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Transmitter Hunting in the San Francisco Bay
Area
Fremont, CALIFORNIA
February 2, 2002
Thanks for visiting the San Francisco Bay
Area T-Hunting WEB SITE.
Story by:
Jim-KD6DX
Photographs by: Jim-KD6DX and James-N1DDK
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Last updated:
Sunday, February 03, 2002
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THE FOX
Ron-N7TVE
PARTICIPATING HUNTERS
Henry-KF6PCE, Joan-KF6QGJ, Bill-KF6QGK, Jim-KD6DX,
James-N1DDK, Andy-WD6CJK, Dave-KG6ACD, Greg-KD6NNM, Matt (not
pictured),
Gary-WD6YRU, Aileen, Rich-KN6FW, Chris-KF6VFU,
Pete-N6YIF, Linda, Dan-KO6YG, Ian-KO6YQ, Bryan-KF6ZEO.
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Participants
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Fox:
Ron - N7TVE |
TEAMS (10) |
Mileage |
Place |
Henry-KF6PCE, Joan-KF6QGJ, Bill-KF6QGK |
4.0 |
1st |
Jim-KD6DX |
4.5 |
2nd |
James-N1DDK and Andy-WD6CJK |
5.0 |
3rd |
Dave-KG6ACD |
5.5 |
3rd 10% rule |
Greg-KD6NNM and Matt |
9.0 |
4th |
Gary-WD6YRU and Aileen |
10.0 |
5th |
Rich-KN6FW and Chris-KF6VFU |
11.6 |
6th |
Pete-N6YIF and Linda |
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|
Dan-KO6YG |
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Ian-KO6YQ and Bryan-KF6ZEO |
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163841 (Ron-N7TVE) |
163911 (Chris-KF6VFU) |
Saturday, February 2, 2002, 5:00 PM,
Fremont, California.
Ten (10) teams participated in Ron-N7TVE's hunt of three
transmitters. Mileage to the Hard transmitter counted to win.
1) First and Hard transmitter, 146.490 MHz.
2) Second and Easy transmitter, 146.415 MHz.
3) Last, an intermittent Jammer hunt, 147.540 MHz.
Initial bearings to the first two transmitters were
full of reflections and very difficult to read. Using my
Arrow 4-element
beam, I was able to eliminate all weaker directions and read the
strongest signal within 45* of the proper direction. My bearing to the
Hard fox wasn't too bad. |
Overall initial bearing Map |
Track to the Hard Fox. |
Track to the Easy Fox. |
Track to the Jammer. |
I changed
my AHHA Doppler's Filter
parameters again, using a 'QFIL' of, 2 / 9 / 9. This seemed to work
better than my previous setting of, 2 / 10 / 10. The new setting was
definitely more responsive and didn't seem to affect the accuracy much.
The responsiveness hunting the Jammer transmitter was a
little on the slow side, I would recommend not using the filter but,
just the raw, non-filtered mode.
Rich-KN6FW is currently working on a better FILTER
algorithm for the AHHA
Microfinder. Since the Microfinder is software (ROM) updateable,
I'll be very interested in upgrading. |
164133
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164152 (Rich-KN6FW) |
164321
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164703
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Equipment I used to find the transmitters:
1) Arrow 4-element
two-meter beam.
2) Arrow Attenuator.
3) Magnetic Compass.
4) Protractor.
5) Laminated Maps.
6) Garmin
StreetPilot-III, GPS street level mapping.
7) Doppler, AHHA Microfinder.
8) U-R-Here radio, Icom R3.
9) Mobile Tri-Band
Amateur radio. Listening to all channels. |
164718
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165222 (Greg-KD6NMM) |
165343
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165526
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Once off the Start Point Hill, my Doppler continued to point in a good
direction towards the Hard Fox. Thanks to the QFIL Filter, the Doppler
only pointed in the correct direction. I was
directed to turn left on Warm Springs Blvd, drive South and then turn
left again onto Scott Creek Rd. What a dream this Doppler has become. I
was originally going to drive South on 880 towards Hwy-237 (because of
some other hunter's initial bearings) but, the Doppler insisted I should
turn left on Warm Springs Blvd. and follow the pointer.
I ended up driving straight (without errors) and right
up to the Hard Fox. |
165541 (Dan-KO6YG) |
171146 (Ian-KO6YQ) |
172128 (Pete-N6YIF) |
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175055 (Hard Fox Location) |
174917 (Hard FOX) |
As you can see,
I chose to ignore the 'KEEP OUT' sign, driving past it and located the
Hard Fox chained to a fence post, some distance within this private
property. Normally, transmitters should not be
located on private property. |
Photo by James Lee |
181013 (Easy FOX) |
The Easy Fox
(2nd transmitter) was also located within a CLOSED park. This was a
'No-No' too. Of course, as an avid T-Hunter, I drove on through and
located the Easy Fox chained to a light pole. |
185055 Dave-KG6ACD |
185107 Ron-N7TVE |
The Jammer hunt
was a little more difficult for me. I drove around the area way to much
before I found him. Dave-KG6ACD apparently drove
right to the Jammer Fox, parked on the upper level of Ohlone College. |
185329 Andy-WD6CJK |
185334 James-N1DDK |
James-N1DDK and Andy-WD6CJK did an excellent job and found the last
transmitter (Jammer Fox). James mentioned while
at the Easy Fox (2nd transmitter), he saw multiple "FLASHES", as if
someone were taking pictures (that was me taking pictures) and drove up
to the College to investigate. James and Andy, your very smart.
I took a picture of Ron-N7TVE's (Jammer Fox) view from
the College. Very nice. |
185421
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185807 (View from Ohlone) |
Photo by James Lee |
190226
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Thanks to
James-N1DDK for taking a picture of me taking pictures. |
191655 Rich-KN6FW |
191857 Gary-WD6YRU |
Hunters began
arriving. |
192124 Henry-KF6PCE |
193133 Ron-N7TVE |
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201841 |
Dinner was held
at the Famous, Mission Pizza on Washington Blvd.
See you at the next transmitter hunt. (Schedule)
Jim Sakane (KD6DX) |
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