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The board is fully assembled
The required connections for the FTDX-1200 are on the top of the board
A modern adaptation of the former Sherwood board
It is possible to make any Kenwood hybrid unit transmit AM by adding a modulator to a low level RF stage
This handy little buffer board is barely the size of a quarter
Drake R-4A R4B Product Detector Upgrade The board is fully assembledThe dual diode product detector in the 11 tube Drake R 4A (aka R 4A "late") and the Drake R 4B has poor dynamic range, promoting distortion on AGC attack. This manifests itself as annoying clicking and popping on strong signals. A modern adaptation of the former Sherwood board, this active Gilbert cell detector will correct this deficiency. Installation takes only about 30 minutes but does require basic soldering and schematic reading skills. Board
