Good to hear. TDoA is my new favorite method for transmitter hunts. 

The folks at Flex have a number of advanced things they’ve been working on or including global diversity reception which could be useful in two cases - quickly triangulating interference and solving the hidden transmitter problem on HF. I always enjoy Steve’s talks at DCC and other venues.

Ria
N2RJ

On Tue, Sep 3, 2019 at 12:36 AM Michel, Howard, WB2ITX (CEO) <wb2itx@arrl.org> wrote:
Dear Officers, Directors and Vice Directors,

I've attached a recent update from Riley on the VM program.  As you can
see, the program with the monitors is proceeding well, and we are
working on a time difference of arrival (TDoA) program with Flex Radio
to help geo-locate radio sources.

73, Howard

--
Howard E. Michel, WB2ITX
Chief Executive Officer
ARRL, The National Association for Amateur Radio®
225 Main Street, Newington, CT 06111-1494 USA
Telephone: +1 860-594-0404
email: hmichel@arrl.org

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