DR1200.2

NOTES: Some TNCS have a low input impedance on the RX audio line.  The KPC-1
       is 10 ohms, the KPC-2 is 600 ohms, but the PK-232 is 10Kohms.  The
       lower impedance TNCS may "kill" the receive audio when you plug them
       in.  The cure is to remove the offending load resistor in the TNC!
       If you do this, leave one end of the resistor connected for the next
       owner to reinstall, if needed.  If you run regular 8 ohm audio into a
       TNC that has had the load resistor cut out, and don't have a speaker 
       connected also, you may damage your transceiver's audio output stage.

       Caveats aside, the benefit is that now you can turn the audio all the
       way down and still get good copy.  And, you can turn it up to monitor
       the channel without reaching around and fumblirn the audio all the
       way down and still get good copy.  And, you can turn it up to monitor
       the channel without reaching around and fumbling with a speaker plug!

73 de BILL,  Golden, CO
K0ZL@W0LJF.#NECO.CO.NOAM