With a good external antenna it might on a good day hit 5 miles.
With the supplied antenna more like 2 miles.
Antenna quality and proper tuning of the antenna is everything when it comes to range.
As far as wattage goes that's 4 ways pep. Cb radios are AM, amplitude modulation. When you speak into the mic and observe power out put it will vary as you speak. Initially it will swing to 4 watts. But then the modulation limiter will kick in and you will see around 2 maybe 3 watts.
You can remove the modulation limiter. Usually by clipping a diode or removing a transistor. At that point depending on the final output power rating of the final transistor you might see 6 to 8 watts.
A Cobra 149 or Uniden President grant radio could hit 29 to 25 watts once modified.
And a full wavelength in the 11 meter band is 32.125 feet not 40.
As for antennas, you can get a half wave antenna that's only 3 foot long, that's accomplished by winding 16 feet of wire around a fiberglass rod.
Zugzub t1_ja549cv wrote
Reply to comment by dzlux in Been in every car I’ve had since 1986. by 710dabner
There's no way that thing has a 10 mile range.
With a good external antenna it might on a good day hit 5 miles.
With the supplied antenna more like 2 miles.
Antenna quality and proper tuning of the antenna is everything when it comes to range.
As far as wattage goes that's 4 ways pep. Cb radios are AM, amplitude modulation. When you speak into the mic and observe power out put it will vary as you speak. Initially it will swing to 4 watts. But then the modulation limiter will kick in and you will see around 2 maybe 3 watts.
You can remove the modulation limiter. Usually by clipping a diode or removing a transistor. At that point depending on the final output power rating of the final transistor you might see 6 to 8 watts.
A Cobra 149 or Uniden President grant radio could hit 29 to 25 watts once modified.
And a full wavelength in the 11 meter band is 32.125 feet not 40.
As for antennas, you can get a half wave antenna that's only 3 foot long, that's accomplished by winding 16 feet of wire around a fiberglass rod.