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Clarifier to KC shift mod: help needed
Posted: Sunday 21st May 2006, 10:28
by Ron Fouler
I have a Lafayette 1200FM (similar to MM2, Jumbo1, identical mainboard), and want to change the clarifier to a KC shift to make it easier to get UK40 channels. What do I connect to where and how? Or, can anyone direct me to a webpage with the necessary info?
TiA
Posted: Wednesday 24th May 2006, 10:30
by zodiac
Ron,
If the front board is the PTSY016AOX then this will unlock the clarifier to a KC shift.
Remove D5 and R26. Connect the unused clarifier pin on the control to a 10k resistor and connect the other end of the resistor to the emitter of Q44 the regulator. D7 is the varactor diode by adding a 5.6uH coil to the + end of it, it will give you more shift.
Dave.
Posted: Wednesday 21st Jun 2006, 12:44
by Ron Fouler
Plan on giving this a try soon. Did you see my post on modding the Mod for FM? I need to make this a versatile radio to justify keeping it to the Spouse
