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Re: Topband: 75 ohm coax switch

To: topband@contesting.com
Subject: Re: Topband: 75 ohm coax switch
From: Herbert Schoenbohm <herbert.schoenbohm@gmail.com>
Date: Mon, 20 Apr 2015 15:26:52 -0400
List-post: <topband@contesting.com">mailto:topband@contesting.com>
Yes....Find on eBay an old passive video switch like the ones made by Dynair. (1x6 or 1x12) Not only are they designed for 75 Ohms they terminate all unused feedlines (RG6) with a 75 ohm resistor. This is especially important when using two wire Beverages while trying to make the feedlines to each a multiples of a half wave (minus the VF depending on whether or not it is RG-59 or RG-6 foam.) which puts the termination electrically back at the feed box for better performance.


Herb Schoenbohm, KV4FZ

On 4/20/2015 12:05 PM, Art Snapper wrote:
What do you use for switching your receive antennas?

I have been adapting the RG-6's F connectors, to PL-259s to use a regular
ham coax switch.

The 75 ohm (TV) type switches show a minimum frequency of 5MHz.

Is there a better solution?

Art NK8X
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