Sqeuling.....

[animal13]

Hello i Have a 92 S10 gazer with a k40 4ft. It trasmits for distance but as i talk to others it sqeuls and makes a horrble high pitch sound on their cb's but on mine it does not make any sound. also when ever i use my accesories like turn signal, window, wiper and pretty much every thing my cb goes staticy for a split second any reasons why please help.

I also would like to no about ground and if i have my aluminum mount will that still grond so the antennas works better. i Have a wire to hook up i just dont know how to hook it up with a aluminum base that is mounted on plastic.

Thanks very much for your input, Andy

[231]

Yea, we really do need more info'.

- Which type of K40? Top loaded fiberglass? Base Load? etc.
- SWR's ???
- Radio have a power mic?
- A pic would be most helpful

It could be many things causing this. Some radios if the SWR's are bad will squeal as you've described. On the flip side of the coin it could something as simple as a broken mic wire...or bad connection.

[Rex_foxhound]

I had a friend once who's radio would make a humming noise when he would try and talk. He couldn't hear it but that was all that I could hear. Turns out, his mic had a bad connection or something and all we had to do was unplug it and then plug it back in.
That solved his problem but yours may be something different. :Peace!:

[animal13]

I figured out all the grounding problems

The blazer with the sqeaul has a cobra 18wx st II cb with twenty feet of coax with no coiling so thats good. The antenna is a fiberglass top loaded power whip measuring 4 ft. The whip is on top of the car on the roof monted on the roof rack. We ran a seperate ground also just to be safe. The microphone is good because we checked that on a differnt cb. Worked just dandy. I am thinking its the base unit or the cb for that matter.

My buddy with the grounding problem figure out it was good. But compared to his other buddies with the same cable of 20 ft and 4ft k40 top loaded power whip like mine its self. it gets bad reception. We dont know the swr for sure but am pretty sure it is close to 1;1.5 or so. It is on a 93 chev corsica mounted on the rear plastic bunper. the cable has no coiling. The only thing i can think of is it might be the swr. The top of the whip sits about 6 or maybe a few more inches above the radio anteena but thats in the front of the car if that helps. I have a three inch spring on the whip but that did not make a differecne when i put that on no worse no better. The cb he has running in there is an 04 cobra 29 wx nx. the model that runs about $150. Any info on what i can do would be much abligded

Thanks for all the tips, Andy

[231]

Based on your description, sounds like a grounding issue to me. But I'd throw an SWR meter inline and see what the SWR really is. Just because you ran a secondary ground wire from the mount doesn't mean you have a good solid RF ground. What about isolators on the mount? What kind of mount are you running and coax connection at that mount?

[animal13]

Well i know if its a standard ground it works. Whats the diff with an RF goround though. From the batt to the mount a test light will light up. The mount is a standard mirrior mount. Its alluminum though. The connectors are just male femal on bottom on top part ot mount is female nut with 3/8 24 threads which my whip screws on to. I dont know the swr as of rate now. the sqeaul only happens some of the time though. not every time.


Any info on the corsica bumber mount.
Thanks

[231]

Well i know if its a standard ground it works. Whats the diff with an RF goround though. From the batt to the mount a test light will light up. The mount is a standard mirrior mount. Its alluminum though. The connectors are just male femal on bottom on top part ot mount is female nut with 3/8 24 threads which my whip screws on to. I dont know the swr as of rate now. the sqeaul only happens some of the time though. not every time.


Any info on the corsica bumber mount.
Thanks

RF travels on the "skin" of the wire, where electrical electrons do not. I heard a Ham describe it that way once, and honestly I cannot think of a better way to put it. Off of one of the clamp bolts, run a piece of 10-14 gauge stranded wire to a good shiney metal surface bolt on the body. I think your car is a unibody design, so that should work. I prefer to use a small self tapping screw/washer set up myself to insure a good metal contact.

Hope that helps some.

[Phaze91460]

Have you had the radio peaked and tuned ? If It was performed incorrectly you could be having some problems.

[animal13]

No i was about to do that tomorrow i was just wondering if there were any other things to try because to get it tuned and peaked its at least ten bucks at the local shops.


Any info on the Corsica

[Phaze91460]

10 bucks sounds cheep, I would be suspect of the service.

[231]

10 bucks sounds cheep, I would be suspect of the service.

Ditto that. Sounds pretty cheap to me, too. I personally would suggest investing the tuning money into an SWR meter and jumper coax first. If your antenna system isn't correct, no amount of tuning of the radio will help.

Just a thought.

[animal13]

sounds good thanks. any perticular swr meter thats good and will last?

[231]

sounds good thanks. any perticular swr meter thats good and will last?

Ya' know, there are several out there. You can typically pick up an okay smaller one (which should be fine) at just about any truck stop. They'll probably run about $14 for the smaller Paradynamic ones. I wouldn't trust one in radios though...100% anyway. Even the best of my radios that have them aren't all that accurate. I always trust an external one to be more true. I think most folks who've been in radio for awhile feel mostly the same about that, too. Perhaps you could PM or email one of the vendors here for the best deal?

Hope that helps a little.