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Re: [Amps] Vacuum relay adjustment?

To: "N3XX" <>, <>
Subject: Re: [Amps] Vacuum relay adjustment?
From: "Bob Maser" <>
Date: Wed, 10 Sep 2008 19:39:59 -0400
List-post: <">>
That's the screw that secures the coil into the body.  It has no 
adjustability.  If your relay is sticking, it has probably "hot switched". 
I suggest that you replace the relay and verify that the sequencing of the 
relays in you LK800 is correct.  This means that the output relay "makes" 
and has quit bouncing BEFORE the input relay.

Bob  W6TR
----- Original Message ----- 
From: "N3XX" <>
To: <>
Sent: Wednesday, September 10, 2008 7:23 PM
Subject: [Amps] Vacuum relay adjustment?

> Hope someone on the list can help with information about a vacuum relay I
> have.  I'm working on getting an LK-800 amp back in good working 
> condition,
> and one of the problems it has is a T/R vacuum relay that won't go back to
> receive after transmitting.  If I tap on the relay, it does go back to
> receive.  The relay is a Jennings RJ1A-26S.  On this relay is a screw that
> looks as if it is for adjustment, but I don't know what it adjusts.  I'm
> guessing it has to be either contact spacing or spring tension.  I hope 
> it's
> for spring tension, and by adjusting this screw I can put a little more
> tension on the spring, and it will return to receive when finished
> transmitting.
> Just thought I would check here and see if someone knows what the screw is
> for before I start turning it, not knowing what it is supposed to do.
> Thanks for any info.
> 73,
> Tim - N3XX
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