Okay so I did the mosfet supertune mod on my 06' China made 29 ltd classic. Now I'm having trouble pulling a good swing pep beyond 7 watts. I dead key at 3.5 watts and swing to 7 watts. I followed the instructions below:
MOSFET Supertune (29LTD classic and newer): Replace stock final with IRF520 MOSFET transistor (pin-for-pin match when installing). Remove R56 and in its place install a 470-ohm resistor in series with a common switching diode (1n914 or similar), with the banded end of the diode towards the front of the radio. Remove C53 and solder it across C59. In C53's place solder a 3.3k resistor. Remove C 61 and solder it across C62. Remove C126. Remove R55 amd solder a 22pf cap in its place. Remove the slug from L14. Replace C71 with a 33-47uf cap. Turn VR4 (AMC) counterclockwise fully. Gently spread L13 and L12 and tweak the spreads for best PEP when modulated. Tweak L20 and L17 for best PEP when modulated. After tuning is finished, set VR4 to half-way.
***Triple checked everything, even tried another mosfet final and made no difference. Adjusted l20 and l17 just to find that they were already at peak. Adjusted the spread open on l12 and closed l13 for peak.
Please help, can't get anymore and I keep hearing about the mosfets in these 29's doing a fine job of 30 pep?
MOSFET Supertune (29LTD classic and newer): Replace stock final with IRF520 MOSFET transistor (pin-for-pin match when installing). Remove R56 and in its place install a 470-ohm resistor in series with a common switching diode (1n914 or similar), with the banded end of the diode towards the front of the radio. Remove C53 and solder it across C59. In C53's place solder a 3.3k resistor. Remove C 61 and solder it across C62. Remove C126. Remove R55 amd solder a 22pf cap in its place. Remove the slug from L14. Replace C71 with a 33-47uf cap. Turn VR4 (AMC) counterclockwise fully. Gently spread L13 and L12 and tweak the spreads for best PEP when modulated. Tweak L20 and L17 for best PEP when modulated. After tuning is finished, set VR4 to half-way.
***Triple checked everything, even tried another mosfet final and made no difference. Adjusted l20 and l17 just to find that they were already at peak. Adjusted the spread open on l12 and closed l13 for peak.
Please help, can't get anymore and I keep hearing about the mosfets in these 29's doing a fine job of 30 pep?