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Hello, I found this information in a post for the Stryker 447 hpc2, it looks like you were initially sent the wrong schematic, is the information for the 497hpc? Thats what I need it for, thank you in advance for your help.

C189 is a spot to place diode/resistor combo.
R249 AM limiter
VR14 am mod pot

Change R241 to 15 Ohm.
Im back in the game soon after almost 30 years. Im working on a setup, and ill be back modulating again soon