[ARC5] AN/CRC-7 and Gliders - Part 2

[J. Forster]

Does anyone know if it was one glider per tug? I seem to remember there
were several, liks ducks in a row.

-John

===========


> The AN/CRC-7 was carried in Army Air Forces B-29s in the Pacific.  It is
> described in an operational crew training manual which was reprinted in
> hardback form some years ago (early 1990s): I own a copy of this but can't
> put my hands on it at the moment.  When I find it, I'll post the
> information.
>
> If anyone has a copy of the ROIF (Radio Operator's Information File), it
> might even be described in that manual.  I haven't seen the ROIF, but I
> clearly remember the CRC-7 being referred to in the B-29 training manual.
> I can't say whether it may have been carried in other aircraft.
>
> 73
>
> Mike
> W4DSE
>
> --- On Wed, 5/29/13, Mike Morrow <kk5f at earthlink.net> wrote:
>
>> From: Mike Morrow <kk5f at earthlink.net>
>> Subject: Re: [ARC5] AN/CRC-7 and Gliders - Part 2
>> To: arc5 at mailman.qth.net
>> Date: Wednesday, May 29, 2013, 12:09 AM
>> I wrote:
>>
>> > The AN/CRC-7 wasn't AFAIK, available while WWII was in
>> progress.
>> > In addition, it is a US Navy set, not an Army
>> set.  That makes a
>> > difference.
>>
>> It's also worth noting the the AN/CRC-7 electronics section
>> (with
>> four tubes) is a hermetically-sealed (with solder!) unit
>> that was
>> manufactured with an enclosed crystal for 140.58 MHz
>> operation.
>> The crystal is wired into the base of the oscillator plate
>> coil
>> in the sealed section.  Changing frequency of
>> operation, even any
>> actual electronic maintenance other than changing the
>> battery
>> (which is outside the solder-sealed section) was never
>> intended.
>> The AN/CRC-7 is a unit intended for all time to be operated
>> only
>> on the 140.58 MHz established at time of manufacture.
>>
>> It would have been a very poor choice for glider service,
>> even
>> if the US Army had these Navy sets in 1944 (which they did
>> not).
>>
>> Mike / KK5F
>>
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