Topband: K1N DQRM Tracking Project

[mstangelo at comcast.net]

If you did locate the offender what would you do?

You could report him (or her) to the FCC but the FCC would probably not act until they could catch the offender in the act.

These DQRM offenders act sporadically so it would be difficult to track them down.

What is the offense? This is not interference in an emergency or health and welfare situation but to a station participating in a hobby event which itself is using up tens of kilohertz of spectrum for the act of working a "new country".

Mike N2MS


----- Original Message -----
From: Jim Garland <4cx250b at miamioh.edu>
To: n0tt1 at juno.com, Topband at contesting.com
Sent: Sun, 08 Feb 2015 19:49:28 -0000 (UTC)
Subject: Re: Topband: K1N DQRM Tracking Project

I don't remember the article, Charlie, but that's a fabulous idea, and at
first blush it doesn't sound all that hard to implement. One way might be to
set up three receivers at different locations, each with a 10 MHz GPS or
rubidium time base (both inexpensive and readily available.). For each
receiver, a simple frequency divider could produce a pulse every 100
milliseconds from the time base. The pulse would trigger a frequency
counter, which would then count the elapsed time from the ttrigger pulse
until the DQRM signal started transmitting (or stopped transmitting -
doesn't matter which).  Once the differences in elapsed times were known
between the three receivers, the DQRM signal could be accurately
triangulated. Sounds ike a fun project. Sure wish we'd had something like
that for the Navassa DQRM jerks.
73,
Jim W8ZR

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