Article Index

Complete Index of KØOV RDF Articles

Homing In Columns

Includes columns published in 73 Amateur Radio Today magazine (November 1988 through September 2003), CQ-VHF Magazine (Winter 2004 through Fall 2003), CQ-Plus digital magazine (May 2014 through December 2014) and CQ Magazine (April 2015 to present). Web and e-mail links are provided where appropriate.

73 November 1988 cover

11/88 -- The World of Transmitter Hunting: Introductory overview article
12/88 -- Loops -- A Love/Hate Relationship: They're OK for RDF on HF, but not for VHF
1/89 -- Quads & Yagis -- The Winners' Choices: Why some say beams are better than dopplers at VHF
2/89 -- Let's Build a Quad: Plans for two-meter Strung wire quad for RDF
3/89 -- Handling Strong Signals: Plans for internal RF attenuation system by WA6DLQ
4/89 -- Selecting Antenna Polarization: Dual yagi and switch box to select 6 polarizations by WA6DLQ
7/89 -- High-Class Hunting: Some ideas for mobile rotating beam mounts and vehicle installations
8/89 -- Noise Meters: Plans for WA6DLQ's weak-signal meter that works when your S-meter doesn't
9/89 -- Build the Handy Tracker: Plans for a super-simple two-meter TDOA add-on RDF set with no front/back ambiguity!
11/89 -- Winning Foxhunts with TDOA: More on commercial and homebrew TDOA sets
12/89 -- T-hunting Fun on Six Meters: Simple equipment for 6M hunting on foot and in vehicle, including plans for an RDF loop
1/90 -- Secrets of Success on Six: Plans for a hunt-winning 6M mobile Shrunken Quad
2/90 -- Mail Call: T-hunting news at home & abroad
3/90 -- Solving HF Jamming: Introduction to RDF on the DX bands
4/90 -- Build the HF Homer: Plans for a unique mobile loop/sense RDF system for 18 to 30 MHz
5/90 -- More Huff-Duff Ideas: More on the HF homer plus a simple field-strength meter for closing in
6/90 -- Jammer Busting: How to react to jamming; introdution to the VOLMON program
7/90 -- Sniff w/a Bug Buster: Plans for a sniffer using monolithic RF amplifier chips
8/90 -- Alabama Action: More on the monolithic sniffer plus hunts in Birmingham
9/90 -- Quads with Class: Review of Alabama Amateur Electronics commercial quads for RDF
10/90 -- Try UHF and SAR: 440 MHz hunts plus search/rescue RDF
11/90 -- Hunting for PELTS: Personal Emergency Locator Transmitters, are they a good idea?
12/90 -- Throw Your Voice: Construction plans for the Fox Commander, gives remote control to the Un-Music Box
1/91 -- World Class Hiding: Convention T-hunts and hiding hints
2/91 -- Leveling the Field: Time vs. mileage scoring, which is best?
3/91 -- ELTs and PRBs, Revisited: More on search/rescue RDF
4/91 -- Avoiding the Slammer: Advance police notification? Also hunting radiosondes
5/91 -- T-Hunting Stolen Cars: All about the LoJack vehicular anti-theft system
6/91 -- Hunting for the Gold: Intro to international foxhunts; invitation to the Friendship Games
7/91 -- Three-second T-hunts: All about the Teletrac vehicular tracking and anti-theft system
8/91 -- RDF Tracks RFI: Plans for a simple 80M loop and hints on RDF at 80M
9/91 -- Foxhunters Invade Oregon: Firsthand illustrated report on the 1991 Friendship Games foxhunt in Portland, Oregon
10/91 -- Build the TBOX: Complete plans for a versatile microprocessor-based foxbox by N6MBR. Click here to FTP download TBOX07.ZIP, containing the assembly, object and binary files for the microcontroller program (10K total).
11/91 -- RDF Potpourri: More on TBOX plus "receiver hunting"
12/91 -- RDF Spans the Globe: How they hunt in England, Russia, and Japan
1/92 -- Up, Up, and Away: T-hunts in Albuquerque & the Ozarks
2/92 -- Doppler Fun in Phoenix: Homing In goes T-hunting in Arizona
3/92 -- Homebrewing Hints and Heroic Hunts: Sniffing on 440 MHz; hunting stuck xmtrs
4/92 -- Foxhunt Fame Awaits You: Hunting foxes in Ukraine and balloons in California
5/92 -- School Days and Dual-Band J's: Kids T-hunt in Oklahoma plus a dual-band hiding antenna
6/92 -- Bag Those Foxes: Antenna and Hunt Ideas: Review of a portable MFJ yagi plus "Free-For-All" hunts
7/92 -- RDF Opportunities Abroad and at Home: More Ukraine radiosports, third harmonic sniffing, and a commercial 440 MHz quad
8/92 -- T-hunt Trickery: Dastardly hints for hiders
9/92 -- T-Hunting in the Beef State: A visit and a T-hunt in Lincoln, Nebraska
10/92 -- Toward the Perfect RDF System: Introduction to the advantages of 2D azimuth-vs-strength plotting

