Author Topic: Biasing the Rangemaster  (Read 7576 times)


  • Electron Doctor
  • *****
  • Posts: 904
    • View Profile
Re: Re: Biasing the Rangemaster
« Reply #15 on: March 03, 2013, 01:14:58 PM »
Awesome, Frank.:)
one louder.


  • Diode Destroyer
  • *
  • Posts: 1
    • View Profile
Re: Biasing the Rangemaster
« Reply #16 on: April 14, 2014, 08:50:46 AM »
Hi everybody, I just finished the building of my java boost following this schematic:
Everything seems to be in the correct place but I have a quite low output.
I set the two trimmers at 68k and 3.9k as suggested on geofex pdf, then I set the bias at -7.2v measuring between the collector leg and the +9v input.
Is this the correct way to set the bias? How can I have a louder output?