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Re: [Amps] ALPHA77 Relay

Subject: Re: [Amps] ALPHA77 Relay
From: R.Measures <>
Date: Mon, 26 Jan 2004 03:13:38 -0800
List-post: <>

>Had problems with the reed relay staying in TX position during CQ160M test.
>SO gotta fix it REAL soon.  Has anyone replaced the reed relay with a vac

**  The Matsushita/Panasonic type-RSD  SPDT RF reed-relay is quicker 
(1-mS make/break) , quieter, smaller, and not as costly as a vacuum 
relay.   We carry these for retrofitting older amplifiers with high-speed 
switching so that they will not hot-switch with modern radios.  Our part 
# is 44.5 and the cost is $11 plus $1 for postage.  The coil requirement 
is 14mA at 12v, so a shunt resistor across the coil is typically needed 
to limit current when an RSD is connected in series with a vacuum relay.  
--   Say the word and I will put one in the mail to you this morning when 
I go to the post office.  You can pay from the invoice.  


>Does anyone know of a replacement reed relay?  I have not been able
>to locate a replacement reed on commercial market or would have replaced it.
>I will call factory Monday am to see any available from them.
>73 de Arne N7KA
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