Re: My superstar 3900 transmits on one channel and...
Ok! well i deffinitally know what the problem is. You need to play with the clarifier, i think all the way to the left is a "course and fine tune" knob. This is generally for use when talking on SSB. but may affect AM if its way off.
The clarifier lets you slide on the freq. some radios will go a full channel some will only go a little or above the center of the channel. You need to play with the clarifier, you probably need to turn the course a lot, untill the audio is almost clear on the channel you want to talk on, than use the fine to tune it in so it sounds like they are sitting right next to you.
what you should do is buy a Frequency counter, you got a nice radio, so the freq. counter wouldent hurt. lets say you want to be on channel 19. you would turn the clarifiers untill i read 27.1850 That would put you right on the money
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Need more info, is the wires soldered on, has one broken, on board do you get a reading an not on meter? Could be meter or poor solder or broken wires. Because you dont get readings at all, tells me its more likely the meter or connections
is it a total no TX. or just not getting out very far.?
could have a broken mic wire. or the CB / PA switch may be in a wierd spot try moving it.. are you getting the Correct RX frequency on the channels.. ie are you getting channel 20 on acutal ch 20. and if you switch to ch. 6 are you getting ch 6? if you could explain more..
sorry disregaurd the wire colors.. on last post 1. Ground
5. CH. Up
6. CH. Down wires can be any color. just matters what pin and pole of the switch they are one.
Obviously your channel display must be working. I would assume the radio has sustain some harsh trauma to the channel selector itself possibly a drop. Remove the speaker side cover looking down on the channel selector and its pcb board check connection and between the mechanical switch and pcb. This may be as simple as a cold solder joint the problem is finding it. http://www.cbtricks.com/radios/superstar/3900/graphics/ss3900_sch.gif the schematic is for the 3900 which i believe are similar units.
You want to be able to transmit to the Coast Station on this frequency I assume. The Coast Guard monitors channel 16 at all times. This would be the primary channel in the United States. Your radio is VHF Marine Radio and has a built in frequency range of 156.050 MHz to 163.275 MHz. There is no need for a modification. This is a duplex frequency. What that means is you will transmit on one frequency and receive on another, while on channel 20. You will not need to transmit on 161.600. Turn your radio to channel 20. When you transmit, you will transmit on 157.000. And when the Port responds to you your radio will automatically receive their signal on 161.600. So if you are trying to figure out how to communicate with the port authorities then for that frequency turn your radio to channel 20 and you will be able to communicate with them.
here is the info you asked for the following is the correct wiring.
Mic Wiring Info Stock Mic Wiring 1. Ground Shield 2. Audio Yellow 3. Transmit Red 4. Receive Black 5. CH. Up White 6. CH. Down Blue Turner 4-Wire MIC. Wiring 1. Ground Shield 2. Audio White 3. Transmit Black 4. Receive N/C 5. CH. UP N/C 6. CH. Down N/C
Turner 6-Wire MIC. Wiring 1. Ground Shield & Red 2. Audio White 3. Transmit Blue 4. Receive N/C 5. CH. UP N/C 6. CH. Down N/C
Astatic 4-Wire MIC. Wiring 1. Ground Shield 2. Audio White 3. Transmit Red 4. Receive N/C 5. CH. UP N/C 6. CH. Down N/C
Astatic 6-Wire MIC. Wiring 1. Ground Shield & Blue 2. Audio White 3. Transmit Red 4. Receive N/C 5. CH. UP N/C 6. CH. Down N/C