• You can now help support WorldwideDX when you shop on Amazon at no additional cost to you! Simply follow this Shop on Amazon link first and a portion of any purchase is sent to WorldwideDX to help with site costs.
  • The Feb 2025 Radioddity Giveaway Results are In! Click Here to see who won!

Reply to thread

Robb,


Pics are uploading as I write this. You can put a "swing" mod in the 148/2000/Madison chassis by adding a diode in series with R228, it's a 560 ohm 1/4 watt resistor. No idea what this does for any kind of negative peak compression, but I know it modifies the AM pass regulator circuit. However if this is done, you MUST change out the 2SC1419, and replace with a GE-66/NTE152/2SC1061, otherwise you will knock out the pass regulator, it can't handle the extra current pulled by the higher modulation peaks.



~Cheers~