11/92 -- What's That Whirligig?: Details of KK6CU's motorized quad and 2D storage scope display
12/92 -- Crowning the Champs: A tough convention hunt and an invitation to the 1993 Friendship Games
1/93 -- Computers Point the Way: Introduction to computer techniques for 2D azimuth/strength plotting
2/93 -- A Computer on Your Team: Plans for computerized 2D display by WB8WFK
3/93 -- Denver Hams "Excel" at T-hunting: Balloon hunting in Colorado with an Excel macro for triangulation
4/93 -- Computerized Triangulation, Part 2: All the details on the Excel triangulation system
5/93 -- Teeny-Weeny T's: Complete plans for a postage-stamp sized 30 mW two-meter transmitter
6/93 -- Medal-winning & Record-breaking T-hunts: Southern California All-Day hunts are tough, this one included 4 states!
7/93 -- A "Swiss Army" Foxbox: Review of RaCon microprocessor-controlled foxbox by N6ZAV and KD6BCH (now N6BG)
8/93 -- For T-Hunters Only ... Not!: Reviews of an Arrow Antenna yagi, the Digi-Field field-strength meter, and the Comm-Spec ID-8 CW IDer board
9/93 -- RDF Adventures in Ham Radio Fiction: Three books that include RDF, ideal for young hams or hams-to-be, plus a FM modulator for May's micro-T
10/93 -- Foxhunt Fun at the Friendship Games: Firsthand report and photos of the 1993 Friendship Games foxhunt in Victoria, BC Canada
11/93 -- Motorized Beams, Santa Barbara Style: Description of the KA6SOX/KK6OS motorized yagi and radar scope 2D display
12/93 -- Testing the Ramsey Foxhound: Review of the Ramsey Electronics DF-1 TDOA RDF set
1/94 -- Ploys and Pranks: More clever hiding ideas
2/94 -- Texas T-Hunters Trap Teen Thief: Bootleggers in Dallas plus a review of the Optoelectronics R20 sniffer
3/94 -- The Foxcopter: Description of a motorized quad system by NØMKJ

4/94 -- T-Hunters to the Rescue: RDFers in the Civil Air Patrol save lives
5/94 -- Temblor Triggers a T-hunt: Introduction to Watson-Watt type RDF sets and how they are used by public service agencies
6/94 -- Guerilla-Style T-hunting: RFI tracking in Sierra Leone
7/94 -- Attenuators Made Easy: Resistive and active attenuators, including review of the Arrow Antenna offset attenuator
8/94 -- Testing the Ramsey SlyFox: Review of the Ramsey Electronics FHT-1 transmitter
9/94 -- RACES RDF Goes High-Tech: Description of T-Helper, a Mac-based automatic mapping/trianglation system by KD6IFZ
10/94 -- Navigation and Networking via Packet: Triangulation techniques and an introduction to APRS for DOS
11/94 -- Testing the Motron Fingerprinter: Review of Motron transmitter identification system that adds to your PC
12/94 -- T-Hunting Down Under: RDF contesting in Australia is fair dinkum
1/95 -- Up and Running with GPS: GPS receivers for APRS use
2/95 -- Track It With Packet: More on APRS including a review of the first Mac version (MacAPRS)
3/95 -- Multiple Foxes = More Fun: Planning multiple T-hunts and a review of the GQ Enterprize 10 mW 2M mini-fox
4/95 -- A Good Doppler Gets Better: Why mutual coupling and whip termination are important doppler antenna design considerations, plus plans for an improved Roanoke Doppler antenna set
5/95 -- Good Deeds, Good Fun, and Goodwill: Phony SOS in Tucson; Friendship Games announcement
6/95 -- Wideband Doppler, Part 2: More on the new Roanoke antenna, which covers +/-20% frequency range, including a mag-mount version
7/95 -- Stalking the Wild T: RDF tracks endangered tortoises in the Mojave desert
8/95 -- APRS Puts Doppler Bearings on the Map: Review of N7LUE's board that interfaces most doppler DFs to APRS computers
9/95 -- The T Is On! Let's Find It!: Review of the basics of mobile T-hunting, easy ways to get started

10/95 -- Hunts and Stunts Around the USA: Regional variations on mobile hunting; interesting hunt stories
11/95 -- Cooperative Tracking and Web Surfing: More hunt stories and a T-hunt Web site in Albuquerque by AB5P
12/95 -- Foxhunting's Wide World: International Style Foxhunting Comes to California
1/96 -- More About Hamcon/Foxhunt-95: Adapting IARU rules, hiding strategy, and handicapped ham participation
2/96 -- New T-Hunting Goodies: Reviews of Agrelo micro-transmitters and a Cubex 4-element 2m quad
3/96 -- Doppler Antenna Update: A switcher with preamps by KA4IIA plus tips for checking/troubleshooting dopplers
4/96 -- Foxhunting the European Way: Firsthand stories and photos of IARU championship hunting in Germany and Sweden
5/96 -- More Foxhunts Coming, Let's Build a Yagi: Southern CA foxhunt announcement plus complete plans for N6WZI's 4-inch spaced two-meter sniffing yagi
6/96 -- Talking T's and Hidden Repeaters: Digital audio boards and the Agrelo Engineering Simplex Repeater
7/96 -- Testing the Vector-Finder: Review of a dual-antenna TDOA set by Radio Engineers of San Diego
8/96 -- Bringing ARDF To Your Town: Part 1 of practical series on how to put on international-style foxhunts, this part discusses preparation
9/96 -- Foxhunt Day, Step By Step: Part 2 of the series, covers staffing, running the hunt, scoring, etc.
10/96 -- Dirty Tricks = Valuable Training: Decoys and camouflage in California plus QRM chasing in Omaha
11/96 -- Buckeyes and Wolverines: RDFers in Toledo and Detroit hunt both with each other and against each other
12/96 -- Globetrotting Foxhunters: Hams from the USA take on the world at foxhunts in Russia and Australia
1/97 -- A Foxhunting Jamboree: Boys and girls learn foxhunting firsthand at the 1996 Scout Jamboree-on-the-Air. (CLICK FOR THIS ARTICLE)
2/97 -- Build a Multiple-Polarization Quad: Instantly change from horizontal to vertical polarization and back again with this dual-feedline design. (CLICK FOR THIS ARTICLE)
3/97 -- Testing N6BG's PicCon: Review of a new fox controller that features synchronized IARU radio-orienteering modes plus programmable tone sequences/IDs for mobile T-hunting
4/97 -- New Ideas Never Cease: Jammer tracking and T-hunting in the Akron, Ohio area, a GPS/doppler interface by N8PXW, plus new categories and competitions in the international radio-orienteering world

