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Ohio Valley ARES/RACES Net Every Thursday at 8:30 P.M. Repeater 146.610, alternate repeater is 146.715 both repeaters have tones of 103.5.


NEXT SOARA -- ARES MEETING WILL BE JULY 17, 2017.

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Tri-State two meter net meets daily Mon - Fri at 7:30 P.M. on repeater 146.940 tone 107.2



July 2017
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Click Here for Full Calendar

SOARA -- ARES MEMBERS

PIO & Webmaster WN8F OK to e-mai me l from here:
Ken Massie
N8TVO:
James Rowe
K8UHN:
Eric Kuhn
N8LRO:
Arthur J. Pierson
W8AFX:
Steve Sheers
N8LCA:
Bill Parsons
KC8WDR:
Harry Rice
KC8VYE:
Chad Thompson
KD8FPX:
Joseph Thompson
KD8FPW:
Mary Thompson
WA4SWF:
Fred Jones
KI4AGR:
Don Canterberry
WW8O:
Gary Stephenson
WM8O:
Wanda Stephenson
W8GMS:
Georgia Sheers
KC8WDS:
Catherine Rice
WN8H:
Mike Nimmo
W8DUQ:
Gregory Hendry
KB9ORD:
Ralph Tuley
WB8YKS:
Mike Love
KB8GWL:
Larry Jewell
N8YN:
Jerry Huffman
KD8LEQ:
Pat Little
KB8RZP:
Gregory Priddy
KE4US:
Bud Preece
KD8NYN:
David Bruce
KD8OMC:
Angie Little
W8HIC:
Jerry Lockhart
KD8RRZ:
Kenny Fields, Jr.
AC8JV:
Matthew Delong
AC8RS:
Matt Marks
AC8VQ:
Tim Nicely
KD8VRU:
Randy Franz
KK4PPJ:
James Miller
KD8WFP:
James (Jay) Boggs
KD8WMV:
Richard (Corey) Watson
KB8LWZ:
Mike (David) Barber
KB8LSR:
Jim Perry
WD8AGH:
Fred Herr
N8URU:
Eddie Jenkins
KB8TGI:
Annabelle Jenkins
N4REN:
James (REN) Reneau
KB8AAK:
RUSSELL JETT
KE8DYD:
LARRY MURRAY, JR
KE8EON:
JIM CURLEY
KC4GST:
Darrell Short
N8DKB:
Keith Brooks
KK4SPW:
Larry Jackson
KE8FSY:
Richard Russell
KM4ZXC:
Christopher Wilson
N8PSA:
Randy Friend

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DIRECTION FINDING FOX HUNTING


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SOUTHERN OHIO AMATEUR RADIO ASSOCIATION (SOARA) AMATEUR RADIO EMERGENCY SERVICE (ARES)

DIRECTION FINDING CALLED FOX HUNTING BY HAM RADIO OPERATORS.

If you are a typical ham radio operator, all you need to get started quickly and find foxes successfully is your VHF/UHF handi-talkie (HT) or scanner and some simple accessories. The most elementary way is called the "body fade" or "body shield" technique. Hold your HT tight against your chest and turn around slowly, looking for the direction at which your body blocks the signal most effectively (the signal null). At this point, the signal is coming from behind you. Walk in the direction of the null, taking bearings at regular intervals, and observe the signal strength get stronger.

When the signal is so strong that you can't find the null, tune 5 or 10 KHz off frequency to put the signal into the skirts of the receivers IF passband. If your hand-held is dual-band (144/440 MHz) and you are hunting on two meters, try tuning to the much weaker third harmonic of the signal in the 70 cm band while performing the "body shield."

Disconnecting the HT's "rubber duck" antenna will knock down the signal even more. Hearing the signal with antenna off is usually a "You are here!" indicator. Some foxtailers wrap aluminum foil around their HTs to attenuate the signal even more. If you do this, be sure to put insulating tape over the battery charging terminals on the bottom of the set first. You might damage the radio by shorting these terminals with the foil.

The "body fade" null, which is rather shallow, to begin with, can be filled in by signal reflections (multipath), nearby objects, etc. When using this method, stay away from large buildings, chain-link fences, metal signs, and the like. If you do not get a good null, move to a clearer location and try again.


HAVE YOU FOUND THE FOX?

