[ARC5] FW: Jeeps with Radio Equipment

[Paul Thekan]

The stock WW2 jeep was 6 volt system.
Willys MB used a PTO 12v gen mounted between the seats and two 6 volt
batteries in series in the back of the jeep to get 12 volts . Ford GPW
converted the entire electrical to 12 replacing the 6 v generator under the
hood with a 12v gen and a battery box between the seats with two 6v
batteries to get 12 volts.

 I'm not sure what the power set up was on the the jeep that was pictured
or how they would have have got 28v to run the radios unless there were a
couple of 12v batteries in series stowed away in the back.

 I'd seen a photo of what I think was a WW2 ARC 5 set up with an LM freq
meter in the back of a jeep at what I guess was a Navy airfield. And there
was someone operating the radios.

Paul
N6FEG

On Fri, Jul 30, 2021, 10:02 AM Tim <timsamm at gmail.com> wrote:

> As others have suggested, I am going with the jeep having a 24 volt
> battery system aboard.  Easier to scrounge up extra batteries than to go
> thru a significant equipment modification out at the end of the logistics
> pipeline like that place apparently was...
> Tim
> N6CC
>
> On Fri, Jul 30, 2021 at 9:52 AM <ke5o at sbcglobal.net> wrote:
>
>> I am not seeing the PTO generator so where is the 12 volts coming from? I
>> would guess the jeep has 24 volts in batteries under the radios that are
>> charged with an APU.
>>
>>
>>
>> Steve G
>>
>>
>>
>> Ke5o
>>
>>
>>
>> *From:* arc5-bounces at mailman.qth.net <arc5-bounces at mailman.qth.net> *On
>> Behalf Of *MARK DORNEY via ARC5
>> *Sent:* Friday, July 30, 2021 10:38 AM
>> *To:* Dave Merrill <r390a.urr at gmail.com>
>> *Cc:* ARC-5 <arc5 at mailman.qth.net>
>> *Subject:* Re: [ARC5] Jeeps with Radio Equipment
>>
>>
>>
>> The radios may not be ARC-5, SRC-274 or ARA radios. They may be an
>> earlier look-a-like that ran on 12 volts. Either that, or parts were
>> scrounged and radios were heavily modified. As far as meeting AAC limits,
>> that may not have really mattered. These were definitely not built to some
>> factory spec in this application. All that mattered is that they work and
>> fill a mission need.
>>
>>
>>
>> Mark D.
>>
>> WW2RDO
>>
>> “In matters of style, float with the current. In matters of Principle,
>> stand like a rock. “.   -   Thomas Jefferson
>>
>>
>>
>> Sent from my iPhone
>>
>>
>>
>> On Jul 30, 2021, at 11:26 AM, Dave Merrill <r390a.urr at gmail.com> wrote:
>>
>> 
>>
>> I could see rewiring the filaments for 12 VDC, but what about the relays?
>> Aren't they all 28 VDC?
>>
>>
>>
>> Dave N9ZC
>>
>>
>>
>> On Thu, Jul 29, 2021, 12:41 AM Bill Pileggi <wpileggi at juno.com> wrote:
>>
>> Slightly over 10 years ago (June 2011) , there was a mention on this list
>> of a photo of a Jeep with ARC's in the rear deck. At the time, they would
>> have provided a link. Don't know what the link is now... Nobody seems to
>> have brought it up... As a bonus, there's a B-24 in the background.
>>
>> So, I'm attaching. It's about 89 Kb.
>>
>> Bill KA3AIS
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