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Re: [TowerTalk] Remote switch

To: towertalk@contesting.com
Subject: Re: [TowerTalk] Remote switch
From: john@kk9a.com
Date: Fri, 25 Oct 2019 19:49:55 -0500
List-post: <mailto:towertalk@contesting.com>
I was referring to the StackMatch in N2IC's post, not a general antenna relay. A Stackmatch is generally used to split the TX/RX of a single radio to one, two or three Yagis while maintaining a 50 ohm input impedance.

John KK9A



David Gilbert AB7E wrote:

Why are you limiting the consideration to receive?  If you have more
than one rig (i.e., transmitter) in operation with remote switches
controlling which antenna goes to which rig, how happy would you be with
45 dB isolation (or less than 30 DB in the case of the RCS-4)? Even 100
watts relative to a dBm is 50 dB.

Dave   AB7E



On 10/25/2019 11:54 AM, john at kk9a.com wrote:
Does this mean if you have one beam aimed at the Caribbean and one on Europe and only the EU antenna is selected, you're still receiving stations on the Caribbean beam but 45dB weaker? Is this an issue?

John KK9A


Steve London n2ic wrote:

Measured a few switches I had laying around. Array Solutions 2 antenna
Stackmatch. 45 dB @ 14 MHz. Hmmm.

73,
Steve, N2IC

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