[Milsurplus] [ARC5] DAG HFDF Sense Antenna.

[Kenneth G. Gordon]

On 1 Apr 2021 at 21:24, David Stinson wrote:

> Does anyone have or know of this sense antenna?
> It is the only piece missing from my DAG.
> I would pay or trade well for it.
> 
> TNX ES 73 DE Dave AB5S

Dave: Many years ago, I received a brand new DAG-1, with all accessories, from the MARS 
program. That receiver was excellent. I thoroughly enjoyed using it. It was very quiet and 
sensitive. It was beautifully made.

I gave it away along with a lot of other stuff, when I left Missoula, Montana. As is usually the 
case, I wish I still had it.

As I remember it, the sense antenna was simply one of those extendable whip-type antennas 
with a large male "pin" soldered into the end of it. The pin was a larger version of those 
"compressible" types which fit into a socket.

It wasn't all that hard to make one, if you didn't have the original one.

The 180 degree ambiguity is impossible to resolve without that sense antenna, BTW. I found 
that the DAG-1 worked very, very well for DFing.

Frequency coverage, as I remember it, was somewhat below the BC band to 18 MHz.

It had a BFO which exhibited good injection, but the receiver was somewhat susceptible to 
instability by mechanical shock.

I have watched for one to show up on that auction place, but so far, have never yet seen one.

I suspect that not too many were built.

Ken W7EKB