Topband: Locating Problem Signals

[Joe]

Did we ever find out for sure what and where that was?

Joe WB9SBD
Sig
The Original Rolling Ball Clock
Idle Tyme
Idle-Tyme.com
http://www.idle-tyme.com
On 2/9/2019 11:48 AM, donovanf at starpower.net wrote:
> Simple TDoA techniques are useful for direction finding on
> non-ionospheric propagation modes, but TDoA-only DF techniques
> are very unreliable for ionospherically propagated signals
>
>
> A recent example is the intruder that was continuously active on
> 14.000 MHz for several days. Operators on the Kiwi TDoA
> network were convinced that the intruder was definitely located in
> Indiana. The Kiwi DF network was off by more than 1000 miles...
>
>
> An informal network of hams using simple 20 meter Yagi
> was much more accurate.
>
>
> 73
> Frank
> W3LPL
>
>
> ----- Original Message -----
>
> From: "Dick Bingham" <dick.bingham at gmail.com>
> To: "Topband" <topband at contesting.com>
> Sent: Saturday, February 9, 2019 5:19:06 PM
> Subject: Topband: Locating Problem Signals
>
> If I remember correctly, there have been requests here for folks to listen
> to an offending signal so its location can be determined.
>
> There is a fairly inexpensive way to accomplish this task using a ~$200
> "0-to-30MHz SDR" called "Kiwi". One of its operating modes includes TDoA
> measurements using multiple Kiwi's located around the USA/world.
>
> Check-out ==> *https://valentfx.com/vanilla/discussion/1196/tdoa-extension-operating-notes#latest
> <https://valentfx.com/vanilla/discussion/1196/tdoa-extension-operating-notes#latest>
> *
> and ===> * http://kiwisdr.com/ks/using_Kiwi.html
> <http://kiwisdr.com/ks/using_Kiwi.html>*
> You can use one of these Kiwi's by checking here ===>
> *http://kiwisdr.com/ks/using_Kiwi.html
> <http://kiwisdr.com/ks/using_Kiwi.html>*
> Contact me off-line if you want more info.
>
> 73 Dick/w7wkr at CN97uj
> _________________
> Searchable Archives: http://www.contesting.com/_topband - Topband Reflector
>
> _________________
> Searchable Archives: http://www.contesting.com/_topband - Topband Reflector
>
>