[Milsurplus] Re: Milsurplus Digest, Vol 28, Issue 18

[Brooke Clarke]

Hi Breck:

It's my understanding that a loop does not work very well when sky wave 
signals are being received.  The Watson-Watt set of 4 vertical dipoles 
works much better.  So any W.W. II vintage aircraft DF system in the 3 - 
30 Mhz range would need be be based on an antenna system that's not very 
compatible with aircraft.

Modern aircraft use HF time of arrival DF methods for this frequency 
range, like those made by TCI, and the antennas can be completely unseen.

Have Fun,

Brooke Clarke, N6GCE

-- 
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>Date: Wed, 16 Aug 2006 09:58:03 -0400
>From: "B. Smith" <smithab11 at comcast.net>
>Subject: [Milsurplus] Aircraft HF  DF capabilities
>To: "milsurplus" <milsurplus at mailman.qth.net>
>Message-ID: <000501c6c13b$ff044920$3b19c847 at HAL1000>
>Content-Type: text/plain; format=flowed; charset="Windows-1252";
>	reply-type=original
>
>DF capabilities
>
>Does anyone know of any WWII aircraft receiver or receiver system that had 
>airborne Direction Finding (DF) capabilities in the   3.0 to 18 Mcs ranges. 
>Using either automatic or manual antenna operation.
>
>I am currently working on a fairly  precise homebrew copy of the British 
>Type 3 DF antenna  and using it with the R1155A receiver.  The R1155 manuals 
>states that the receiver can be used on the higher HF frequencies mentioned 
>above as well as the normal navigation frequencies  1600 Kcs and below.
>
>breck k4che 
>