The AA8V 6x2C Crystal Controlled Converter
by Greg Latta, AA8V

How to Operate the 6x2C Converter

Click on the image for a larger view. Click here for a super detailed view.

Click on the image for a larger view. Click here for a super detailed view.

Connecting the 6x2C Converter:
Connect the antenna to the antenna input (ANT) of the 6x2C. Connect the output of the 6x2C (RCV) to the receiver input. With the 6x2C mode switch in the Off (O) or Standby (S) position the receiver should operate normally.

Operation:
1. Turn on the 6x2C by placing the mode switch in the Standby (S) posiiton and allow it to warm up. Select the desired band and turn the RF gain (GAIN) control all the way up.
2. Turn on the receiver. It should operate normally. Tune the receiver to the correct output frequency for the chosen band. If the receiver has an antenna trim control, adjust it for maximum noise.
3. Switch in the converter by placing the mode switch in the Run (R) position.
4. Carefully adjust the mixer tuning (MIX) control until you hear a rise in the background noise. The tuning can be quite sharp.
5. Carefully adjust the antenna tuning (ANT) control for a further rise in the background noise.
6. If the receiver has an antenna trim control readjust it for maximum noise. The setting may be different from the setting without the converter switched in.

If you can't hear a rise in the noise when performing the previous steps, try turning the GAIN control completely the other way. You may have it wired backwards. (When the GAIN control is set for maximum gain the resistance from the control wiper to ground should be essentially zero ohms.)

Tune around with the receiver and you should now be able to hear signals. When going from one part of the band to another you may have to readjust the ANT and MIX controls.

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If you have any questions or comments, you can send E-Mail to Dr. Greg Latta at glatta@frostburg.edu