5/97 -- Getting Started With the Right Tools, Part 1: Introduction to simple and effective RDF equipment for VHF and UHF; this part covers beams, quads, dopplers and "sniffers"
6/97 -- Getting Started With the Right Tools, Part 2: More simple equipment such as "buzz-boxes" plus clever hiding ideas (Includes missing text from May installment)
7/97 -- Follow the Fluxgate: Find out why you should put a remote compass sensor on your mobile beam's mast and where to get one. (Wrong photo used at Photo A, correction on page 49 of August issue)
8/97 -- Build the NorthScope: A fluxgate compass makes an ideal sensor for a CRT north-up bearing display; here's the interface circuit
9/97 -- Low-Cost Monitor for the NorthScope: How to turn a boat-anchor Heathkit panadapter into a DC-powered long-persistence CRT display that's easy on your car battery
10/97 -- Creativity Runs Rampant: Hams are amazingly clever when they hide transmitters for mobile T-hunts and on-foot foxhunts; here are some "tricks of the trade"
11/97 -- Surprise!: More sneaky hiding tricks including an airborne fox and the bikini-T
12/97 -- New Sporting Goods for Foxhunting: Reviews of lightweight VHF antennas from Arrow Antenna and Super Antenna Resources, plus a receiver/antenna set from Ron Graham Electronics
1/98 -- FARS, Friendship, and Foxhunting: All about the 1997 Friendship Radiosport Games foxhunt in Japan
2/98 -- "Radiogoniometrie Sportive" in Montreal: A visit to this city in Quebec leads to a fun-filled mobile T-hunt with the Union Metropolitaine des Sans-Filistes
3/98 -- Radio Foxes Don't Howl: How to build inexpensive foxboxes for international-style hunts using surplus VHF-FM transmitter boards and ammunition boxes.
4/98 -- Build the Montreal Fox Controller: Construction plans for an inexpensive controller for synchronized international-style foxboxes, designed by VE2JX and VE2EMM
5/98 -- Build an Offset Attenuator: Use your handi-talkie with this on-foot foxhunting attenuator, made from locally available parts. (CLICK FOR THIS ARTICLE)
6/98 -- ARDF Is Off And Running: More about bringing international-style hunting to North America, including transmission parameters and rules variations, plus some thoughts about involving other outdoor enthusiasts such as orienteers and Rogainers
7/98 -- Receiver Hunting: Tracking missing pager receivers, spying on broadcast listeners' habits (MobilTrak), and an update on plans for the 1998 ARDF World Championships
8/98 -- Tracking Owls, Cranes, and Foxes: A call for volunteers to help track wildlife and a review of the Hamtronics T301-2Y synthesized transmitter board with emphasis on its use in foxboxes.
9/98 -- The Italian Connection: Marconi was just one of many radio pioneers from Italy who made possible today's hidden transmitter hunts. Also T-hunting in present-day Italy.
11/98 -- Practice, Education and Fun: John Oppen KJ6HZ finds a squawking ELT with just his handi-talkie. Also a formal practice session prepares Team USA and introduces ARDF to new hams.
1/99 -- A Banner Year, More to Come: 1998 was a year of firsts for T-hunters and radio-orienteers, including Team USA's premier appearance at the ARDF World Championships in Hungary.
2/99 -- Mobile T-hunting, International Style: The Halloween Hunt by KQ6XA was more than just spooky, it introduced Bay area T-hunters to international-style foxhunting. This report covers both the hider's and hunters' perspectives.
3/99 -- A Rechargeable Alternative and the Dancing Buzz: Rechargeable alkaline batteries have advantages over other battery types for some hidden transmitters. Also, spurious signal tracking in New Jersey.
5/99 -- Dayton, Portland, and South Texas: Announcements of the 1999 Dayton Hamvention® Foxhunt Forum and 1999 IARU Region 2 ARDF Championships, plus an update on the Burrowing Owl Project.
6/99 -- Grungebusters: Tracking down unintentional interference to ham and non-ham frequencies, with southern California examples.
7/99 -- Four Centuries of Foxhunting: More on the history of RDF and hidden transmitter hunting, from 18th Century London to the present.
9/99 -- Dayton Does DF: Tales of a great forum and foxhunt at the 1999 Dayton Hamvention®.
10/99 -- City of Roses ... and Foxes: A complete wrapup of the first IARU Region 2 ARDF Championships, and a look to the future.
1-2/00 -- Foxhunting at Hamcon-99: Find out what happened when a score of eager hamfesters tried to find 18 hidden transmitters in a historic 130-acre park.
4/00 -- ARDF Takes Off in 2000: Participants in the Portland Championships are building ARDF programs in their hometowns. Also an update on the Burrowing Owl Project.
5/00 -- T-Hunting for ELTs: Stories from Massachusetts, Oklahoma and southern California about T-hunters who are prepared to save lives by locating downed aircraft.
8/00 -- RDF Tracks Critters and Bugs: How hunters of real foxes and other animals use RDF equipment to keep track of their hounds, plus a review of NCG/Comet's "RF Bug" detector.
9/00 -- Grunge Busters II -- Intermod Patrol: Whether it comes from a distant source or is generated right at your site, you can use radio direction finding to track and solve intermodulation problems in your repeater system.
10/00 -- USA Foxhunting Championships 2001 -- Start Planning!: A site and sponsors for a multi-nation ARDF event are needed. Here's how to put on such an event.
11/00 -- Try ARDF on 80 Meters: If your club holds only 2m ARDF events, you're missing half the fun. There's another international foxhunting band, too. (CLICK FOR THIS ARTICLE)
12/00 -- T-Hunting by the Bay: Stories of hidden transmitter hunts in San Francisco and surrounding counties.
1/01 -- A New Millennium of Foxhunting: USA participates in the Tenth World Championships of ARDF in Nanjing, China and foxhunters of Orange County, California bring the fun to Scouts at Jamboree-on-the-Air.
2/01 -- Albuquerque Invites the World to Foxhunt: First announcement of the USA ARDF Championships to be held in summer 2001, plus news of the Friendship Radiosport Games in Victoria BC to be held a week later.
3/01 -- Your RDF Questions Answered: The most frequently asked RDF-related questions, with answers of course.
4/01 -- Foxhunting from Melbourne to Nottingham: For sheer enthusiasm, it's hard to beat the mobile hidden transmitter hunters of Australia and England.
5/01 -- Find Foxes and Fight RFI with RDF: Update on upcoming USA Championships, plus RFI tracking on 75 meters in southern California.
6/01 -- RDF Secret Weapon Revealed: G6UWO of Nottingham, England tells how he wins mobile foxhunting trophies with a motorized beam and polar bearing display.

