20 Most Recent
Cobra 148 GTL 120-Channels Base CB Radio Questions & Answers
Voltage regulator
It is very likely that the reverse polarity diode inside the radio is shorted, usually because the radio was connected up incorrectly.
I have a general lee
The radio needs to be tuned for the box. 3 watts sounds too high for a 2x8.
I would say it would be more like 1-1/5 to 2 watts. That may be why your not getting that much swing.
You should set the radio so the box dead keys around 300 to 400 watts.
Cobra 2000
bad ground inside radio or cold solder . Be careful of rf burns.
148 mic wiring white d104
five pin /4 pin? (white D-104?)
five pin= 1-audio,2-shield,3-RX,4-comm,5-TX
4 pin=1-shield-comm,2-audio,3-TX,4-RX
Have not used my cobra for some time ...sine
Center the antenna on the vehicle, then check the SWR on channel 1 and channel 40.
with the switch in CAL position, key radio and use the swr/cal knob to
set the meter so the needle is just touching the end of the red area on
the right-hand side of the meter.
Once calibrated, unkey and switch
the switch to SWR and key up again. The lower the reading, the better. If the SWR is Higher on 40,
the antenna needs to be shorter.. if its higher on 1, then the antenna
needs to be longer.
if it dont transmit period on AM, then there's an internal glitch :)
Not finding what you are looking for?
