Could some tell me what the properdriver and final bias voltages are for a galaxy 959? cant find a service mabual for the new mosfet version online. Thanks for anyones help
It's was built with mossfets from facktory , it had irf520 as final and driver and I replace the irf520 with irf 520 Ns ,it now trans mits off freq and the radio dims when I key it up ,could the mosfet irf520N not get enough power ,I left the bias and final power alone that's all stock to the irf520The 2547 has a frequency display. If it is off frequency while transmitting, the counter should give this away.
And if the counter shows the correct channel frequency, your "sounds off frequency" symptom has a different cause.
Was this 2547 built with MOSFET finals, or is it a older version that someone modified to use them?
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I’m not an authority here but I think you’ see better results if you got away from the N’s and used a regular 520.
But I have some N’s myself, never used them, so I’m curious to see the outcome of this as well.