stupid cb radio operators

[N4UED]

WOW HE MUST BE PROUD . BUY A LOW PASS FILTER AND MAKE SOME 75 OHM CHOKE COILS FOR YOUR TV .

[29pu04]

ha ha i love it your tv will blow up i hope soon ha ha

[TheZeke1974]

Maybe you or he might have a loose connection somewere. Thats very bad TVI with 100 watts output. I run 750 watts on HF and dont even get a whimper from my TV but we have cable here. I dont even bother my AM FM boombox.

[bolloxinator]

Looks like a high-power, typically low-quality, harmonic-and-sidebands-rich, overdriven and tweaked-up-for-soot linear amp in use there.

[funnyman1972]

Get beams, They work better as long as they are pointed away from other houses.and get your swr very very low.stay away from a99s imaxs they pull douwn rf.play with an antenna tuner.swr goes up tv goes out.try it

[silicon212]

- continued from prev, part 3-

A properly filtered and tuned transmitter, as others have pointed out, go a long way toward eliminating the interference from the transmitter end. I also can't stress enough the importance of a properly grounded and constructed antenna system. Those A99-style antennas are poor from a TVI standpoint, especially with a ground plane (splatter) kit installed. The best omni antennas are aluminum 5/8 wave ground planes.

[MightySaturn5]

I have had excellent luck with the newer Radial beam "ground swell" full wave. Never any complaints from neighbors yet was able to see a huge increase on the portable wavetek strength meter- the old style extended Yagi I used to own would read 18 dbv @ 27 ft. away while the new one hits an impresive 112...shit, I got to go...my moms pissed.

[silicon212]

To clear up some misconceptions about the TVI, there are two things at work here.

One is the receiver's fault, one is the transmitter's fault. On the receiving end, many TVs (and phones, etc) are cheaply made these days, minimally shielded. They try to escape their duty here by pointing out the FCC part 15 sticker they adhere to the TV: "This device must accept any interference, including that which may cause undesirable operation".

- continued to next -

[silicon212]

-continued from prev -

The other situation is with the transmitter and it largely has to do with AM operation. When an AM signal is overmodulated, it creates harmonic frequencies, which are multiples of the fundamental frequency. Depending on the filtering of the transmitter, these frequencies will interfere with other services which operate on them - i.e. 54MHz (TV channel 2) and 81MHz (TV channel 5), which are multiples of 27MHz.

- continued to next -

[1fst440duster]

quit using cheap junk tv's and you wont have that problem

[biggtimmy253]

I can see why your upset, but i dont think you need to say all cb aperators are dumb? and its not the cb's fault. what you gotta do is check your tv coax for breaks in the insulation, if you find some, put a hell of alot of electrical tape around it. the cb signal is jumping from his antenna, into the breaks in your tv coax. Also ground your tv coax.

BiggTim (KHD253) Chatham Ontario

[Blaze1024]

Part 2 of 2

The operator of the CB transmitting equipment IS at fault for this interference. The operators CB equipment is improperly adjusted. His signal is over modulated and producing harmonics well outside his fundamental frequency. These harmonics are what is causing the TVI.The argument that the TV is at fault is only true when the CB station is properly setup,adjusted, maintained and used. Next time try using an oscilloscope and a 2 tone test to properly setup your stations audio.

[Mindraker1]

It is my understanding that a simple (and cheap) filter can be bought for the TV to make this interference go away. I had one put on my crummy phone, because it picked up radio signals. Worked like a charm.

[Blaze1024]

part 1 of 2

Reading these posts makes me realize that the average CB user does not have the technical knowledge necessary to setup and use a linear amplifier correctly. I doubt the person using the amplifier knows the difference between a class a,b or c amp or what amplifier linearity is or for that matter how to properly tune and adjust a station to maintain it's linearity.

[bratina501]

CB sets are not filtered well and it is not caused by over-modulation it is a side effect of any HF transmitter and can be solved by installing a low pass filter on the transceiver and a high pass filter on the TV.

[bigpimp347]

we dont have this problem in the UK, we uuse FM, also we use cable or satellite for signals and not old antennas and crappy TV's..

i run over 1kw and don't touch any TV in my estate, and a lot of my friends run standard 100w or more and cause nothing,

it's never the CB, always the TV, or the coax or the amplfiers they have upto the mast, but you try and tell the TV owner that..

[skipshooter821]

good amp?

[akdude47]

He is over modulating on his CB, which creates out of band harmonics, I.E. the same freqs as your TV set, then he is running that crap signal into a amp, making it much worse.

CB amps are usually hardly filtered at best.

So to cap it off...

crap over modulated radio spewing harmonics outside the CB band.

Being fed into a amp and made much worse due to the amplification, and the amp is is probably not filtered either.

Good luck with that one!

[KeithWales123]

Cb dont interfere with TV, badly setup TV's pickup CB, theres a difference.

[LuC1Fr]

Since he's running an amped rig, he could have leaked onto VHF/UHF Frequencies.

[KevinRedMan2007]

thats some bad ass tvi.when the skip is going.go to 38 lsb. and call for the hamilton boys.i have some videos of the locals around here.check em out if you like.

[jdanb]

where aboot from canada are you coming from? (sorry about the pun!) next time skip is running from the north, i'll have my neighbor aim his beam your way!

[tonytonytee]

haahaha i have that problem here too in colorado springs colorado. it is amazing what a good amp will do to local televisions.

[jdanb]

My neighbor bucket is getting a kick out of this one! That he loves to squash us neighbors all the time! LOLOLOLOL! (i myself do not find this funny; jdanb)