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Transmitter Hunting in the San Francisco Bay Area
Fremont Hunt.
June 1, 2002

Thanks for visiting the San Francisco Bay Area T-Hunting WEB SITE.

Story by: Jim-KD6DX
Photographs by: Jim-KD6DX
Resized and edited with Thumbs-Plus 5.01
& Photo Shop 7.0
From 2560x1920 to 800x600 and highly compressed (50%).
Nikon CP5000

Last updated: Sunday, June 16, 2002

THE FOXES

Larry-KD6FFN, Pete-N6YIF, Linda and Dan-KO6YG

PARTICIPATING HUNTERS
Henry KF6PCEBill KF6QGK


Jim KD6DX


Henry-KF6PCE and Bill-KF6QGK
Don-KD6IRE, Linda-KE6BEO, James-N1DDK, Margo, Andy-WD6CJK, Gary-WB6YRU
Rich-KN6FW, Greg-KD6NNM, Matt, Bill-N6IMS, Art-W6VV
Jim-KD6DX
Paul Shinn, Terry-KB6EBZ, Don-KC6IPO
Dave-KG6ACD

 

Participants

Foxes: Larry-KD6FFN, Pete-N6YIF, Linda and Dan-KO6YG

TEAMS (11)

Mileage

Arrival

Place

Henry-KF6PCE and Bill-KF6QGK 11.2   1st
Don-KD6IRE and Linda-KE6BEO 11.4   1st 10% Rule
James-N1DDK, Margo and Andy-WD6CJK 11.5   1st 10% Rule
Gary-WB6YRU 11.6   1st 10% Rule
Rich-KN6FW 11.7   1st 10% Rule
Greg-KD6NNM and Matt 12.3   1st 10% Rule
Bill-N6IMS and Art-W6VV 12.3   1st 10% Rule
Jim-KD6DX 12.5   2nd
Paul Shinn 13.9   3rd
Terry-KB6EBZ and Don-KC6IPO 14.5   3rd 10% Rule
Dave-KG6ACD 15.6   4th

 

map1.gif map2.gif Wow, what a transmitter hunt. Eleven out of eleven teams finished, with seven of them in first place. What an ending to a tremendously fun hunt and under one hour.

As you can see from my GPS track, I made a few (mileage) costly mistakes. I didn't do to bad time wise but, only mileage counts in this game.

overall GPS track
location of Fox-1
map3.gif map4.gif The Garmin StreetPilot-III can plot the shortest distance between points (as you can see on one of the maps). If only I knew where the transmitter was hidden to begin with, I could have been a winner too.
location of Fox-2 shortest route
if done properly
Eleven teams gathered at the Fremont Start Point, taking initial bearings to both foxes.

My bearing to the first fox was 325* and the second fox 345*.

Actual bearing were 321* to the first and 345* to the second fox.

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EQUIPMENT I USED:
1) SuperDF | TDOA: To obtain my initial bearing.
2) AHHA MicroFinder Doppler: Using "Digital and Standard Filtering". Worked really well on both.
3) Garmin StreetPilot-III: With street level GPS mapping.
4) Small (8-1/2 x 11) laminated map of Fremont, compass, protractor and felt-tip pen.
5) Icom IC-R3, U-R-Here radio. An invaluable receiver for direction finding. With it's graphic (historical) display of the fox transmitters signal strength and it's 4 built-in attenuators, I was able to drive, quite secure in knowledge I was getting closer to the fox. When my IC-R3 was dialed to attenuation #4, I knew I was within walking distance of the transmitter.
6) Mobile radio, Standard C5900DA. I use this tri-bander to listen to both fox frequencies and listen in on the talk-in communications channel.
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CONCLUSION:
1) Map of the area your hunting.
2) Initial bearing to all foxes.
3) Listen, at all times, to all the Fox Frequencies.
4) Icom IC-R3, as a U-R-Here radio is priceless.
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The first fox pretty low to the ground and only transmitting 3-watts. Making it difficult to hear from the start point.

One nice thing about the AHHA MicroFinder, this Doppler was pointing towards the fox before I could hear it on my mobile radio.

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Inside the fox box.
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The second fox didn't hide at all. Larry-KD6FFN just placed the fox box on-top of his vehicle.
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Dinner was PIZZA at MISSION PIZZA on Washington Blvd, Fremont, California.
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See you at the next hunt, a "Bay Hunt" Saturday June 15, 2002 at 6:00 PM.
Start from anywhere. Rich-KN6FW will be the FOX and the talk-in will be on 147.045+ PL94.8.

Jim Sakane KD6DX

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