Re: Urban stealth HF: Inside-the-backpack loop

[Edward R Cole]

"Shades of WWII spy movies" with the german's sniffing RF with
rotating loops on top of a small van!

Great idea!  Better Rx antennas, of course.  I have plans to make a 6
or 8 foot loop out of some old 1/2 inch heliax cable (1/2 inch copper
shield) to try on 630m for Rx. One foot loop on 14-MHz is
comparable.  And if anyone were to ask what you are doing: "just
tracking deer or bengal tigers"!

73, Ed - KL7UW
   http://www.kl7uw.com
Dubus-NA Business mail:
   [hidden email]

______________________________________________________________
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:[hidden email]

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to [hidden email]

[Phil Kane-2]

On 1/22/2019 6:03 PM, Edward R Cole wrote:

> "Shades of WWII spy movies" with the german's sniffing RF with rotating
> loops on top of a small van!

That system - called the Finch loop in the US - was used by most if not
all radio enforcement administrations world-wide in some version or
other until well into the 1970s.

73 de K2ASP - Phil Kane
Elecraft K2/100   s/n 5402

From a Clearing in the Silicon Forest
Beaverton (Washington County) Oregon
______________________________________________________________
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:[hidden email]

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to [hidden email]