[Collins] WTD 75S series function switch

[Dr. Gerald N. Johnson]

List traffic is really slow, taking a week or more to be approved. Makes 
for much less traffic. I did have one request off list for vintage 
Collins rigs with absolutely no solid state wishing to be sure to 
survive EMP, but there isn't any thing for SSB without rectifiers if 
only seleniium. Working on gear for 24 GHz and for 10 GHz rover station 
testing, a presention to be be made in about 3 weeks at NLRS Aurora.

73, Jerry, K0CQ!

On 4/21/2013 7:12 PM, David Knepper wrote:
> Give an accounting of yourself, Dr. Jerry.  So good to hear you back on
> this wonderful Collins mail list.
>
>
> David Knepper, W3CRA/W3ST
> Collins Radio Association
> www.collinsra.com
> Join the CRA today
> Sign up for Yahoo Collins Group
>
> ----- Original Message ----- From: "Dr. Gerald N. Johnson"
> <geraldj at netins.net>
> To: <collins at mailman.qth.net>
> Sent: Saturday, April 13, 2013 2:29 PM
> Subject: Re: [Collins] WTD 75S series function switch
>
>
>> www.mouser.com/ProductDetail/CK-Components/A30405RNCQ/?qs=sGAEpiMZZMvNbjZ2WlReYqS7wnWG8l9OwI8KmhjE%2fho%3d
>>
>> is close. It has pc board pins instead of solder lugs, but has
>> contacts rated for 2.5 amps which should handle the AC decently. There
>> is a version listed at Mouser with solder lugs, but its not in stock,
>> this one is.
>>
>> There are several other smaller switches at Mouser, some with the
>> desirable shorting contacts, but they aren't good for the line current
>> and will have a short life, though their cost is small. It would be
>> best with one of them to add a relay for the line so the switch
>> contacts handled only the relay coil current.
>>
>> 73, Jerry, K0CQ, Technical Adviser to the Collins Radio Association
>>
>> On 4/13/2013 9:39 AM, Alan Chandler wrote:
>>> Looking for a replacement function switch for the 75S series. This is
>>> the
>>> OFF-STBY-OPR-CAL switch or even a good wafer.
>>>
>>>
>>>
>>> 73, Alan - K6RFK
>>>
>>>
>>>
>>>
>>
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