[Milsurplus] Low power DFing

[Hue Miller]

----- Original Message ----- 
From: "aGEnuine Ham" <gl4d21a at juno.com>
To: <RAFANTINI at salisbury.edu>
Cc: <milsurplus at mailman.qth.net>
Sent: Monday, June 28, 2004 7:19 PM
Subject: Re: [Milsurplus] Low power DFing

> Now, as far as weak signal DFing is concerned, consider this:  Accurate
> bearings require use of the null method, because nulls are sharper than
> peaks by their nature.  On the other hand, general seek direction can be
> accomplished very nicely using the peak of an appropriately designed
> system, which will get you close enough to then switch to null use.  I
> don't know of any production systems which do this, but I sure used it
> plenty of times on 75 M transmitter hunts back in the 50s.
> 
> 73,
> George
> W5VPQ

Can you explain this for me a little? Did you use this technique because the
low level signal was too much in the noise level for easy solid nulling?
Otherwise i don't understand why you would not rely on nulling for the whole
hunt process. Partly my curiousity is because the "official" Navy procedure,
IF i recall from the DU manual, is to null, get the bearing down, then switch to
"D" direction and determine which null is correct.
Tnx-  - Hue Miller