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RE: Can You Really Locate That Jammer?
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by THERAGE on March 29, 2007
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And I also wonder if Billy got that old wreck of a Dodge going. What a therapy project. hi hi
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RE: Can You Really Locate That Jammer?
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by K8MHZ on April 6, 2007
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Billy should have lots of time to do it. His licensed shows expired and offlined for enforcement action so he won't be playing much ham radio.
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RE: Can You Really Locate That Jammer?
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by OBSERVER11 on April 20, 2007
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on the topic at hand, the simple answer is YES.
"Dopple-scan" and other methods work quite well to locate VHF and UHF signals. Then once you know a general location, us an "L-per" to get closer still. The L-Per is an AM receiver used to locate aircraft ELTs, but works nice on 146MHz.
With enough time, effort and money, you can link doppler devices using APRS.
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RE: Can You Really Locate That Jammer?
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by W6WBJ on May 1, 2007
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On April 3, 2007, Riley Hollingsworth sent me a letter granting me perpetual operating authority. I never need to renew my license again. Isn't it WONDERFUL?!
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RE: Can You Really Locate That Jammer?
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by KB5DPE on May 2, 2007
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"On April 3, 2007, Riley Hollingsworth sent me a letter granting me perpetual operating authority. I never need to renew my license again. Isn't it WONDERFUL?!"
I'll bet you've got a bridge you want to sell, too. Even if he wanted to, which I'm sure he doesn't, Riley Hollingsworth doesn't have the authority to do that. If such a thing were ever to be done, it would have to be granted by Congress and it would be for someone who made a MAJOR contribution to the state of the art or for the national benefit; not for someone who's contribution to amateur radio has yet to be found. You really need to take a good look in the mirror and, this time, open your eyes.
Tom
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RE: Can You Really Locate That Jammer?
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by KB5DPE on May 2, 2007
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From your callsign lookup, re. tube audio: "Nothing sounds as good as tubes!"
I guess, if you like the sound of distortion!
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RE: Can You Really Locate That Jammer?
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by THERAGE on May 2, 2007
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RE: Can You Really Locate That Jammer? Reply
by W6WBJ on May 1, 2007 Mail this to a friend!
On April 3, 2007, Riley Hollingsworth sent me a letter granting me perpetual operating authority. I never need to renew my license again. Isn't it WONDERFUL?!
What a load of Bravo Sierra. Billy, look in the mirror once more. You're an IDIOT!!!!
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RE: Can You Really Locate That Jammer?
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by N6JSX on May 21, 2007
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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.
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