Jamming CB Frequencies/Channels Possible?

The other day, one of our O/O's told me about an incident that had him scratching his head. The bears were working an area hard. He seen at least 9 bears in a short distance. He does not have an el-cheapo CB, you can hear him clear for miles. Well he tried to talk to other drivers, to warn them about all these bears. It was like his radio was not transmitting. He could not get anyone, and at least some of those were ones that always talked to him, even if it's just to B.S. Once he was a distance away from the area of the bear concentration, he no longer had that problem. This sounds bizarre, and the only thing we could think of, is they may be using some kind of jamming for the CB freqs. By the time I arrived in the area, the bears were no longer around. They must have finished working the area for the day or taking a lunch break. (Oh and yes they will all take their breaks together, been there done that).

Just some food for thought, it may be that the bears have graduated into some type of high-tech equipment, to help render the CB bear reports useless. It really wouldn't be that difficult, because it is common knowledge this info is relayed on Chan 19 most of the time. So they would just need to focus on that frequency, and not such a broad spectrum.

So for any of you radio wizards, would this be possible?

 

possible?? yes

 

They could have been simply throwing a carrier with a mobile radio in a crusier. Or it could have been some yahoo driver setting in his truck nearby. I would doubt that they would have equipment that could interfere with the workings of the radio its self. Most radios are shielded farely well against RF signals that do not come through the coax. Something like that would be very costly and also interfere with other types of radios and electronics.

 

Ok, this then leads me to think that they (bears) are not really interested in big trucks running the legal speed limit, but in the revenue generated. When I was LEO, parking in areas, running radar, the CB reports on me, acted as deterrents. It's a common reaction when you see one or get a CB report, to slow down through that area. That's the main objective is to get traffic to slow down. There is one negative aspect, a driver that is hauling illegal goods, be it stolen merchandise or drugs, is warned and can detour around them. I would hope that our LEO's have not deteriorated into wanting just the $$$ and not achieving the main objective of their job. I'm thinking that maybe they were out there looking for some specific vehicles that are engaged in criminal activities, and thus did not want them to be tipped off.

 

Yes it's easy to jam a channel on the CB. Throw a dead key and use a rubber band/piece of tape to keep the mic hot. Or Redman CB makes a box that lets you lock down a channel for as long as you want when you feel like being an A hole. Heck if you really want to put everyone on communication probation, add in a big amp. Then only those with more power than you will be able to talk over your hot mic.

As for if the cops were the ones jamming the channel....good question...most cops I don't think run CB's in their cars anymore, and I wouldn't think they would jam a CB frequency, then again cops are known for doing all sorts of illegal stuff for self benefit, so....

BTW this didn't happen to have happened in Louisville KY did it? I was driving thru there on I-64 on Thursday of this week and some clown had channel 19 locked down.

 

Just wear the tin foil hat, you'll be ok.

 

Cop's could care less if some yo-yo with a CB Radio gives out their position.... This is not the 1970's any more...For every 100 vehicles that go by a Police Car shooting radar, there maybe only one of those 100 with a CB Radio...and even then the chances are less than 1 in a 100 that that vehicle has his radio turned on!

Most likely your friend is mistaken, and there just wasn't anyone within hearing distance of him at the time, or they just didn't respond to him because they didn't want to, OR...someone running a big ol nasty amp was just keying him out for trying to give Bear reports...

Cop's jamming the freq, is just about the dumbest thing I think I have herd in years.:smt044

 

No this was in Kansas on US-50 Hwy between Strong City and Newton. I know cops will try and use anything, sometimes they do need to be creative.

It may have been another trucker throwing a dead-key, we don't know. But I'll just say from past experience as a LEO, yes they will get creative when they need to accomplish a task. That could even be setting up a CB and throwing a dead-key to make it hard for drivers to give away their location. When I was LEO, several of us had CBs in our cruisers. I would toy with the drivers, after they had broadcast my location, I would then use back roads and boogie down the highway, popping up periodically. Within no time you would think there were dozens of county-mounties. Oh and this O/O that told me about this.. former LEO as well. Dumbest thing you've heard of??? Sometimes doing something that is thought of in that way, is why it's done.

 

They've had these for a while now, y'all need to keep up with the rest of em.

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I looked up this SESP site, and noticed the vehicle mounted jammers which may clarify what I did see. I noticed a white van, no markings, such as business logo, just plain white full size van (don't recall if it was a Chev, Ford or Dodge). This van had more than 6 antennas, and they were strange looking. At the time I thought he was some weirdo having that many radios, or some radio tech. However, no business logo on the van. I've seen service vehicles, like Motorola's that have several different antennas, but his wasn't like that. So I just blew it off as some strange radio hobbyist.

Hey, my Reynold's Wrap cap is not out of adjustment. I make sure it doesn't get too tight on my head...