7/01 -- Secrets of the RDF Whirligig: More details of G6UWO's motorized beam and display system, including a VCR headwheel rotary joint.
8/01 -- Bringing RDF and Amateur Radio to Teens: Students in Pasadena, California learn about careers in science while building antennas and attenuators for RDF fun, sponsored by NASA.
9/01 -- Texas Teens Track Transmitters and Talk Tech: More student RDF fun and learning, this time in McKinney, Texas, with free radios and corporate funding.
10/01 -- Wildlife Tracking Update: Burrowing Owls Found, Saw-Whets Sought: Update on hams tracking birds and cougars, plus news from readers and advice on foxbox labeling.
12/01 -- USA ARDF Championships, Part 1 -- Triumph in the Land of Enchantment: Meet the stateside competitors, follow their training, and find out how they performed.
1/02 -- USA ARDF Championships, Part 2 -- The World Comes to Duke City: Spotlight on the foreign competitors, and how Albuquerque's ham club organized the events. (Gold medalist Harley Leach KI7XF on the cover.)
2/02 -- Helping Your Community With RDF: Ride along as hams track a stolen UHF bus radio on the Florida coast and solve two sources of data QRM to GMRS repeaters in central California.
3/02 -- T-Hunting Fun in the Sunshine State: Beams, quads and doppler sets are all popular among T-hunters in and around Daytona Beach. Read all about the fun they have.

4/02 -- USA's Foxhunters Take On the World: Update on plans for the Second USA ARDF Championships near Atlanta and the 2002 ARDF World Championships in Slovakia.
5/02 -- Take the Hamfest Foxhunting Challenge: Whether on foot or in cars, hams should have a chance to go transmitter hunting at every hamfest and convention. Here are some examples.
6/02 -- Transmitter Hunting as a Public Service: Civic-minded hams track down illegal cordless phones, spurious emissions, and intruding differential GPS transmitters.
7/02 -- Peak Performances in Pine Mountain: First of a two-part series on the Second USA ARDF Championships near Atlanta.
8/02 -- USA ARDF Championships 2002, Part 2: Conclusion of a two-part series on the Second USA ARDF Championships.
9/02 -- What's New in Transmitter Hunting: Latest news from the world of RDF, including new polar plot software by Brian DeYoung, K4BRI and a sythnesized tuner for ARDF receivers by WB6WFK and K5ATM.
10/02 -- Foxhunting is a "Novel" Idea: A new novel for adults combines ham radio foxhunting and murder, plus ham radio fiction for youth.
11/02 -- From Radio Camp to the World Championships: First of a two-part series on the Eleventh World ARDF Championships and Team USA's participation in it.
12/02 -- ARDF World Championships 2002, Part 2 -- Closer to the Gold: More stories from Slovakia, including the pre-championships training camp in Hungary and "Cultural Day" adventures.
1/03 -- Squegging: Now It Helps Us Track the Birds: Find out what a squegging oscillator is, why it's in widespread use today, and learn about some signal identification tricks for your computer.

