VLF CW AM Transceiver project for MUMBLE iCW - prototype 1 - The Receiver section

13 views

Skip to first unread message

Chuck Vaughn

unread,

Feb 10, 2022, 2:47:26 PM2/10/22

to iCW - internet CW

1st assembly test for the iCW 16Khz AM Transceiver project - Receiver section Mumble client receives a 16Khz AM CW signal - mumble client output goes to a Rohde's AM Detector -

Rohde's AM Detector output goes through a Low Pass Filter to reduce the 16Khz signal from the Rohde's demodulated 658hz CW AUDIO -

output of the Low pass filter goes to the input of a CLASS D 30 watt audio amp-

output of the audio amp goes to a 658hz series resonant LC filter that reduces the 16Khz AM carrier signal by at least 30 db before it goes to a Radio Shack Communications Speaker http://www.pan-tex.net/usr/r/receivers/elrpicamdetect.htm

aa0hw

unread,

Feb 11, 2022, 3:03:15 PM2/11/22

to iCW - internet CW

2nd assembly test for the iCW 16Khz AM Transceiver project - THE LPAM CW AM VLF 16Khz TRANSMITTER circuit test