[TowerTalk] Ameritron remote coax switch ?

[Bob K6UJ]

Jim,

Would it be possible to replace the relays in the RCS-4 with vacuum relays ?
Probably not enough room ?

Bob
K6UJ

On 4/18/16 6:22 AM, Jim Thomson wrote:
> Date: Sun, 17 Apr 2016 06:40:04 -0500
> From: 'DGB' <ns9i2016 at Bayland.net>
> To: towertalk at 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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