There are to very different types of T Hunting HF and VHF/UHF/SHF.
Quick answer: 2m is YES I CAN and I HAVE.
HF is do-able and has far less reflections. The problem with HF is the distance and beam size & width (calibration). For local HF you can use a loop due to the strong ground wave signal. But for long distant tuner-upper LIDs it is far harder. Sure you may be able to get a few HAMs over a few States to triangulate but unless their is a HF T hunter in the area - what did it get you. This triangulation could go over many states taking hours of driving witht an unknown next TX signal.
Then their is the more common VHF 6m/2m T Hunting. 6m is difficult due to the physical beam size and loops are not not usable on weak signals.
2m's is where all the repeater action and the home of most T Hunting/Jammers. I've found stuck transmitters and KPC3 TNC's that would stick the TX - these are easy constant signal gimmy finds. I WILL tell you I've nailed a number of jammers/LIDs including the infamous WB6JAC, a few Rose Parade jammers, and Catalina Swap Net jammers - to name a few. I've hunted for the FCC and competed agaisnt the FCC to see who was better - the two mobile HAMs each in their own vehicle beet the two FCC engineers by 30 plus minutes - the FCC Chief (HAM) was the simulating being a jammer (on 2m simplex).
Jammer hunting is hard - due to the unknown duration of the LID transmission - you must quickly triangulate and drive to the area to sit and wait for the next transmission that may or may not happen. I will boldly state I will find any 2m FM repeater jammer signal with a reasonable duty cycle.
Now comes 220/440 T hunting, these start to become more difficulty due to the excessive signal reflections/muti-path that increases with freqency. I've caught 220 and 440 jammers but it took much work with some calculated luck.
I've had no experiance in 900, 1.2G, or 2.4G. I suspect it is very very hard. Antennas may be small but the reflections will come from anything and everything and if you know what a bounce can do then you know the signals will have multiple polarizations too.
I'm proud to say I've mobile T Hunted with the "Best" - those being Southern California T Hunters. I've won and hid many many T Hunts in California - competition is often down to a 10th of a mile or even seconds. I found Milwaukee T Hunters to be very skilled too, but there hunts do not have the severe mutli-path compared to CA hides.
I just wish I could get Ohio HAMs interensted in T Hunting. My closest regular hunt is 2.5 hours south in the Cincinnati area.
LA FCC RDF Aux member
LAPD Olymics special RDF unit member
Past - LA OOC
Past - WI OOC
Owner -
http://groups.yahoo.com/group/RDF-USA The real question should be, "NOW that I found a foul mouth Jammer what can be done?" I busted an Orange County CA HAM/LID over a dozen times in 1986/7/8, created case files, sent OO Notices (he touted as merrit badges). He even jammed T Hunts as he knew (and we discovered) the LA FCC would do NOTHING. The LA area T Hunting OO's gave up and I resigned as OOC due to an inept SM/HQ and total lack of any FCC support/action.