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Author Topic: Can You Really Locate That Jammer?  (Read 17954 times)

KI4ROV

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Can You Really Locate That Jammer?
« on: January 24, 2007, 10:43:03 AM »

Some HF bands have nets that operate at a particular frequency and time frame. They have been establish with the intent to share these frequencies and times with other amateurs and not try to "lock" in this time and frequency. No one owns any particular frequency within the FCC allocated bands. But there seems to always be a few that think if they can not occupy a particular space and time they feel compelled to make it miserable for those already using it by sending carriers or other types of jamming to purposely interfere with those occupying the frequency. Ways to locate the source of this interference is the subject of this post. Where can one go to initiate the action required to locate the equipment/persons responsible for this type interference? Also, how successful has the tracking and conviction of these type individuals been in the past?
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KT4WO

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Can You Really Locate That Jammer?
« Reply #1 on: February 05, 2007, 03:22:36 AM »

"No one owns any particular frequency within the FCC allocated bands"

Hmmm...Realy???  Tell the ARRL that!...
Start a PSK QSO just before the ARRL starts the code
practice on 80 meters!!!  See if they listen before
transmitting.

KT4WO
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KC0VCU

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Can You Really Locate That Jammer?
« Reply #2 on: February 08, 2007, 02:12:34 AM »

Doesn't change the fact that the ARRL doesn't own those frequencies. It's commonly recognized that they use them and yep, you are welcome to interpret how they use those frequencies as not being ham friendly.

Do they monitor? I honestly don't know. I do know that literally thousands of people monitor those frequencies attempting to improve their skills by trying to determine what the folks at the ARRL are sending out at the scheduled days and times. This suggests that there are probably a good percentage of them who are going to be less than impressed with you deciding to start transmitting something on those bands at that time. Liable to get one yelled at I would think.

The ARRL could be transmitting these in some of the short wave broadcast bands instead, though that would probably require a different license I would think.

I would honestly suspect that there would be more complaints about your operations on those frequencies than other complaints that the ARRL was interfering (deliberately or incidentally) with your operations. I'm not saying that those complaints would be right, just that the complaints would not be purely against the ARRL.

Of course it's pretty simple to locate where the ARRL is transmitting from, they publish that information. Making sure where the other party is working from would be a different matter. I suspect that that is really what the person who started this topic wants to delve into. If you are practicing by sending your ID in code, on a cw frequency, I would tend to suspect that the challenge of a fox hunt would be of little interest to most people. On the other hand, if you are sending out random psk, random id's in code, or transmitting ssb at 1500 watts on the frequency, mobile, that might be a bit more interesting to a lot of people. It would also tend to suggest that you are more interested in being disruptive than that you are innocently using a frequency you thought was not in use.

I guess that would be sort of like trolling on a forum to get people off of the original topic. Wouldn't it.

73,

-Rusty - kc0vcu
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K8MHZ

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Can You Really Locate That Jammer?
« Reply #3 on: February 10, 2007, 06:03:12 AM »

If you check the FCC enforcement letters you will see that indeed, the FCC uses radio direction finding equipment and they do track down people causing malicious interference on the HF bands, as well as the VHF bands.

It is not done near enough, but it is done on occasion.  
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W6WBJ

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Can You Really Locate That Jammer?
« Reply #4 on: February 10, 2007, 08:59:07 AM »

Number of Near-Field Intercepts that Riley Hollingsworth has done since he assumed his position in 1998: Zero!

(The Engineers-In-Charge at the Commission's regional offices have been forced to do them, since Riley would rather look stations' addresses up in the FCC database and send them self-serving press releases instead.  Indeed, the EICs have to work AROUND Riley when they want to do Near-Field Intercepts because Riley tries to protect his turf by claiming he has the Commissions' exclusive amateur enforcement authority.)

Number of self-serving "press release" letters that Riley Hollingsworth has sent based on inadmissible hearsay evidence: too many to count!

Then again, why do any direction-finding at all?  You can always follow the example of Moody T. Law, WQ6I, and blame one of your many enemies for doing the jamming, even when you know it's not one of them who's doing it.
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K0RFD

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Can You Really Locate That Jammer?
« Reply #5 on: February 26, 2007, 02:41:00 PM »

So how are you coming on renewing your license, Billy?
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K8MHZ

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Can You Really Locate That Jammer?
« Reply #6 on: March 09, 2007, 06:18:46 AM »

"Number of Near-Field Intercepts that Riley Hollingsworth has done since he assumed his position in 1998: Zero!"

Typical lawyer (liar) speak.  It's not Riley's job.  It is the job of field agents working out of various field offices to use RDF to verify the location of interfering signals.

As far as renewal, Monday is the day right?  
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K8MHZ

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Can You Really Locate That Jammer?
« Reply #7 on: March 12, 2007, 02:54:38 PM »

Bye-bye Billy?

W6WBJ  CROWELL, WILLIAM F  0014454912  HV  Active  03/12/2007  

It looks like the renewal request did not get granted.  If Mr. Crowell figures out a way to have a ham radio license tomorrow (03/13/2007) I will be the first to congratulate him, especially after writing a 12 page essay to W.R. Hollingsworth telling him where to stick it and then having to demonstrate to the FCC that he is worthy of holing a valid amateur radio licence.
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KD4AC

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Can You Really Locate That Jammer?
« Reply #8 on: March 14, 2007, 12:02:45 PM »

Billy,

You should try taking a long hard look at yourself instead of blaming Riley for your problems.
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WR8D

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Can You Really Locate That Jammer?
« Reply #9 on: March 18, 2007, 12:42:48 PM »

Sure they can, just a few years ago my own signal and three others were used to narrow down the area of a weirdo on hf. We're also supposed to keep an active mailing address on file with the commission. We all know this unless you're one of those types that "bought" their license from the good ole boys. Riley is only one guy with one hell of a job to do. There's also more to his job than sitting around listening to weirdo's on the hambands. I'll add if you have an honest complaint, record it and time stamp it and give the frequency where it happens and he will get right in the middle of it. Believe me the crap will hit the fan and this is exactly what more of us need to do. Don't turn a deaf ear to stuff and just turn the vfo away. As bad as it is listen for a little while and see what you can find out. Each one of us is supposed to self police our bands and report illegal activity. The weirdo's will call you radio police and all that. They fear you'll record them in all their glory and Riley will come down on them with both feet. I've done this myself and know for a fact what will happen when Riley steps in. As we rednecks say..."it ain't a pretty sight". We as amateurs have the right to clean air, we have world wide standards put in place by individual governments that we all must abide by. Lets all do something to keep our bands clean and respectful. Don't turn a deaf ear to filth, boot them off the bands. 73 John WR8D
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THERAGE

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Can You Really Locate That Jammer?
« Reply #10 on: March 29, 2007, 02:27:49 PM »

And I also wonder if Billy got that old wreck of a Dodge going. What a therapy project. hi hi
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K8MHZ

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Can You Really Locate That Jammer?
« Reply #11 on: April 06, 2007, 05:40:45 AM »

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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OBSERVER11

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Can You Really Locate That Jammer?
« Reply #12 on: April 20, 2007, 09:30:32 AM »

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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W6WBJ

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Can You Really Locate That Jammer?
« Reply #13 on: May 01, 2007, 01:25:43 PM »

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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W6WBJ

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Can You Really Locate That Jammer?
« Reply #14 on: May 01, 2007, 01:27:36 PM »

I'm still on the air every day!  Don't you just LOVE IT?!
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