Cobra 150GTL DX

You'll need to find another CB radio for someone to check to see if they are receiving your transmission.

first off if you don't have the proper equipment to do this you will have a cobra 150gtl dx used in the box that you can use for a chock block. turn the wrong can and you will never be able to get it back to working order.

The 150GTL has a common issue, it has to be repaired on the bench. give me a shout. [email protected]

Truck boxes may be the best looking place to mount a CB antenna but in my experience they are the worst place for performance.

The 'ground' you need is not an electrical ground but an RF ground. The easy answer is that you need to mount the antenna to a mirror or the bumper or even use a magnet mount instead on the roof. The body of the vehicle provides an RF ground that the small truck box cannot. The only way it might work is to use flat, wide ground straps at all four corners of your box to the bed of the truck. You need metal-on-metal contact.

if the radio is quiet with the engine off then i suggest first to rig up a way to temp.hook it directly to the battery.if this works then look around the fuse panel to see if it has a battery direct hook up.they sell noise filters,but i have never had much luck with them.i don't believe the antenna is the problem at all.

Check out this web page .... it will give you ALL the details that you need

http://cbtricks.com/radios/cobra/150gtl_dx/index.htm

make sure people are talking on the channel it may be no one is talking . the static tells you it is receiving something. the cobra 19 and sister radio magnum sold at wallyworld are notorious for having bad solder joints on their boards.

No, those radios are good radios. I have one just for setting swrs on antennas.

First, I went back and read your last question. You said you have a nylon washer on top AND bottom? Did you mean one under on the top and bottom side of the antenna mount? You only need theone on the top of the antenna mount, which stops the antenna itself from being grounded out. Having one on the underside stops the outter part of the stud, the one that touches the outer screw on part of the coax from being grounded. Without that getting a good ground, you have no groundplane, which will cut your tx/rx to a max of 2 miles. Also, how close is the two setups. Many times, if two vehicles are setting next to each other, you will not receive or transmit properly, just get a nasty garbled with a hint of a squeal.

If this doesn't help, please reply here or shoot me an email at:

[email protected]

Dean Pitts
Rollin CBs
Mt. Vernon, TX

This procedure is not as simple as just cutting a wire. Note that you can possibly mess your radio up if any maintenace is not done properly. I do suggest taking your radio to a proffesional to have the talkback removed, but, if you really want to do it yourself, go to ghe following link and basically reverse what has been done.

http://www.cbtricks.com/radios/cobra/150gtl_dx/tsb/cobra_200gtl_dx_tsb_10041.pdf

This is the service bulletin for the addition of talkback to the Cobra 150GTL DX and the Cobra 200GTL DX.

As long as the talkback was added correctly, this can be put back origional.

If this does or does not help, please reply on here or email me at [email protected]. I look forward to hearing from you.

Dean
Rollin CBs
Mt. Vernon, TX

does this radio have upper and lower sidebands? when you press the mike switch does it switch to transmit?