Transistors
Install the BF-256 JFET transistor in the position Q1. This is a plastic T0-92 case part and it is static sensitive so use
care in handling.
Note to orient the body of Q1 with the board layout. The center leg will need to be bent back slightly to go into
the offset center hole in the board.
Next, locate and install the BC-547 bipolar transistor in the location Q2 on the board. This part is also in a black
plastic, TO-92 case and is installed in the same way as Q1.
Power Switch
Locate and install the DPDT switch in position S1 on the board. This switch has 6 pins that fit into the holes in the
board. The orientation of the switch does not matter.
Solder a single pin first and check that the switch is seated on the board. If not, heat the soldered pin while
pressing the switch into the board and hold it while the solder solidifies.
Repeat this with a pin on the opposite end of the switch. This will hold it in place while the other 4 pins are
soldered.
Gently press the supplied button cap onto the blue switch shaft as shown above.
BNC
Note: If you plan to mount this kit in a case or build into another assembly where input and output connectors will
not be needed or if you are using connectors to be mounted on the case you will not want to install the on board
BNC connector.
Solder the supplied BNC connector on each end of the board in the position marked J2. Be sure that the
connector is fully seated and both small leads extend through the board. Then solder the support pins one at a
time.
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