2/03 -- Doppler Fun, from Austria to Your Hometown: First of a series of articles on doppler RDF, with the basics and little-known facts about the man who started it all.
3/03 -- True Dopplers and Comical T-Hunting: We call them "Doppler" sets, but do they really follow the Doppler Principle? Also, the T-hunters of Albuquerque appear on Comedy Central.
4/03 -- Two New Tools for T-Hunting: Reviews of an inexpensive wide-range loop RDF antenna from Wyoming and a feature-filled receiver/sniffer from Australia.
5/03 -- Dim Sum, Dayton, and Doppler Calibration: The hunt for an illegal cordless phone in New Jersey, a promo for the Dayton Hamvention Foxhunt Forum, and more on Dopplers -- calibration this time.
6/03 -- Tracking Opportunities -- Owls, Bats and PLBs: In the news: Two new wildlife tracking projects and the authorization of individual Personal Locator Beacons in the USA.
7/03 -- Crickets, Gunshots, and Antenna Placement: Tracking gunshots with multilateration and the importance of having your Doppler antenna set as non-directional as possible, strange as that may seem.
8/03 -- Doppler Antenna Design Secrets: How to minimize directivity in your Doppler antenna array to give better performance when signals are bouncing.
9/03 -- Hide a Transmitter, Pay a Fine?: Should hams have to get permits from the government to put on a transmitter hunt in a park? Also the first full-scale ARDF hunt in Florida.
Winter/04 -- Champion Foxhunters Gather in the Buckeye State: A full report on the 2003 USA and IARU Region 2 ARDF Championships in Ohio.
Spring/04 -- Get Better Performance From Your Doppler Set: Optimize the counterpoise of your mobile Doppler array for more accurate and stable bearings.
Summer/04 -- ARDF Takes Hold -- More Progress and Innovation: A potpourri of ARDF topics including foxbox building, electronic scoring, medical preparations, and training camps.

Fall/04 -- T-Hunters Help the Public -- and Fellow Hams: Interference-tracking stories from California, Tennessee and Kentucky, plus balloon and rocket recovery by RDF.
Winter/05 -- Win Foxhunting Prizes, Mobile or On Foot: Stories of the 2004 World Championships in Slovakia and transmitter hunts at hamfests in Florida and California.
Spring/05 -- Transmitter Hunting -- A Youth Magnet: On-foot hunts bring fun to Palos Verdes students, Scout-O-Rama visitors and disabled Radio Campers.
Summer/05 -- The Watertown Sodalis Squad -- An RDF Adventure: Hams help biologists in New York state find out what happens to Indiana Bats when they emerge from winter cave hibernation.
Fall/05 -- Practice Makes Proficiency -- Learn RDF and Have Fun: Hams in Utah and southern Californa have fun on transmitter hunts while preparing for more serious RDF efforts.
Winter/06 -- Spurious Signals and Active Attenuators: Tracking unintentional interference in southern California and attenuating signals when on foot.
Spring/06 -- RDF For the Masses -- Emitters near 220 MHz: Hams and non-hams are keeping track of their dogs, cats, and elderly relatives with RDF. Coverage of RDF transmitters, receivers, and antennas for this part of the spectrum.
Summer/06 -- Remembering Two T-Hunting Comrades: A tribute to N6IDF and K6SNE after their tragic death on a T-hunt, wheelchair foxhunting, interference tracking in Colorado, and preparing for JOTA. (CLICK FOR AN EXCERPT FROM THIS ARTICLE)

Fall/06 -- Medals and More at the National and World ARDF Championships: Complete wrap-up of the 2006 World ARDF Championships and USA ARDF Championships, plus a new video on ARDF.
Winter/07 -- RDF In The Headlines: How the new E911 cellular location systems work and their potential to save lives, plus other media coverage of ham radio RDF topics.
Spring/07 -- Furry Hams and a New Rescue Beacon: These folks give new meaning to the word "foxhunting." Also news of the new TracMe rescue beacons on FRS.
Summer/07 -- Computerized T-Hunting with Doppler RDF: Display and map real-time mobile bearings automatically on your laptop with APRS or GPSS.
Fall/07 -- USA's 2007 ARDF Championships and Emergency Transmitter News: What RDF equipment worked best in the high Sierra forests? When is a PLB not a PLB?
Winter/08 -- RDF Protects Lives, Provides Fun and Promotes Good Will: RDF rescues a biker in California, plus lessons on ARDF training from Ukraine.
Spring/08 -- New Gear for 1.25-Meter Foxhunting: Miniature "ditter" transmitters and matching receivers from Communications Specialists, plus an update on the Indiana Bat tracking project.
Summer/08 -- Hams Help Fliers, Boaters and Hikers, One ELT at a Time: Amateur Radio enthusiasts in Oregon help the Sheriff by finding ELTs in unusual places. Santa Barbara hams have an effective automatic ELT notification system.

