[Milsurplus] ARB Receiver Questions

[J. Forster]

Thank you,
-John

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


> A better one that I cleaned up is at the bottom of
> http://aafradio.org/docs/atb-arb.html
>
> 73,
> Mike  KC4TOS
>
> Al Klase wrote:
>> There a crummy schiz here:  http://nj7p.org/millist/sch/arb.gif
>>
>> The 991 is a neon bulb, without an internal series resistor.  RCA used
>> this as voltage regulators in ARB, BC-348, and possibly others.  It's
>> the component connected to the 12AS7 screen grid in the schematic, and
>> stabilizes the local oscillator.  You could replace it with about 60
>> volts of Zener diodes.  Radio will probably work without it, but could
>> be drifty.
>>
>> Gotta run,
>> Al
>>
>> On 1/15/2010 9:01 PM, J. Forster wrote:
>>
>>> Hi,
>>>
>>> Does anybody have a link for a good schematic of the ARB Receiver? I
>>> cannot access my manuals at the moment.
>>>
>>> Basically, I'm most interested in the two-pin bayonet lamp socket in
>>> the
>>> Rx. I'd really like to know what belongs in that socket. It's marked
>>> 991
>>> BTW.
>>>
>>> Thanks in advance,
>>>
>>> -John
>>>
>>> ==============
>>>
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>>
>
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