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RF Speech Processor Adjustment Manual Error


 

Page 31 (c) wants to monitor pin 11 on the "Filter Unit". There is no pin 11 on the filter unit and further, the filter unit is a stage behind the NB board and makes no sense for these adjustments.

Anyone have any knowledge here?


 

?I have never had good luck aligning the RF processor according to the book.? Here is what I do and what I know and I have had good luck with this.? I am going only by memory as I am away from home without the instruction book or rig available to look at, and it has been a while.? Going by memory now, there are three pots; one adjusts unity gain through the circuit with the RF processor switch OFF.? It is set once and not touched again.? Of the remaining two pots one adjusts unity gain with the RF processor ON to match the level set by the gain pot used with the processor switch OFF.? I use a CW carrier and a watt meter to match the levels.? The third pot adjusts the amount of RF clipping.? I just set that using the mic and talking in to it and I tweak it up until I get 6 db or so of clipping or so determined by looking at the non-pep reading watt meter.? You should see the average power go up on the watt meter when you advance the pot.? Then go back with a carrier and match the RF processor ON unity gain pot with what you get with the RF processor OFF.? Don't touch the pot used to set unity gain with the RF processor switch OFF.? Switch the processor ON and OFF and match the levels.? The RF clipping pot and the RF processor unity gain pot interact somewhat.? Well that is what I do, I've never had luck feeding a tone into the mic jack.? Sorry I can't tell you which pot is which without having the and book to look at.? Also my memory may not be exactly correct but this is the best I can do.? It is an intuition and by hook and crook method but with experimenting it works.? Good luck!


 

Yeah, what I am doing. I have found so many manual errors....


 

I just noticed, only TWO of us FT-301 nutters.
Too bad.