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(Incomplete - Still Writing this one)
Mountain Transmitter Hunt
TRAINING
Radio Direction Finding
Sept. 18, 2004

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: Tuesday, September 28, 2004

PARTICIPANTS
FOXES
Rich Harrington KN6FW
Rich - KN6FW

HUNTERS

Jim-KD6DX, Kathleen-N6DOB, Henry-KF6PCE, Bill-KF6QGK

 

Participants

Fox: Rich - KN6FW

TEAMS (2)

 

 

NOTES

Jim-KD6DX and Kathleen-N6DOB Started from the Altamont.
Henry-KF6PCE and Bill-KF6QGK

 

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What I learned on this hunt. I'll try to break down my subjective learning curve into something like an outline.

A) Long-Distance Mountain T-Hunting is like three hunts in one.
    1) Your first initial bearings. Try to take two and head in the direction of your bearings. In my case I headed east, between the two bad bearings. My 1st initial bearing was 21-miles to the north and my 2nd bearing was 7.5-miles to the south.
    2) When you think your within 25 miles of the transmitter. Get two more bearings (from high locations). My 1st 25 mile bearing was 1.5-miles to the south and my second bearing was 2.5-miles to the north. Also, forget about your initial bearings, they will only confuse you.
    3) When your within 3 miles of the transmitter. Get two more bearings (in the clear if possible). My single bearing at 5 miles from the transmitter was almost 2/3 of a mile off, which would have put me off 3 mountain roads or one mountain ridge.
NOTE: a) 5* bearing error at 100 miles will produce a
            9-mile error to your target.
           b) 5* bearing error at 25 miles will be almost
            2 miles from the target.
           c) 5* bearing error at 3 miles will be over 1/4
            mile from the transmitter. That's 4-city blocks.
            The typical distances between mountain roads
            coincidently, are about 1/4 mile apart.

B) So the big question is, how do you know your 25 miles, 5 miles or 3 miles from the transmitter.

C) Use your Doppler.

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05map.jpg
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Start Point
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What I would like to have.
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right about now.
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5-Mile bearing.
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Found the FOX.
 
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Gas generator ?
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40-Watts (320-ERP)
 
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Terrain
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More trees
 
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040918_150900-13.jpg
Hello Henry!
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Two Guy's Pizza
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Groveland, Calif.
 
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040918_180900-20.jpg

 

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