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Re: [Amps] SB220 QSK bias and RF relay mounting

To: amps@contesting.com
Subject: Re: [Amps] SB220 QSK bias and RF relay mounting
From: Warren Volz <warren@warrenvolz.com>
Date: Wed, 21 Sep 2016 17:44:14 -0600
List-post: <amps@contesting.com">mailto:amps@contesting.com>
Louis Gary and John,

Thanks for your words of wisdom. Your responses have helped put me on the right 
track. Now if I can only get over drilling holes in the chassis…

Below is a link to a photo of where I think it fits but my next question is if 
it’s too close to the filament choke:

https://magicchef.zapto.org/owncloud/index.php/s/7C6U5Hn5BTOo67O

If it’s current location is ok it will only require drilling one additional 
hole. Next task will be mounting the W7RY QSK board which I believe I have a 
place for.

-Warren

> On Sep 18, 2016, at 2:37 PM, John Lyles <jtml@losalamos.com> wrote:
> 
> Its been a long time since I replaced the open frame power relay in mine and 
> installed a vac relay for output and small RF relay for input switching. I 
> removed the OEM relay and mounted it in that general area using the same RG8 
> pigtails that supplied RF to the OEM relay. I believe I made a small vector 
> board to hold mine, but its been over 20 years and I didn't take photos 
> unfortunately. I would not suggest moving the QSK board anywhere near the 
> output circuit above the deck. Hot glue or RTV doesn't sound like a long term 
> solution, as if it every comes loose, expect fireworks when it falls onto the 
> bottom cover. If you can, use the screw holes for the OEM relay to mount the 
> assembly.
> 73
> John
> K5PRO
> 
> 
>>> I?ve got a SB220 thats been on the bench since last year. It?s
>> nearing completion but I have a few remaining items left. One of the
>> last is finding a place for the W7RY QSK board and a pair of vacuum
>> relays I found on eBay. I?m looking for some guidance on the best
>> location for mounting the relays. They came in a nice bracket but
>> IcanTMt seem to find a good orientation. There are some phots online
>> but not many that show dual relays. Any guidance/photos from the
>> group would be very much appreciated. Related, I assume using some
>> kind of glue (silicon ahesive) instead of drilling holes would be
>> ok?
>>> >
>>> > -Warren
> 
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