[Milsurplus] aircraft antenna

[Mike Hanz]

It's a Dyson AM06 10" desk fan rigged to add thrust to the aircraft.

More seriously, I have seen those as well, but I thought they were 
postwar civilian products.  As long as there was an insulated gap in the 
aluminum airfoil over the loop (at the bottom apparently on that model) 
and a cavity through which numerous turns of insulated wire could be 
run, it should work as well as the usual aluminum tube electrostatically 
shielded loops used for LF work today. Seems like the small size 
certainly reduces its sensitivity compared to the 20" and greater 
diameter normally used.

The Fairchild loop antenna detailed at the bottom of 
http://aafradio.org/flightdeck/1935/SCR-AE-183.html was in fact produced 
in two versions - one for small aircraft where you needed to slew the 
entire aircraft to home on a station - so it seems to have been an 
accepted technique where you didn't have the room for a radio operator.

  - Mike  KC4TOS

On 4/27/2015 3:05 PM, Taigh Ramey wrote:
> I have a customer who has one on his Twin Beech. I think it was put there
> for show as it is mounted metal top metal. I haven't seen one before either
> and I wondered how it worked being all aluminum. In the film it looks like
> it was insulated from the fuselage and I presume you just turn the aircraft
> to home in on the station. What ADF would it have been used with?
>
> Taigh
>
> Taigh Ramey
> Vintage Aircraft Inc.
> 7432 C.E.Dixon Street
> Stockton, California 95206
> (209) 982-0273
> (209) 982-4832 Fax
> www.twinbeech.com
> KEEP 'EM FLYING...FOR HISTORY!
>
> -----Original Message-----
> From: Milsurplus [mailto:milsurplus-bounces at mailman.qth.net] On Behalf Of
> Larry
> Sent: Sunday, April 26, 2015 10:31 AM
> To: milsurplus at mailman.qth.net
> Subject: [Milsurplus] afct antenna
>
> http://imageevent.com/okbueno/mopic;jsessionid=h3xbdtmij2.camel_s?p=54&n=1&m
> =-1&c=10&l=0&w=4&s=0&z=2
>
> At the clock time shown on the film of 01:35:28 behind the canopy on this
> RF-51D you see a loop antenna for the?  Don't recall seeing anything like
> this one before.  Any ideas of it's nomenclature or does anyone have one?
> Wonder if they were particular to the RF-51 model as it was a recon type.
>
> Larry
> W0OGH
>
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