[ARC5] WTB: SCR-274N FT-221 and FT-229

Mark K3MSB mark.k3msb at gmail.com
Wed Sep 12 17:33:54 EDT 2018


T.O. 12R2-3SCR274-2 July 1956 uses the rack and the mounting.



AN 16-30ARC5-2   Dec 1954 uses mounting base.


Good to know;  I've heard "rack" and "rack mount" ever since i started
playing with Command Sets.....


73 Mark K3MSB

On Wed, Sep 12, 2018 at 8:27 AM, Michael Hanz <aaf-radio-1 at aafradio.org>
wrote:

> Interestingly enough, the manuals also have some slight official
> variations for the command set shock mounts as time went on.  T.O.
> 08-10-50, revised on February 15, 1943 calls it simply a "Mounting", or
> "shock-proof Mounting".  The AN/ARC-5 manual calls it a "Mounting Base".  I
> usually call it a shock mount because it includes the operative word
> describing the rubber shocks and thus avoids confusion, but KK5F's caution
> is well reasoned - nowhere that I can find is the mount ever called a rack
> except in a longer explanation describing its purpose.
> -Mike  KC4TOS
>
>
> On 9/11/2018 11:15 PM, Mike Morrow wrote:
>
>> Yes rack mount = shock mount.
>>>
>> Absolutely not.
>>
>> The FT-220 is the 3 RX Rack into which the receivers are mated.
>>>
>> Officially, that's designated "Rack, FT-220-A".
>>
>> The FT-221 is the rack mount (shock mount) that is bolted
>>> to the airframe.
>>>
>> Officially, that's designated "Mount, FT-221-A".
>>
>> One may certainly invent his own non-conventional designations and
>> descriptions for anything he wishes, but that welcomes the confusion
>> exactly as this thread has shown. :-)
>>
>> Mike / KK5F
>>
>
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