the link

David McKenzie k1fsy at
Mon May 20 17:00:04 EDT 2013

made some progress today with the new link controller. Keying circuit and
audio appear to work fine, however RTS is automatically set HIGH when the
GPIO pin for RTS is set to work as part of the serial port so at the moment
if the software isn't running the interface will be keying the radio
because the software holds RTS low to inhibit tx.

Bad news is that my HTX-212 doesn't sound like its working so well anymore,
lots of CPU noise on RX and can barely hear the HT through it. Looks like
we will be in need a replacement rig.

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