[TowerTalk] RF Relay QUestion

[Tim Duffy K3LR]

Great work Mike!

I looked at the relay specs and they look like they would work great for
1500 watts on all HF bands for an RF antenna switching application.

The model RTD14012F might even be better. SPDT with a 16A/240VAC rating.

The price is very good as well.

73!
Tim K3LR
http://www.k3lr.com
K3LR DX Cluster telnet://dx.k3lr.com


-----Original Message-----
From: towertalk-bounces at contesting.com
[mailto:towertalk-bounces at contesting.com] On Behalf Of Mike
Sent: Sunday, December 16, 2007 10:44 AM
To: David Gilbert; Dr. James C. Garland
Cc: TowerTalk at contesting.com
Subject: Re: [TowerTalk] RF Relay QUestion

Hello Dave,

The Tyco/Potter & Brumfield, RTB14012F, PCB relays work well for cold 
switching of HF RF.  Number are used here and handle 1500 W RTTY 
without a problem.  They're rated at 12 A, 240VAC.

At 12:50 AM 12/16/2007, David Gilbert wrote:

>It depends upon what your requirements are. If you don't care about
>isolation between selections and are switching at a point that always
>has low voltage (maybe at the base of a vertical or something), almost
>anything will work. I've used inexpensive high current automotive relays
>from places like Auto Zone for that sort of thing and they work fine.
>Most aren't really sealed, but they keep the dust out.
>
>On the other hand, if you want a relay rated for high voltage and good
>isolation, they don't come cheap from anyone. The ones that go into the
>better remote switches fall into that category.
>
>73,
>Dave AB7E
>
>
>
>Dr. James C. Garland wrote:
> > Does anybody know what kind of open frame relays Array Solutions (or
other
> > companies that make remote RF switches) are using?  I'd like to find a
> > relatively inexpensive open frame relay that can handle at least 
> 1.5kW (cold
> > switched only).  For long-term reliabilty, something rated at 3KW would
be
> > better.
> > Tnx and 73,
> > Jim W8ZR
> >
> >
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> >
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> >
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         73,
         Mike, K4GMH 
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