This link shows a pic of the Array Solutions 4-square box. It looks like they
are using fairly large open-frames relays. Maybe this will give you some ideas.
73, Stew K3ND
--- On Wed, 3/25/09, dan edwards <w5xz@att.net> wrote:
> From: dan edwards <w5xz@att.net>
> Subject: [TowerTalk] 4 square switching relays
> To: towertalk@contesting.com
> Date: Wednesday, March 25, 2009, 1:27 PM
> for the other guys who like to 'roll their own'
>
> what do people use to switch the elements around the horn?
>
> i have a wiring diagram i like, but the relay choice is
> my inquiry.
>
> 3 DPDT open frame relays with 12-24 v dc coils? contacts
> good for ??? amps for 1.5 kw service? insulation good
> enough for 1.5 kw of RF from an amp tuned for the wrong
> frequency band? (like when you're 30 hrs into a 48 hr
> dx
> contest, short-handed, listening on a separate rx antenna)
>
> or do these all need to be vacuum relay$?
>
> 73, Dan, W5XZ
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