#CB RADIO POWER BOOSTER SERIES#
The new units don’t have the MB3756 Voltage Regulator, They have decided to further cheapen the radio by doing away with it! and installed a 3 pin voltage regulator in its place with a series resistor on the 8 volt pin, on the input pin there is no voltage drop, on the output pin there is. So I really got concerned! After checking the oscilator frequencies I find that they change when I modulate! What the Hell! they are not supposed to change, they are supposed to be rock solid! I placed a volt meter on several test points and found that the voltage to the oscillators is changing with modulation! So I start looking for the reason for this and ran into the cause right away. This time is the same as the last, they can’t clarify me! Then I went to Sideband, now people say they can’t “clarify” me in, What! So I tried some others on the band with the same results, can’t clarify me! So I’m thinking maybe my oscillators are off frequency so I check them and find that they are a little off so I align them. So before doing anything else, I hooked it up to my antenna to get some radio checks, well, AM was OK, nothing to write hone about but clear and clean. I had a customer send me a 148 NW ST for peaking and tuning for better receive and transmit. Now we have this new radio, the 148 NW ST, It looks real pretty at night. Of course this is all history, they fixed that problem. watt resistors throughout the whole radio, don’t know how many radios failed in the field because of this, I had several myself that had a failure of several resistors that had previously been 1/2 watt.
#CB RADIO POWER BOOSTER PC#
The first thing that happened to Cobra was that Uniden wanted to raise the price on there PC boards, Cobra did not like this so they got some other company to make there boards cheeper! The first thing that happened was that they started using 1/6 Th. Their Sideband radios such as the 146, 148 gtl and 2000 were superb, they were stable and a radio you could be proud of. This page is for informational/educational use only and comprised of archival URL information with back links.Ĭobra has really shot themselves in the foot with this new radio, why you ask? I’m getting to that but first let me say that Cobra has been the industry leader in producing good quality CB radio’s down through the years, there was the great line of Mobil “AM” radios such as the 25LTD, 29LTD.
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