Sunday, October 4, 2020

RCForb testing with foot switch

W4BXI is using a custom circuit to interface an ordinary foot switch to the TX function of the RCForb client program on his Windows PC. We have observed occasional stuttering in his transmit audio during the first 2 seconds or so after the foot switch is pressed. Today I made a recording of his contact on 40 m, transmitting from W4UOA, with a Virginia station. The full 3.5 minute recording is available below for listening.

QSO on 7193 kHz

You can hear the audio stutter just past at about 2:24 in the recording. Below is a 2-second excerpt from the recording along with a screen capture of the audio waveform that shows several quick drop-outs as received in Baton Rouge. 

2-second portion with audio stutter

Additional testing is being arranged to isolate the cause of the drop-outs.


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