I want to use a DigiRig with my MICOM 3T transceiver for VARA HF / Winlink comms. I have a schematic (https://www.commswg.site/micom_signalink.php which I think will be needed between the radio and the DigiRig. Could you take a look at this schematic and tell me if a custom cable can be made (that is, made by DigiRig) for the ends of the audio and serial cables from the DigiRig to the interface depicted on the schematic. Before I buy the parts for the interface I would need to know what connectors would be on the end of the DigiRig cables so I can buy the appropriate receptacle connectors.
Randy,
You can match the MiniDin6 connection in the drawing you referenced with Digirig’s MiniDin6 cable and that will give you the pinout for the cable end-to-end:
As an alternative, and for what it’s worth, I am using Bonnie Crystals KQ6XA design for the ALE audio breakout project board for my MiCOM-Z interface. With the help of Tom (Chief Tech engineer at Royal Communications). For the MiCOM-Z the pins 43 and 44, for RXA, which are not part of the radio squelch circuit as suggested above with pins 4 and 5. I am also going to use the low distortion audio transformers, again from Tom, SP-70 Triad Magnetics.
The prototype project board “should” be done shortly. Followed by the final build with the updated material and drawing. I also have not done the speaker mod changing the R44 on the Lord Board from 200k ohm to the recommended 110k ohm resistor. Yet… Yes, the MiCOM-Z stock speaker will wake up the sleeping at the lowest setting! Even with two layer of sound absorbent foam over the speaker front.
You can find the MiCOM information here: Micom HF Transceiver for ALE Ham Radio
The posted information is for the MiCOM 2 and 3 models. I hope to have the MiCOM-Z done soon after testing of course.
73, JohnF WQ6N
