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Transmitter Hunting in the San Francisco Bay
Area
Pack-A-Lunch Hunt
March 29, 2003
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 7.01
From 2560x1920 to
800x600 and highly compressed (50%).
Nikon CP5000
Last updated:
Sunday, November 30, 2003
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Participants
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Fox: Rich - KD6VCQ |
| TEAMS (7) |
Mileage |
Notes |
| Bob - KF6VSE |
140.5 |
1st |
| Jim - KD6DX and Kathleen - N6DOB |
150.2 |
1st 10% rule |
| Rich - KN6FW and Chris - KF6VFU |
153.1 |
1st 10% rule |
| Andy - N6AIM and Mary |
172.4 |
2nd |
| Bill - K6TYO |
204.5 |
3rd |
| Henry-KF6PCE, Joan-KF6QGJ,
Bill-KF6QGK |
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Started from Pioneer |
| Mike - KG6MLL and Chris |
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New hunter. |
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EQUIPMENT I USED
1) Arrow 146-4-II,
Four element yagi.
2)
VK3YNG Sniffer MK4,
I used it for all my bearings. Additionally,
I used the MK4 as my
U-R-Here radio which displayed my
progress towards the fox exceptionally well. The MK4 was used as
a close-in sniffer as well.
4) Compass.
Magnetic compass was used to take bearings.
5) Laptop Computer. Used to plot all my bearing onto a
TOPO map.
5) AHHA
MicroFinder Doppler, Worked okay.
6)
Standard C5900DA, Mobile tri-band radio. Any mobile radio will do, as long as you can
listen to the FOX and TALK-IN frequency. I use my mobile
radio as a distant U-R-Here radio and switched to my Sniffer MK4 when I
got close. The MK4, attenuation level-6 seems to be the magic
number this time, to stop and walk.
7)
Garmin StreetPilot-III. Street level mapping helped me find streets
I was not familiar with, as well as the plot the shortest distance to
the Fox
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STORY
As you can see from my maps pictured above, I read an
initial bearing of 45*, only 5* off from the actual bearing of 40*. My
second bearing was still 5* off but, north of the actual transmitter.
Sometime during the hunt, Rich-KD6VCQ had lowered the
40-watt transmitter to 4-watts to save on battery power. As I arrived to
within 1/2 mile of the FOX (1:20 PM), I read my 3rd bearing almost over
the transmitter. I started to drive towards the Fox when Rich-KD6VCQ
raised the transmitter power back to 40-watts to help the others who
were still pretty far away. I suddenly realized that power can really
really raise havoc with reflections.
I drove all around the place, looking for the Fox,
getting bearing from all directions. Around 3:30 PM, two tow truck that
had been hiding the entrance to a small driveway moved away. As I drove
up the driveway, my MK4 climbed up to level-6 (it never reached above
level-5). I read these signs "No Trespassing, KEEP OUT" and decided to
keep looking elsewhere. Kathleen told me to drive up the small driveway
because of the high readings on my MK4 but, I didn't listen to her. What
a mistake. If you own one of these Sniffer MK4's, you better start
walking and looking when it display's level 6 (your 110 feet from the
transmitter) or higher.
After exhausting my options, looking for the
transmitter in different area's, I headed back to the area where my MK4
read level-6 and crossed the signage barrier. I should have done this
1/2 hour ago. Rich-KD6VCQ, Bob-KF6VSE, Henry-KF6PCE, Joan-KF6QGJ and
Bill-KF6QGK were all sitting around, waiting for the hunters. |
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If you look at
the close-up photograph of the water tower,
you will see a red 2-meter beam pointing straight at the metallic water
container. Rich-KD6VCQ effectively bounced all the transmitters signal
in all directions, hiding the main signal source behind the water tower.
What a good hunt. The longer we hunt, the harder they
get. I relearned, rule #3, "Trust your Equipment". |
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Rich-KD6VCQ
lowered the power again to 4-watts and later moved the transmitter to
the driveway entrance helping hunters find the Fox. |
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EQUIPMENT LINKS to the MANUFACTURE
I think the best piece of equipment I own, is the
Sniffer MK4. I use it to get quick and accurate bearings (with my
4-element Arrow beam),
as well as my U-R-Here radio to determine how close I'm getting to the
transmitter.

Click here, for
the SNIFFER MK4 web site. |
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