[RFI] Shielded vs unshielded loops - difference

[Tom Thompson]

Ken,

I wouldn't worry too much about the balun.  I think you will find the 
DFing very easy with a little practice.  I am glad Larry was able to 
help you.  He is a very sharp engineer and has done a lot of transmitter 
hunts.

Tom


On 3/29/2014 10:06 AM, Kenneth G. Gordon wrote:
> On 28 Mar 2014 at 23:41, Tom Thompson wrote:
>
>> Ken,
>>
>> The balun is just several turns of the coax through the #43 ferrite core
>> material.
>>
>> Tom
> Thanks, Tom. I had considered doing what I did many years ago when I was doing phone
> patching for AFMARS into Vietnam: winding the coax feeding the antenna into a several-turn
> tight coil and tye-wrapping it tight.
>
> Your method is much better.
>
> The only reason I probably won't use it this time is that I don't have a ferrite core, and I am in
> a hurry. ;-)
>
> Also, I want to publicly thank Larry Benko for his very, very helpful telephone call to me
> yesterday. Thanks, Larry.
>
> Despite my over 60 year career in electronics (first licensed in 1956 when I was still 13), I
> have never yet done any DFing. Although I knew the principles, as Larry told me, it takes
> practice.
>
> So... I am now practicing.
>
> vy 73,
>
> Ken W7EKB
>