VHF trouble

TROLLING

Cadet
Joined
Dec 31, 2002
Messages
19
I was trying to straiten up some wire and when I got done guess what no radio. It comes on and it seems right but nothing coming in. I checked the antenna no continuity between the pin and the collar. I think that is right. Can't figure what I did. Light works changes channels etc but no incoming. Any help is good help. thanks
 

Kesh

Petty Officer 1st Class
Joined
Oct 29, 2002
Messages
272
Re: VHF trouble

Assuming that your radio worked well before you worked on the cables, the most probable cause is the anntena cable. I would suggest the following in order to locate the problem:<br /><br />1) In order to make sure the internal audio circuits of the radio are OK, try to set the "squelch" to one extreme or the other. At some point you should hear the noise of the audio circuit on the speaker. This is a test just to know if the audio circuits are working.<br /><br />2) If audio is OK, then you better check if the problem is the antenna. A trick I always use is to get a piece of cable (no matter the type of cable, just a normal copper cable with its insulation, with a lenght of 2 or 3 ft), stripp the insulating a bit on one extreme, and then insert it in the central hole of the female connector for the antenna on the radio unit. This will serve as a rudimentary antenna (dont expect quality reception) and will allow for some reception if your radio is in good condition. Scan through the channels and if you are lucky you will hear something. DONT TRY TO TRANSMIT. Transmitting using a bad antenna can damage the radio unit. Many radios now have a circuitry to protect the unit when no antenna is connected, but it is better not to mess with it.<br /><br />3) If the reception trick works, then you have a problem in your vhf antenna. The most common problem is the cable or the male connector. Check the soldered union in the center of the pin. The coaxial cable has a central conductor which enters the pin and then it needs to be soldered. Check also for hard bending, which can also cause the central conductor to broke.<br /><br />I am also assuming that power to the radio unit is OK as you say that it turns on. However, check that it has good ground.<br /><br />If nothing works....take your radio unit to a technician. :)
 

Boatist

Rear Admiral
Joined
Apr 22, 2002
Messages
4,552
Re: VHF trouble

Trolling<br />If you can get radio out in open just take a 24 inch peice of copper house wire been a 90 degree angle on one end and plug into the center of antenna connector. Should work quite well. tune to weather or something. If radio works then check your antenna cable at connector, where it goes thru the deck and where it connects to antenna. Also cable should not make any sharp bends.
 

TROLLING

Cadet
Joined
Dec 31, 2002
Messages
19
Re: VHF trouble

You guys were both right, bad antenna connection but I had another problem along with that. I found out that the radio will appear to work but not receive or transmit if the battery is low. I was reading just under 12 volts and it requires 12.3 minnimum. That was probably the original problem until I started messing around and disturbed the antenna connection. Connection must have been lose and you know I would rather fight this thing in the garage then on the water. Thank you both very much.
 
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