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Re: [Amps] Vacuum relays in Dentron MLA-2500

To: "Pete Smith" <n4zr@contesting.com>,"Vic Rosenthal" <vic@rakefet.com>
Subject: Re: [Amps] Vacuum relays in Dentron MLA-2500
From: R.Measures <r@somis.org>
Date: Sat, 27 Dec 2003 02:47:19 -0800
List-post: <mailto:amps@contesting.com>

>At 02:28 PM 12/26/03 -0800, Vic Rosenthal wrote:
>>See <http://www.somis.org/QSK922.html>, Rich Measures' article on vacuum 
>>relay QSK.  He uses a reed relay for the input and an RJ1A or HC-1 vacuum 
>>relay for the output.  I have used a similar circuit in at least three 
>>amplifiers so far, and it is ABSOLUTELY SILENT if you follow his advice to 
>>use silicon rubber to mount it and thin pieces of copper foil to make the 
>>leads.  Foil works better than braid, becasue the braid wicks solder and 
>>ends up rigid.
>
>
>Well, I'm perplexed.  My braid connections are not rigid, I used a small 
>vacuum relay for the input side, and absolutely silent is never a term I'd 
>use.  

**  Plastic-case transistors are pretty close.  

>Maybe I could have done something different, but it's hard to know 
>what....
>
**  Are the relays screwed/bolted direct to the chassis?
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