Fall/08 -- A Decade of ARDF in the USA: From the first foray to the World Championships in Hungary, the growth of stateside radio-orienteering has been rapid. One who helped was George Neal KF6YKN, who finally held the Stars and Stripes on the medal podium in 2008. Also, news of USA's 2008 championships and training camps.
Winter/09 -- Transmitter Hunters Track Rockets in the Desert, and Plan to Meet in Boston: Tiny UHF transmitters make recovery of model rockets easy, even when they go over a mile high. Also, plans for the Ninth USA ARDF Championships.
Spring/09 -- Ideas for Increasing Foxhunt Participation: Help for getting transmitter hunting started in your locality, both mobile and all-on-foot. Includes unattended transmitters and antenna/attenuator building clinics.
Summer/09 -- Championship Foxhunting Brings the World to Boston: Story of the 2009 USA and IARU ARDF Championships near Boston, plus the Case of the Concrete Communicators.
Fall/09 -- Pay to Play? ARDF vs. Park Officials: Should expensive permits and insurance be required when a few hams get together to practice radio-orienteering? Also, improvements to tape-measure yagis for ARDF.
Winter/10 -- En Route to Croatia via Ohio: News of a USA ham who participated in the 2009 IARU Region 1 ARDF Championships, the upcoming 2010 USA and World ARDF Championships, and a rigorous simulated comparison of three mobile RDF methods.
Spring/10 -- Innovators in RDF: An Inventer, a Code Writer, and a Fox Meister: Did Lee DeForest make the first electronically scanned RDF antenna? Also a foxhunting triangulation app for the I-phone and an interference-busting story from Nashville. (CLICK FOR THIS ARTICLE)
Summer/10 -- Championship ARDF Returns to the Woods of Ohio: Photo feature on the 2010 USA ARDF Championships and a lesson learned about how passers-by can think transmitter hiders are up to no good.
Fall/10 -- ARDF Team USA Returns from Croatia with Three Medals: Photo feature on the 2010 ARDF World Championships and the First ARDF World Championships for the Blind.
Winter/11 -- RDF for the masses, Part 2 -- Tracking Parked Cars: A new consumer device that claims to help drivers find their cars in crowded parking lots with 2.4 GHz RDF.
Spring/11 -- Rescue in Miller Canyon and an Updated RDF Set for the 125 cm Band: Transmitter hunters help find a lost hiker in Arizona plus a new 222 MHz ARDF set from Communications Specialists.
Summer/11 -- New Products, New Hunt Opportunities and Foxhunting Down Under: Review of the Byonics Micro-Fox 15 transmitter and KI6DYX's handles for measuring-tape yagis, plus the Australian foxhunting championships.
Fall/11 -- USA ARDF Championships 2011: Medals and Fun in the Land of Enchantment: Photo feature on the 2011 USA and IARU Region 2 ARDF Championships.
Winter/12 -- Automated Bearing-taking, Mapping and Sharing: It's all here: APRS, FoxHunt app, PicoDopp, MicroFinder, GoogleHunt and DoppSite.
Spring/12 -- USA ARDF Championships Preview and an Affordable Doppler Set: USA ARDF Championships 2012 announcement and review of the DDF2020T Doppler by Global TSCM Group.
Summer/12 -- Californians Host USA's Championships of Transmitter Hunting: Photo feature on the 2012 USA ARDF Championships at Mt. Laguna.
Fall/12 -- Most Medals ever for Team USA at the 2012 ARDF World Championships: Photo feature on the 16th World ARDF Championships in Serbia.
Winter/13 -- RDF Keeps Tabs on Rover and Provides International Competition for Hams: A review of Marco Polo, a doppler that tracks pet pooches, plus dopplers for dits.
Spring/13 -- Using HB9CV Beams for Direction Finding: The HB9CV antenna is a lightweight wide-frequency alternative to yagis and quads. Besides being useful for RDF contesting, it's serving in a new military application.
Summer/13 -- Next USA ARDF Championships, Plus a Threat to 33 Centimeters: Radiolocation is back on the 902-928 MHz band and it may have a chilling effect on Amateur Radio on that band in major cities.
Fall/13 -- Two Unusual Interference Cases and a Shrunken 6-meter Quad: Tracking interference in Nebraska and California, plus complete plans for a "shrunken" six-meter RDF quad for your vehicle.
5/14 -- ARDF in the Appalachians: USA's National Foxhunting Championships: Photo feature on the 2013 USA and IARU Region 2 ARDF Championships in North Carolina.
7/14 -- New Apps for Hidden Transmitter Hunting: Reviews of Foxhunt Pro by W6EI, SigTrax by WA4CWI and Map-n-Compass by NZØI. (CLICK FOR THIS ARTICLE)
12/14 -- Inside the 2014 Direction-Finding Championships for USA and the World: Photo feature on the 14th USA ARDF Championships in Massachusetts and the 17th World ARDF Championships in Kazakhstan.
4/15 -- Transmitter Hunting: Great Fun and a Ham Radio Recruiting Tool: Foxhunting fun at the Duluth Childrens Museum and at Scout JOTA in San Pedro, California.
8/15 -- ARDF Championships Coming to a Scout Camp in Colorado: A foxtailing demonstration at Peaceful Valley Scout Ranch leads to the 2015 USA ARDF Championships.