HAM RADIO FOX HUNTING/RDF

Amateur radio direction finding (ARDF, also known as radio orienteering and radiosport) is an amateur racing sport that combines radio direction finding with the map and compass skills of orienteering. It is a timed race in which individual competitors use a topographic map, a magnetic compass and radio direction finding apparatus to navigate through diverse wooded terrain while searching for radio transmitters. The rules of the sport and international competitions are organized by the International Amateur Radio Union. The sport has been most popular in Eastern Europe, Russia, and China, where it was often used in the physical education programs in schools. ARDF events use radio frequencies on either the two-meter or eighty-meter amateur radio bands. These two bands were chosen because of their universal availability to amateur radio licensees in all countries. In the UK events with somewhat different rules are also run on 160 meters. The radio equipment carried by competitors on a course must be capable of receiving the signal being transmitted by the five transmitters and useful for radio direction finding, including a radio receiver, attenuator, and directional antenna. Most equipment designs integrate all three components into one handheld device. Radio direction finding or may be called Fox Hunting by ham radio operators. To go Fox hunting you don't need a gun or ammo. You need some ham to hide a small low power transmitter in a small town, in the forest, maybe by permission in one of our National Forest. For our group, we would prefer the transmitter to transmit on 2 meter simplex. Then the hams go fox hunting using their radio direction finding equipment, looking to pick up the transmitted signal and find the fox. The direction finder can be as simple as your two-meter handheld tuned to the frequency of the Fox. You would hold your transmitter to your chest and use your body as a rotator, turning in different directions. Your body helps make your handheld directional. Also, a small homebrew beam for 2 meters can be used. A beam is more proficient than a vertical antenna as it is looking in only one direction at one time. You'll get much more accurate bearings, plus more sensitivity when hunting weak signals if you use an antenna with forwarding gain and directivity such as a beam.

Fox hunting is a lot of fun for ham radio clubs, it is done all over the world and some hams use expensive, elaborate equipment. There is a worldwide contest in RFD/fox hunting. The useful part of this "radio sport" is it can be used in finding a lost hiker or tracking down nuisance (interference), and downed airplanes.

Radio direction finding (RFD) is used to find sources of interference to any form of wireless electronic communications, including broadcast and two-way radio, television, and telephones. It is also used to track missing or stolen cars and other property. Search and rescue workers use it to find persons in distress. Emergency Locator Transmitters in downed aircraft are tracked with RDF techniques. Hams use RDF to track jamming stations and stolen equipment, but more often, they use it just for fun. Hidden transmitter hunting has been done by hams for about fifty years and it is a growing activity.

Many years ago our SOARA - ARES club was into RFD/fox hunting, we practiced several times. One time we were called to help find a small plane that had been reported down in the forest near Hanging Rock, OH. Neighbors had called in reporting hearing a small plane having engine trouble and possibly crashed. Our group was called out and responded to the area. There were Highway Patrol, Sheriff, Fire Fighters, CAP, and ATV riders. We called Scott Air Force Base, they do tracking of satellites and can scan the earth. They told us when the next satellite would be over our area soon. A report came back that the searchers were looking on the wrong side of the hills. Our radio group responded to the general location given by Scott and the satellite. Tuning to the frequency of the planes transponder's signal and walking with their handhelds against their chest they started picking up the planes transponder's signal. Walking and turning in different directions they found the plane but it was too late, the pilot was deceased. John Stewart, WW8O, and J. P. N8LRO were the first hams to find and get to the plane crash.

The mounting box can be a small black tote box (black so as not so noticeable), a small radio cabinet, a ammmo box, a small plastic cabinet, something that is water proof and you can mount a small antenna on top. Some hams bury them and mount something on top that looks like a water sprinkler to hide the RDF. Make it look like something else. Some use a continous recorder. Some use radio control to turn the transmitter on and off. At our January 2012 monthly meeting it was agreed that we should start again to have fox hunts. We need the practice and it will be fun plus get us trained once again for emergencies.

Dave Spears, KD8CRX, one of our dedicated members researched and did purchase and donate to SOARA - ARES a small RDF transmitter. Jim Rowe, N8TVO donated a rubber duck antenna and a new battery for this RDF. Hopefully, the club can agree on a time and location and with permission for a site to use for Spring and warm weather.

If you would like to home-brew a small portable 2-meter beam for fox hunting go to this site.

http://home.comcast.net/~n3jnc/antproj/foxyagi.htm


FOX LOOKING FOR YOU


 
75 Visitors  DO YOU WANT TO BE A HAM RADIO OPERATOR - HOW TO GET A LICENSE

| GREAT HAM RADIO OPERATING PROCEDURES

| NET PREAMBLE AND MORE

| MEMORIAL DAY PARADE

| OPERATING YOUR HAM RADIO DURING AN EMERGENCY

| DIGITAL COMMUNICATIONS


DIRECTION FINDING FOX HUNTING

| HOW SOARA STARTED

| AMERICAN LEGION HAM RADIO CLUB

| SILENT KEYS | HOME | WRITE US


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