[ARC5] U.S. WW II equipment

[Scott Johnson]

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.  
>>> 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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