[ARC5] Ceramic Beads

[Michael Hanz]

They are IN-83 beads, Craig.  From my web page on insulators 
(http://aafradio.org/docs/aircraft_antenna_insulators.html ):

IN-83 is a Signal Corps designation, and is 5/16" in diameter, 48 beads 
per foot, which is about 1/4" long nested in the next bead.

Man, 500 seems a lot for an aircraft the size of the AT-21, but I'm sure 
you've done the measurements.  Even with the two ART-13's in the Enola 
Gay, I don't think we had more than maybe 7-8 feet.  They designed the 
runs to get the RF out of the shack and through the fuselage as directly 
as possible.  I'm assuming you are just using them for the Liason 
transmitter.

   Hope that helps,
  - Mike  KC4TOS

On 5/23/2018 3:18 PM, Craig wrote:
>
> I think the FS beads here are the correct size, but I can't remember 
> for sure and I can't lay my hands on the few I have to measure right 
> now. I need to order at least 500 for the airplane.
>
> https://www.omega.com/pptst/SH_DH_FS_OV.html#order
>
> Craig
>
> KF5JOT
>
> Fairchild AT-21-BA
>
> On 05/23/2018 08:10 AM, Jay Coward via ARC5 wrote:
>> Google "fish spine beads".
>> Jay KE6PPF
>>
>>
>> -----Original Message-----
>> From: Mark K3MSB <mark.k3msb at gmail.com>
>> To: ARC5 <arc5 at mailman.qth.net>
>> Sent: Tue, May 22, 2018 4:37 pm
>> Subject: [ARC5] Ceramic Beads
>>
>> Hi Guys
>> I had the source for some ceramic beads that I could use on the bare 
>> wires on my SCR-274N system, but I have lost the info.
>> Recommendations?
>> 73 Mark K3MSB
>>

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