The First 100 Years Are The Hardest

Ken Wells, NM9P has posted several good videos showing how to use FDX on the flexradio to hear your own audio signal as it sounds on the air, post processing vs the MON function with is pre-audio signal processing Set up 2 slices on the same frequency and same mode on a clear frequency On Slice A, select that as TX and reduce your RF power to 1 or 2 watts into a dummy load or resonant antenna On Slice B select the RX antenna (blue) to XVTA. Turn On FDX Set the receive volume - when you transmit on Slice A you'll be able to hear your self on Slice B. There will be a slight delay in the received audio.   Use the quick record / playback function built into the flex radio slice if you want to transmit first and listen again. https://www.youtube.com/watch?v=LytzQGpE5ZM https://community.flexradio.com/discussion/8014278/using-fdx-to-set-up-your-tx-audio https://community.flexradio.com/discussion/7987118/nm9p-videos-on-adjusting-the-flex-6000-series-transmit-audio

The FlexRadio 6400 uses a ‘pseudo-balanced’ MIC input but the manual is not very helpful when it describes this as “ mic (+) and mic (-) lines are balanced all the way to the input of the A/D converter, where the mic (-) line is DC grounded.” Fortunately I was able find this circuit from Dale K4DC on the flexradio community support forum originally designed for the Yamaha CM-500.  This design works with my Bose QC-25 headset (2014) and my Koss SB 45 (2021).   I made two adapters, first one without the 10pF capacitor because I didn’t have one on hand.  I did not notice any impact on transmit audio quality.  I added the capacitor a few days later for permanent use.  I get great audio reports.  Reminder that the electret MIC requires you to enable BIAS voltage in SmartSDR radio set up.  For the BOSE headset I’m using this mic boom adapter (2021): https://www.amazon.com/Cable-Boom-Microphone-Playstation-QuietComfort/dp/B07W3W9LHV 73 Chris de WX7V Reference thread on the FlexRadio Communit

 Episode 14 of Ask Dave.  Good beginners guide on how to complete a simple QSO on CW.   Includes the proper abbreviations, pro-signs, and Q-signals.  Full Video is here.   https://www.youtube.com/watch?v=UY6Q9_Qmk8Q 1. Calling CQ / Answering CQ: 2. Exchanging Signal Report, Name and QTH: 3. Brag to extend the QSO by exchanging Rig, Antenna and Weather info: 4. Completing the QSO 73 and Two Bits!