Wednesday, April 29, 2015

3000 baud and nothing wrong!

Most VHF/UHF rigs have "9600 baud" capable ports built into them.  Without going into a long-winded explanation, the port bypasses the pre-emphasis circuitry of the radio so that 9600 bps operation is possible.  Plus, you have to get a 9600 baud TNC, like the Kantronics KPC9612.  Looking at a few hundred dollars for that.

So, most of us have grown accustomed to "1200 baud" only on non-9600 baud radios.

Scott KD5NJR and I have experimented with the new "8PSK" modes that were added last fall to the FLDIGI suite of programs.  Running 8PSK-1000 is the equivalent to running 3000 baud.  Yes, two and a half TIMES faster than a standard TNC.  I was sent him a 77K file in less than 5 minutes.

I encourage everyone to try out the super-speedy 8PSK modes on VHF/UHF, especially considering you will have no added cost outside of your soundcard interface to the radio.

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