11/15 -- RDF in the Rockies: The 2015 USA ARDF Championships: Radio-orienteers from all over the USA plus over 50 Chinese students converge in eastern Colorado to have fun finding transmitters.
2/16 -- Results of the 2015 CQ WW Foxhunting Weekend: Foxhunting Weekend results are now being incorporated into my quarterly Homing In columns.
5/16 -- Foxboxes -- All You Need to Know: There are many ways to hide a transmitter. Here are a lot of ideas plus the review of a brand new foxbox from Byonics.
8/16 -- USA's Best Foxhunters Have Eyes on Bulgaria: Wrap-up of the 2016 USA ARDF Championships in Texas plus a ham who is bring the sport to school kids in North Carolina.
10/16 -- Transmitter Hunting Across the Spectrum: How hams are having fun with foxhunting from 3.5 MHz to 10 GHz.
11/16 -- Seven Medals for ARDF Team USA in Bulgaria: Full report on our team's trip to Bulgaria for the 2016 ARDF World Championships.
2/17 -- Results of the 2016 CQ WW Foxhunting Weekend: Many clubs and groups had foxhunting fun on foot and in vehicles.
5/17 -- Scouts Hunt Transmitters to Earn Merit Badges: New Radio Merit Badge syllabus includes ARDF antenna building and transmitter tracking.
8/17 -- New Tools For 80-Meter Foxhunting: Reviews of new products from KB1RLI and from RigExpert.
11/17 -- ARDF Enthusiasts Win Medals in the Buckeye State: The full story of USA and IARU Region 2 Championships in Ohio, plus a report from the Region 3 Championships in Mongolia.
2/18 -- Results of the 2017 CQ WW Foxhunting Weekend: Clubs and groups around the USA and the world having foxhunting.
5/18 -- Foxhunters Will Track Transmitters in Truckee: Preview of the 2018 USA ARDF Championships in northern California, plus planning for Foxhunting Weekend 2018.
9/18 -- Champion Foxhunters Travel from Truckee to Sokcho: Story and results of the 2018 USA ARDF Championships, plus suggestions for foxhunting at Scouting's Jamboree-on-the-Air.
11/18 -- Most Medals Ever for ARDF Team USA in Korea: Story and results of ARDF Team USA's travel to Korea for the 2018 World Championships.
2/19 -- Tales of the 2018 CQ Worldwide Foxhunting Weekend: Stories from around the USA.
5/19 -- ARDF in the Appalachians and a New Tool for Two-Meter Foxhunting: Review of the FoxRex two-meter ARDF set from RigExpert in Ukraine.
8/19 -- Doppler RDF Mapping on Your Phone or Tablet: Review of the DataTrax interface for the SigTrax app.
12/19 -- Nothing is Finer than Foxhunting in Carolina: Stories of the 2019 USA and IARU Region 2 ARDF Championships.
2/20 -- Tales of the 2019 CQ World Wide Foxhunting Weekend: Stories from around the USA and the world, including alien hidden transmitters.
5/20 -- Arizona Youth Hunt For X-Beacons While Others Hunt For Medals: Young persons are designing and building miniature "fox" transmitters. Also news of the new ARRL ARDF Committee and the ill-fated 2020 USA ARDF Championships.
8/20 -- Socially-Distanced Radio Foxhunting: With care, hidden transmitter hunters are continuing to have fun during the COVID-19 outbreak.
11/20 -- Put a Foxhunting Beam on Your Vehicle: Through-the-window, through-the-sunroof or hole-in-the-roof. Which one is right for you?
2/21 -- Navy Scientists Learn RF Technology by Foxhunting: A long-time transmitter hunter and ham radio instructor uses foxhunting to teach RF principles at Pt. Mugu.
5/21 -- ARDF Makes a Comeback in 2021: Vaccines are making it possible to loosen travel restrictions and open parks. National and World championships are also likely to take place in 2021.
8/21 -- International ARDF Event Update and a New 80-Meter Set: A review of the new RX80M ARDF set from British Columbia and updates on postponed radio-orienteering championships.
11/21 -- Rules for Foxhunting and a Recap of the 2021 CQ Worldwide Foxhunting Weekend: Why radio-orienteering must have uniform rules for all nations and more stories from Foxhunting Weekend 2021.
2/22 -- World Class Foxhunting in the Tar Heel State: News and photos from the 2021 USA ARDF Championships in North Carolina.
5/22 -- Foxhunting Pranks and Championship Opportunities: Clever tricks and stunts that hiders can use to fool mobile T-hunters plus news of the 2022 World ARDF Championships.
8/22 -- National and World ARDF Contests and Training Opportunities: Recap with photos of the 2022 USA ARDF Championships in Virginia and news of new practice and training sessions around the country.
11/22 -- Foxhunting at the Championships in Bulgaria and a Youth Camp in Ohio: Team USA had only four members at this long-delayed World Championships, but they brought home gold.
2/23 -- Results of the 25th CQ Worldwide Foxhunting Weekend: Stories of 2022 mobile and on-foot foxhunts from around the USA and the world.
5/23 -- Close Encounters of the Law-Enforcement Kind: Police get along well with mobile T-hunters in southern California. Also how to put on a successful hunt for beginners.
8/23 -- Foxhunters Win Medals in the Lone Star State: A detailed report of the 2023 USA ARDF Championships near Sulfur Springs, Texas.
11/23 -- Medals for ARDF Team USA in the Czech Republic: The story of ARDF Team USA's trip to the 2023 World ARDF Championships. (CLICK FOR THIS ARTICLE)

