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Galaxy DX66v3 Mod limiter location
- Thread starter Rc123
- Start date
Removing or cutting R249 merely disables the AMC. The diode goes somewhere else. I do not condone disabling the AMC or ALC circuits, because this is what causes 99% of the hash, trash, splash and bleedover in other people's receivers. The AMC responds to Negative going voltage swings. A properly set up NPC-RC on an Oscilloscope will allow you to reduce your carrier, and have higher positive peaks, up to the positive rail, before it flat-tops. The Negative going voltage swings will (should) never hit Zero volts, where the RF is cut off in between syllables. Some even go to the extent of "Box Cars" where the RF comes out in square wave pulses, which cause a lot of audio harmonics. By leaving R249 intact, this gives you some amount of automatic feedback adjustment to keep it from being overmodulated.
Shadetree Mechanic
Delaware Base Station 808
The limiter attack speed can be lowered so it doesn't clamp as hard when it kicks in. Should be very similar to the 86v.
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Galaxy DX86V mods
Careful is showing off your work @Shadetree Mechanic - you'll find yourself with a lot of buyers wanting a piece of you...
Would you happen to know the Npc mod for it to make sure I do it right?
I can’t find one. Should be the same as a connex 33hpc1 it’s kinda like a 86v also somewhat without ssb
It’s a whole different board eptdx2912z also the same as a galaxy dx55f. If I can remember right
Wanted to give a update. Followed the instructions you posted awhile back on the galaxy 86v and they worked. Thank you my friend.