017 10:49:55 -0700
List-post: <cq-contest@contesting.com">mailto:cq-contest@contesting.com>
On Sun,3/12/2017 8:56 PM, Jeff Clarke wrote:
This answers the question some people had on how you can have two stations on the same band without much interference.

It also helps to have very clean transmitters and amps with bullet-proof front ends. I'm lucky enough to have two towers 200 ft apart, one with a 3-el SteppIR, the other with monobanders for 20 and 15, with a line between the towers perpendicular to the east coast. When pointed to that way, their elements are approximately inline. By accident, after adding the second tower 4-5 years ago, I discovered that I could have both radios on 20M within about 60 kHz of each other and not have QRM between them. I run K3s to Ten Tec Titan tube amps at legal limit. And that's with the ORIGINAL K3s, before the new synth boards, which I added a year or so ago. I'm also able to run both radios on 10M, one CW and one SSB, for the 10M contest with another short tower that's not quite as well located. Pointing one antenna at the other produces a VERY different result. :)

I've operated with Jeff and John from that station, and crawled through the brush to help rig Beverages. I agree that the antenna farm I saw is clearly legal within the rules, and that it would not be difficult to rig something comparable for the higher bands. And FWIW, when I first moved here 10 years ago, I had only fan dipoles for 20/15/10 and found, again by accident, that my 550 ft EU/VK Beverage heard EU pretty well on 20M.

73, Jim K9YC

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