[hpsdr] FWD/REV connection

[Doug W5WC]

Luke,

OpenPowerSDR v1.19.3.4 & up are getting their external inputs from the
following locations:

On Penelope's DB-25 connector.
Pin 7 (AIN2) - reflected power
Pin 20 (AIN1) - forward power
Audio Grounds 8, 14, 17

The ADC on Penelope has high impedance inputs. Insure inputs have a
pull-down resistor or it only sees the voltage from AIN1. This drove me nuts
during testing until Phil kindly straightened me out.

Until I can test more I have not added the SWR reading to the display. The
calculation for SWR is using the fwd & ref power readings and has no
adjustments.

73 Doug
W5WC



 1314239724.0