[ARC5] U.S. WW II equipment

Wed Jul 3 07:56:32 EDT 2013

Wow. Can you send me a pic, please? I wonder if it's a missile unit.

-John

================

> Rotary, made by Oster.  Mid fifties vintage.
>
> -----Original Message-----
> From: J. Forster [mailto:jfor at quikus.com]
> Sent: Tuesday, July 02, 2013 8:32 PM
> To: Scott Johnson
> Cc: 'Sandy Blaize'; 'ARC-5 List'; 'Roy Morgan'
> Subject: RE: [ARC5] U.S. WW II equipment
>
> Solid state or rotary?
>
> -John
>
> ===============
>
>
>> I have a little (3" long, 1.5" dia) 6VA  inverter, draws less than an
>> amp of 26VDC, output is 26VAC 400Hz, wouldn't run much more than a
>> single synchro.
>>
>> Scott W7SVJ
>>
>> -----Original Message-----
>> From: arc5-bounces at mailman.qth.net
>> [mailto:arc5-bounces at mailman.qth.net]
>> On
>> Behalf Of J. Forster
>> Sent: Tuesday, July 02, 2013 8:08 AM
>> To: Sandy Blaize
>> Cc: ARC-5 List; Roy Morgan
>> Subject: Re: [ARC5] U.S. WW II equipment
>>
>> The smallest I've seen are about 2.5" OD and 5" long. And yes, 26/28
>> VAC @
>> 400 Hz is right AFAIR.
>>
>> -John
>>
>> =============
>>
>>
>>
>>> Also seems to me we used to call the tiny inverters that powered the
>>> instruments "Peanut inverters" as they looked more like tiny servoes.
>>> I think they supplied 28v at 400 Hz.
>>>
>>> 73,
>>>
>>> Sandy W5TVW
>>>
>>> That's been better than 60 years ago!  I must be getting old!
>>>
>>> -----Original Message-----
>>> From: J. Forster
>>> Sent: Monday, July 01, 2013 10:52 PM
>>> To: Mike Everette
>>> Cc: ARC-5 List ; Roy Morgan
>>> Subject: Re: [ARC5] U.S. WW II equipment
>>>
>>> The inverter was needed to power the loop indicator(s) and servo motor.
>>>
>>> -John
>>>
>>> ============
>>>
>>>
>>>> The only low plate voltage tubes in the ARN-6, as I recall, are the
>>>> 28D7.
>>>> The rest are normal 12 volt filament types like 12SG7, etc.
>>>>
>>>> And, the ARN-6 uses a vibrator to make high frequency AC for the
>>>> antenna and indicator selsyns.  Except it's not all that high; maybe
>>>> 130 cycles if I remember right.  It's been quite a while since I
>>>> worked on an ARN-6; but I remember that it was a darn fine radio...
>>>> much better than the ARN-7 which it replaced, despite being lower in
>>>> the nomenclature table.  And the
>>>> 6 was a whole lot smaller and lighter.  Plus, it didn't have that
>>>> screamin' meenie inverter to provide 115 volts at 400 cycles to run
>>>> the receiver!
>>>>
>>>> 73
>>>>
>>>> Mike
>>>> W4DSE
>>>>
>>>> --- On Mon, 7/1/13, Roy Morgan <k1lky at earthlink.net> wrote:
>>>>
>>>>> From: Roy Morgan <k1lky at earthlink.net>
>>>>> Subject: Re: [ARC5] U.S. WW II equipment
>>>>> To: "ARC-5 List" <arc5 at mailman.qth.net>
>>>>> Date: Monday, July 1, 2013, 5:19 PM
>>>>>
>>>>> On Jun 29, 2013, at 5:04 PM, gordon white <gewhite at crosslink.net>
>>>>> wrote:
>>>>>
>>>>> >Ã‚  ...the Air Corps in early 1933 ... fly the air
>>>>> mail in opencockpit biplanes in winter, and had a hard time finding
>>>>> Cleveland, while at the same time those terrible, "corrupt"Ã‚
>>>>> private air lines were doing the same routes very well, Ã¢â‚¬Â¦
>>>>>
>>>>> I just read "Wind, Sand, and Stars" by Antoin de Saint Exuprey.Ã‚
>>>>> He tells about the some 7 years in the 30's he was a pilot for the
>>>>> French mail service, flying in Europe through (between, not over)
>>>>> the Alps, and later to and across Africa.Ã‚  The reader can get a
>>>>> very strong sense of pride and admiration for the abilities,
>>>>> bravery, and suffering of those pilots and crew.
>>>>>
>>>>> He does not say what aircraft they flew, but does mention that they
>>>>> had no radios, and depended on lights at the landing fields to find
>>>>> their way in.Ã‚  They apparently had damned little survival
>>>>> supplies, according to the tale about how they flew into the ground
>>>>> in the desert, and walked out for 4 days with no water.Ã‚  They
>>>>> memorized every "stone and stream" of their routes in order to
>>>>> navigate.
>>>>>
>>>>> I have used dead reckoning to get back to the carrier from
>>>>> 150 miles away in the mid-Atlantic with all navigation aids and
>>>>> radios silent, the ARN-59 to find the beacon on Nantucket from the
>>>>> same distance at seat night, and Gulf Oil company maps to fly
>>>>> around New England on nice days.Ã‚  I can sympathize with the mail
>>>>> pilots trying to find Cleveland.
>>>>>
>>>>> Boat anchor content:
>>>>> The ARN-6 ADF radio used low plate voltage tubes, and ran entirely
>>>>> on 28 volts DC.
>>>>> Does anyone know of an on-line manual?
>>>>>
>>>>> Roy
>>>>>
>>>>> Roy Morgan
>>>>> k1lky at earthlink.net
>>>>> K1LKY Since 1958 - Keep 'em Glowing!
>>>>>
>>>>>
>>>>>
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