[ICOM] PRO III bias setting
hamop
k5yy at cox.net
Sun Aug 12 12:21:52 EDT 2012
Thought I would again post that I need someone with a PROIII service/tech manual to tell me how to adjust the bias on the drivers and finals. Am having one driver replaced and instead of just leaving the previous bias at 5.3 volts to its gate, is there a specific driver idling current that the bias pot is used to set? Same with the finals, as a final check, what voltage or final current setting is advised in the manual, set by the 2 bias pots? We are not sure if you set idling current to a certain value or what. There should be a brief section that describes how to set the 4 bias pots for drivers and finals. Suspect it relates to a resting, no drive, driver current. THANKS for any brief description or recap on what that service section says about bias settings.
San K5YY
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