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Old July 19th 05, 07:27 PM
Rick Scott
 
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It could be, although I dont remember it specifically when I installed
coax on AF1 (1990). But that is Equivilant to Boeings BMS13-65.
Which is Coax for Satcoms.

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Old July 19th 05, 09:08 PM
Ham op
 
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Aw shucks! Truth destroys all the fun!

Rick Scott wrote:

It could be, although I dont remember it specifically when I installed
coax on AF1 (1990). But that is Equivilant to Boeings BMS13-65.
Which is Coax for Satcoms.


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Old July 19th 05, 11:48 PM
Reg Edwards
 
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It fits in well with the nonsense issued by the CIA and the USA and UK
governments about weapons of mass destruction. Although in this
isolated case it appears no lives have been lost in the London
Undergroud.
----
Reg.


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Old July 20th 05, 12:11 AM
Old Ed
 
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"...no lives have been lost in the London Undergroud (sic)..." ?!?

Well Reg, the reality factor of THIS comment is consistent with
that of your usual comments relating to terrorism, at least.

BTW, how IS life on Uranus? And how do you get that hallucinogenic
wine you talk about delivered way out there?

"Reg Edwards" wrote in message
...
It fits in well with the nonsense issued by the CIA and the USA and UK
governments about weapons of mass destruction. Although in this
isolated case it appears no lives have been lost in the London
Undergroud.
----
Reg.





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Old July 20th 05, 01:05 AM
Fred W4JLE
 
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Stick to antennas Reg.

"Reg Edwards" wrote in message
...
It fits in well with the nonsense issued by the CIA and the USA and UK
governments about weapons of mass destruction. Although in this
isolated case it appears no lives have been lost in the London
Undergroud.
----
Reg.






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Old July 20th 05, 12:50 AM
K7ITM
 
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Hank, try also googling 68999 coax and you'll get a little more. Is
there nothing you can identify as a manufacturer's name or logo?

You should be able to estimate the loss pretty accurately from the
size, and you should be able to measure the impedance with enough
accuracy for amateur use pretty easily. Resonance and physical length
will tell you the propagation velocity, if you need that.

I'd guess it to be Teflon-insulated and Teflon-jacketed. Does it
matter a whole lot for what you want to do with it?

Cheers,
Tom

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Old July 20th 05, 04:53 PM
Henry Kolesnik
 
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I called Times Microwave and got a spec sheet by email. It is exotic, 50
ohm high temp good to 200 deg. C. Attenuation is .55dB/100' @10 MHz and 5.8
dB @ 1 GHz. Double shield and center conductor are all silver covered,
dielec is Teflon and outer jacket is fluorinated ethylene propylene.
Operating voltage is 7KVRMS & strength is 12 KVRMS. VP is 76%. Neat stuff,
made special for Boeing. Thanks to all who helped

73
Hank WD5JFR
"Henry Kolesnik" wrote in message
.. .
At the OKC hamfest I got a piece of neat looking coax that is double
shielded with silver braid, with a sort of clear pink outer cover. It has
connectors so I don't know the thickness of the center conductor.
It's stamped with the following characters:
68999, AA-2831. 81205, 204-15578-1, AUGUST 1996

I asked the seller, an ex-Boeing employee about it and he said it's the
same kind as used in Air Force One. He couldn't recall the specs but said
it was Teflon, good to a Gig but he had used it outdoors. for 2 meters
and 440.

Can anyone tell me more or point me to a site?
tnx
--

73
Hank WD5JFR


I've tried to find the specs but get only one hit googling::
http://www.waea.org/tech/techdocs/SatSpec0798V1.doc

This site kind of confirms what the seller said.





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