In the shack, some video switches are OK. Be careful. Many switches have
active components and/or are pretty poor up high in frequency.
I'm not sure about modern manual CATV or MATV antenna switches, I've seen
them up to 4 way years ago, and they are usually much better.
Personally, I use relays with a desk mounted control. Saves having multiple
heavy wires on the desk.
160 is pretty forgiving for switch construction, provided the shields are
all well grounded to a common shield plate. Do NOT switch the shields!! Just
switch the centers.
----- Original Message -----
From: "Art Snapper" <art@nk8x.net>
To: "Tom W8JI" <w8ji@w8ji.com>
Cc: "160" <topband@contesting.com>
Sent: Monday, April 20, 2015 6:57 PM
Subject: Re: Topband: 75 ohm coax switch
Thanks everone for the ideas. I hadn't thought of the Dynair video switch.
Access to useful information is why I joined this group - and haven't been
disappointed.
Tom, receive switching will be in the shack. I have 4 antennas on the
mechanical switch now, but anticipate 6 before winter or divorce. :)
Art
On Mon, Apr 20, 2015 at 5:37 PM, Tom W8JI <w8ji@w8ji.com> wrote:
Most TV switches work to DC, even if they say 5 MHz.
There are many switches around. How many positions, and is this indoors
or
outdoors??
----- Original Message ----- From: "Art Snapper" <art@nk8x.net>
To: "160" <topband@contesting.com>
Sent: Monday, April 20, 2015 12:05 PM
Subject: Topband: 75 ohm coax switch
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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