Date: Sun, 17 Apr 2016 06:40:04 -0500
From: 'DGB' <ns9i2016@Bayland.net>
To: towertalk@contesting.com
Subject: Re: [TowerTalk] Ameritron remote coax switch ?
I have three RCS-4. Thru the coax switching, never a failure in 4 yrs
with legal limit. Really nice not having to run control cables. one is
250 ft. from the shack.
73 Dwight NS9I
## IF you DON’T require a 2 x 6 switch, like the array solutions 6 pack,
and only require something like a 1 in and 4-10 out switch, this can easily be
done
via relays...and by using a SPDT type, will ensure that all the un-used ants
are grounded.
## To make them a lot more reliable, use DPDT relays, with contacts in
parallel.
That will double the current rating, quadruple the power rating, and provide
for
redundant contacts. Ok, now you can safely install the remote switch box at
the top
of the tower.....and save on coax.
## another option is to use ceramic vac relays. If its just 2 x ants you
want to toggle between,
say 2 x yagis...a single SPDT will work just fine...but will not allow for
the unused ants to be grounded.
## To do that, a SPDT vac relay could be used, one for each port. Vac relays
work great for this application.
You never have issues with contacts going open etc, extremely reliable.
Jim VE7RF
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