[Milsurplus] L.O. radiation

[Ben Dover]

Related...

I keep hearing stories about "Spookies" (gunships) during Vietnam
D/F ing truck ignition systems on the Ho Chi Minh Trail to make
night attacks...  they'd be boogying along and suddenly "Puff the
Magic Dragon" shows up!

Tom, W9LBB


At 08:07 PM 2/13/2006 -0500, you wrote:
>I just came across this ad in a 1943 issue of the "Proceedings of the
I.R.E." (Institute of Radio
>Engineers) and thought it might be relevant to the topic:
>http://coldwar-c4i.net/Other/ProcIRE-43-Aug-8A1.html
>
>Albert LaFrance
>
>----- Original Message ----- 
>From: "J. Forster" <jfor at quik.com>
>To: "Richard Brunner" <rbrunner at gis.net>
>Cc: <milsurplus at mailman.qth.net>
>Sent: Tuesday, March 22, 2005 8:03 PM
>Subject: Re: [Milsurplus] L.O. radiation
>
>
>> This afternoon, I had a chance to chat with a ex-Navy Airborne Radar
Tech who
>> trained for the Pacific theater, but the war ended just as he was about
to ship
>> out, and I asked him about the LO business.
>>
>> He confirmed that airplanes were electrically noisy, especially the
engines and
>> magnetos, despite the shielding. He was also unaware of any real effort
to DF
>> ships by their LO emissions, but commented that the Germans and Japanese
were
>> VERY good at DFing clandestine transmitters (coast watchers, for example).
>>
>> His opinion is that the LO DFing is largely a myth to cover up the
cracking of
>> Enigma and Purple Ciphers and also microwave radar. (He was trained on X
band
>> search radars), Also, until about 1943, subs had to surface to recharge
their
>> batteries and made good radar targets. X band was important because the
Germans
>> had no X band warning receivers, so the airplanes could sneak up on them.
>>
>> -John
>
>
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