[CQ-Contest] Antenna Switch Relay Inquiry

[Cooper Stewart]

I used octal mounted round-base 12v power relays (from Maplin in the UK):
Max current: 10A
Max switching power: 2400v
Contact resistance: <50mohm
etc, etc.
They cost about 5gbp for the relay and 2.50gbp for the base. I have 10 in my
SO2R antenna switch box and they work great.

Stewart
GM4AFF/GM0F

-----Original Message-----
From: Mark, WT6P [mailto:WT6P at home.com]
Sent: 04 October 2001 14:45
To: CQ-Contest at contesting.com
Subject: [CQ-Contest] Antenna Switch Relay Inquiry



Hello all,

I am interested in building a multi-antenna switch, similar to the one in
the ARRL 2001 Handbook.  I have tried to find the relay used in the article,
but can't.

I know someone has built something like this.

Finally, the question...What contact rating should I be looking for?  I want
to build it to handle 1500 watts (future plans!).  This will NOT be hot
switched, only used with a band decoder to select antenna, then run RF
through after contact closure.  I will be driving the relay with 12vdc.

Thanks in advance for any assistance you all might lend...

Best 73
Mark, WT6P
Sacramento, CA


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