MicroHAM MK2R User Manual

1 Automatic Band Decoder f or the antenna switches or filters February 2015 OK2ZI Rev 1.0

2 Introduction The Automatic Band Decoder continuously decodes your transceiver's band changes and provides a separate output for each of the

3 Circuit Description The schematic of the Band Decoder is shown in Figure 1. Figure 1. The decoder accepts a four bit binary-coded decimal (BC

4 All nine switches function in the same manner. When their input goes high, their output switches high. All unselected outputs float at ground leve

5 Band data pinout at Yaesu Mini-DIN8 band data connector. I don’t offer the cable between transceiver and the Band Decoder. For the transceivers w

6 On board connection Out of board connection 2. You have 6:1 antenna switch and 6 antennas, and 2 are multi-band antennas. Band Anten