QST April 1993 cover

Feature Articles

"Improving The Dick Smith Radio Direction Finder," Ham Radio Magazine, July 1987 (CLICK FOR THIS ARTICLE)
"T-Hunting: Serious Fun," Worldradio Magazine, October 1988
"Use Radio Direction Finding to Trace Interference," Mobile Radio Technology Magazine, October 1989
"Showdown in Portland -- The 1991 Friendship Radiosport Games," 73 Magazine, November 1991 (CLICK FOR THIS ARTICLE)
"Transmitter Hunting: Tracking Down the Fun, Part 1" QST Magazine, April 1993
"Transmitter Hunting: Tracking Down the Fun, Part 2" QST Magazine, May 1993
"World Class Foxhunting Comes to America," CQ VHF Magazine, October 1996
" 73 Reviews the Agrelo Engineering DFjr," 73 Magazine, August 1997, page 24 (CLICK FOR PDF OF THIS ARTICLE)
"Announcing: The CQ VHF National Foxhunting Weekend April 25-26, 1998," CQ VHF Magazine, April 1998
"Results of the First CQ VHF National Foxhunting Weekend," CQ VHF Magazine, October 1998
"The USA Takes on the World Foxhunting Championships," CQ VHF Magazine, March 1999 (CLICK FOR THIS ARTICLE)
"Bio-Tracking: Radio Direction Finders Help Wildlife Project," Ham Radio Today Magazine (published by Radio Society of Great Britain), April 1999
"The Second Annual CQ VHF National Foxhunting Weekend April 17-18, 1999," CQ VHF Magazine, April 1999
"Results of the 1999 CQ VHF National Foxhunting Weekend," CQ VHF Magazine, December 1999
"The Third Annual CQ Magazine National Foxhunting Weekend April 15-16, 2000," CQ Amateur Radio Magazine, April 2000
"Super-Simple 80m Fox," 73 Magazine, November 2000 (CLICK FOR UPDATE)
"Amateur Radio Direction Finding: USA Holds Its First National Championships," QST Magazine, May 2001
"The Fourth Annual CQ Magazine National Foxhunting Weekend May 12-13, 2001," CQ Amateur Radio Magazine, May 2001
"The Fifth Annual CQ Magazine National Foxhunting Weekend May 11-12, 2002," CQ Amateur Radio Magazine, May 2002
"Radio Direction Finding Championships," Monitoring Times Magazine, July 2002
"Use Your Scanner to Track Wildlife," Monitoring Times Magazine, December 2002
"The Sixth Annual CQ Magazine National Foxhunting Weekend, May 10-11, 2003," CQ Amateur Radio Magazine, April 2003
"The Seventh Annual CQ Magazine National Foxhunting Weekend, May 8-9, 2004," CQ Amateur Radio Magazine, April 2004
"The Eighth Annual CQ Magazine National Foxhunting Weekend, May 7-8, 2005," CQ Amateur Radio Magazine, April 2005
"T-Hunting Then and Now -- From Gooney Birds to GPS," CQ VHF Magazine, Fall 2005 (CLICK FOR THIS ARTICLE)
"It's Radio Foxhunting Season," CQ Amateur Radio Magazine, April 2006
"The Ninth Annual CQ Magazine National Foxhunting Weekend, May 13-14, 2006," CQ Amateur Radio Magazine, May 2006
"Take the Foxhunting Challenge," CQ Amateur Radio Magazine, April 2007
"The Tenth Annual CQ Worldwide Foxhunting Weekend, May 12-13, 2007," CQ Amateur Radio Magazine, May 2007
"Championship Fun on the CQ WW Foxhunting Weekend," CQ Amateur Radio Magazine, April 2008
"The Eleventh Annual CQ Worldwide Foxhunting Weekend, May 10-11, 2008," CQ Amateur Radio Magazine, May 2008
"Bring Radio Foxhunting to Your Town," CQ Amateur Radio Magazine, April 2009
"The Twelfth Annual CQ Worldwide Foxhunting Weekend, May 9-10, 2009," CQ Amateur Radio Magazine, May 2009
"Get Ready for Foxhunting Season," CQ Amateur Radio Magazine, April 2010
"The Thirteenth Annual CQ Worldwide Foxhunting Weekend, May 22-23, 2010," CQ Amateur Radio Magazine, May 2010
"Radio Foxhunting Season Brings Medals and Merriment," CQ Amateur Radio Magazine, April 2011
"The Fourteenth Annual CQ Worldwide Foxhunting Weekend, May 14-15, 2011," CQ Amateur Radio Magazine, May 2011
"Radio Transmitter Hunting Season is Here," CQ Amateur Radio Magazine, April 2012
"The Fifteenth Annual CQ Worldwide Foxhunting Weekend, May 12-13, 2012," CQ Amateur Radio Magazine, May 2012
"Results of the Fifteenth Annual CQ Worldwide Foxhunting Weekend," CQ Amateur Radio Magazine, June 2013
"Results of the Sixteenth Annual CQ Worldwide Foxhunting Weekend," CQ Amateur Radio Magazine, March-April 2014
"Give Foxhunting a Try in 2014," CQ Amateur Radio Magazine, May 2014 (CLICK FOR THIS ARTICLE)
"Results of the Seventeenth Annual CQ Worldwide Foxhunting Weekend," CQ Amateur Radio Magazine, March 2015
"Get Ready for RDF Fun on Foxhunting Weekend," CQ Amateur Radio Magazine, April 2016
"Radio Foxhunting Season Has Arrived," CQ Amateur Radio Magazine, April 2017