[ARC5] U.S. WW II equipment

[J. Forster]

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:
>>>>
>>>> >Â  ...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"Â
>>>> private air lines were doing the same routes very well, …
>>>>
>>>> I just read "Wind, Sand, and Stars" by Antoin de Saint Exuprey.Â
>>>> 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.  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.  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.  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.  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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>>
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