just getting back into things after a few years, and decided to tune up my base. ive got a Galaxy 11b, thats been with me for several years. i got bored and had parts just looking at me so i decided to make it mosfet. i still had the cb tricks info on dual final swaps for the 360014b boards, so here goes.
i used 13n10's rather than 520's. never had a lot of luck with 520's. after replacing all the components, i turn it on to set the voltages on the fets. set the gates to 1.9 volts and made sure every thing was kosher. first audio netted about 55 peak. then less with each key up after until i had just enough to produce a reading on the freq counter. ok.. replaced the 13n10's with 520's. same result. i replaced a few of the caps that were in the swap, and can get a 1 watt carrier for a second or two then i get a bad hum that drives the wattage and modulation up. i have good talkback and PA. the variable power no longer works and now when i turn it on, it takes about 3 seconds before everything comes on..
another note, i have about 8 volts on everything surrounding the board. the case, heatsink, antenna jack... any direction would be appreciated
i used 13n10's rather than 520's. never had a lot of luck with 520's. after replacing all the components, i turn it on to set the voltages on the fets. set the gates to 1.9 volts and made sure every thing was kosher. first audio netted about 55 peak. then less with each key up after until i had just enough to produce a reading on the freq counter. ok.. replaced the 13n10's with 520's. same result. i replaced a few of the caps that were in the swap, and can get a 1 watt carrier for a second or two then i get a bad hum that drives the wattage and modulation up. i have good talkback and PA. the variable power no longer works and now when i turn it on, it takes about 3 seconds before everything comes on..
another note, i have about 8 volts on everything surrounding the board. the case, heatsink, antenna jack... any direction would be appreciated