RGO One - Excessive mic gain at lowest setting - mod by Boris, LZ2JR

RGO One - Excessive mic gain at lowest setting using QRP power level modification by Boris, LZ2JR.

If you realized the excessive mic gain on your RGO One even at lowest setting here is what Boris found after deep investigation and many tests... "Ok, then we assume got problem only on QRP levels. Probably this is related to individual voice characteristics. Since my voice is not so loud I am afraid I adjusted mic preamp to fit my own voice characteristics.

Here is what can be done:

1. Lift bottom cover and locate SSB GEN board (see the pic attached)

2. Place in parallel or replace R2 - 270kOhm with 100kOhm resistor (0805 case)... 

(Somebody reported even 27kOhm change works fine)

73 - Petr, OK1RP