Hello all,
Back at it again.
There seems to be little talk about this modification. This is a strange mod in which you place a variable resistor from L21 to PIN 10 of the MB8719 to achieve a 128 upward channel shift which is amazing compared to the usual 64 upward shift you get from simply grounding pin 10. I have encountered this mod in many of the MB8719 radios I've fixed and I usually scuff at it and remove it without really looking into it and seeing if it's a legitimate mod with...
L21 Frequency mod for MB8719
Back at it again.
There seems to be little talk about this modification. This is a strange mod in which you place a variable resistor from L21 to PIN 10 of the MB8719 to achieve a 128 upward channel shift which is amazing compared to the usual 64 upward shift you get from simply grounding pin 10. I have encountered this mod in many of the MB8719 radios I've fixed and I usually scuff at it and remove it without really looking into it and seeing if it's a legitimate mod with...
L21 Frequency mod for MB8719