CONAR RECEIVER MODIFICATIONS !!!

"....a face only a mother could love."

BFO CW-STBY Switch Mod

This mod turns ON the BFO in the CW - and - STBY positions.

The purpose of this mod is to turn "ON" the BFO (Beat Frequency Oscillator) in the switch STBY (Stand By) position. This is necessary to monitor your transmitter signals through the CONAR receiver. This mod is fairly easy to do.

Here are the steps needed:

• First cut the wire coming from the BFO Tube V3 which is connected to the present swtich.
• Cut the wire coming from the diode dectector D2 as well.
• Move detector wire to the side and cover end with tape so no posibility of shorting.
• Remove the old STBY switch and install the new one.
• Select one of the 4 poles to be used on the new switch.
• Jumper two of the solder lugs of the switch as shown below.
• Connect the BFO wire to one of the solder lugs of the switch.
• Run a wire from wiper solder lugs of the switch to the nearest ground lug.
• Double check you work - look for shorts.

• Power the CONAR receiver and verify BFO operation on both CW and STBY switch positions.

This completes the BFO CW-STBY Switch Mod

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Conar Transmitter Manual - and - Conar Receiver Manual