Cobra 29 LTD CB Radio - Page 6 - Answered Questions & Fixed issues
Cobra 29 ltd. turned rv4 switch and cb started
if this is a used radio its because some golden screwdriver got into it but if its a new one then its the radio.Check the reverse polarity diode in either case to see if its burnt. If so replace it and see if it happens again.
How to set duel wilson 2000 swr
with wilson antennas you don't have to need to run duals the proper way to adjust the SWR is to get an external meter like a trucker 2000 and a dummy load. you hook the dummy load to one antenna while working with the other and then switch the operation around. this way both antennas are matched seperatly yet work together.
How to ajust swr on cobra ltd cb bluetooth radio
same as on any other radio . Remember it not the radio but the antenna you are tuning.If you can't move the tip up or down then you have to cut the antenna to shorten it or add a spring to lengthen it. thats only if your match is bad.
Tx light comes on but no transmitt
is mic plugged into radio? put oin another 4 pin cobra mic and see if it still happens.make sure your squelch is wide open and rf gain is also.If you still have the problem it could be several things. Final , main IC, or audio chip.
Cb receives static
they all do. turn your squelch to the right till it dissappears then turn it baqck to the left slowly until it just break sand your in good shape.
I am having a problem with mt cb. I used all new coax, antenna, antenna stud and mount. New mic and radio. The problem is I hook up the swr meter, keyed and the meter swung hard right. I have changed
ok, you have a high SWR.. this is what you can do.. you're gonna need to check the Radio's coax connection to see if it's loose on the Radio itself.. you're gonna have to open the Radio cover on the speaker side.. now go look at the connections on the pc board itself and see if there is a possible broke connection.. one is pcb ground, and one for the center. also, you might want to get a phillips head screw driver and gently tighten all the screws on the pc board. becareful going in there.. after this said and done, check the antenna connector itself to see if it's loose. if so, then you're gonna have to a pair of pliers to turn the nut on the inside while you use wrench to hold it in place on the outside.. now you're ready to test the radio.. don't put the cover on just yet until you see the results. set up your SWR Meter to the Radio and then set up the dummy load and do a SWR Test. if the reading is good, then the Radio is all set.. now for the Antenna.. you said that it's all new, but regardless you need to test it too.. check both ends of the cable and do a condinuity test.. get a ohm meter that has an audio sound. this will help you.. set the meter to ohms/conditnuity.. then short out the probes to get a ZERO reading/audio sound.. now take one end of the of the cable and put the probes on the connector.. one probe for the outter ground shell and the other probe to the center pin connection. if you see a ZERO reading or an audio sound, that means you have a short in the cable.. another way is to do it end to end.. put one probe on one end of the cable, and the other probe on the other end.. test the ground side first.. if you get a sound or a ZERO reading, that means you may have a short in the cable itself and may requier to remove the connectors.. some cases you might have to replace them.. remember to calibrate your meter when testing let me know how it goes.. I'll continue to help you.. you can contact me on Facebook.. https://www.facebook.com/pages/ANR-Communications-Repair/136358796473669?ref=bookmarks Good Luck..
SWR Low on all channels
how low is low If you have a match of 1.5 to 2.0 on all channels I wouldn't complain thats perfect.
Receiving volume
was the radio wired direct or with a cigarette lighter plug? try the RF gain knob and the mic gain knob.If they are wide open does the radio rec.any better? if not you may have a problem with the main IC
Cobra 29lx/am power adjustment
the components in this radio will not let you turn it up more than 4 watts nor will it allow you to turn the modulation to more than 90% the best thing to do if you want more power is to run a small heater and be happy.
What is the talkback feature used for
it ids used to set your voice to any noise toy you may have installed you can hear the way its set so now there is no need to bother anyone with a radio check
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