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Pack-A-Lunch Transmitter Hunt
Radio Direction Finding
March 19, 2005
Thanks for visiting the San Francisco Bay
Area T-Hunting WEB SITE.
Web page and photography by: Jim - KD6DX
Web servers and space provided by: Johnathan - AE6HO
Last updated:
Sunday, January 15, 2006
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Participants
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Fox: Pete (N6YIF) |
| TEAMS (2) |
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Time |
| Jim-KD6DX |
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11:30 AM |
| Rich-KN6FW |
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2:30 PM |
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I started from
the 'west' end of Central Ave. in Fremont, California, getting two
bearings.
1) 150* with my beam.
2) 175* with my Doppler, when the fox was talking on the input to the
talk-in repeater.
*) Actual bearing should have been 159*, 23.3 miles.
Rich-KN6FW started from the Fremont start point on
Zapotec Dr. in Fremont. |
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Equipment used:
1) Initial bearing beam (4-elements) with MK4-Sniffer, compass,
protractor and laminated map.
2) Laptop running DeLorme Topo maps and a GPS.
3) Garmin SP2610 GPS with street level maps.
4) Doppler Systems, Doppler running in 'Average' mode
5) MK4-Sniffer with radiator mounted antenna for my U-R-Here receiver.
6) MK4-Sniffer with beam (4-elements) to close-in hunt (walking) the Fox
transmitter.For this particular hunt, all I
really needed was:
1) Doppler, running in 'Average' mode.
2) Garmin SP2610 GPS with street level maps and routing capabilities.
3) MK4-Sniffer with beam (4-elements) to close-in hunt the Fox
transmitter.
With a little more experience, Topo maps would help
determine how radio signals (at a distance) travel over elevated terrain
and when (close-in) elevated terrain blocks and reflects signals.
Terrain knowledge will determine how to use a Doppler.
When to ignore the display and how to average the display pointing to
the Fox transmitter. I noticed, reflections did not allow the Doppler
display to stick.
Jim Sakane (KD6DX) |
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