My curiosity got the better of me, so I went out to the shack and tried again...
You're right, it does work. Selecting PC Mic is necessary in the Mic selection setting, and also the VAC line in the soundcard drop-down on the footer of ESDR3. I'm no novice to ESDR3 but I forgot to do all the necessary steps. Thank goodness an ESDR3 manual is being released soon ....it is long overdue!
Thanks for your steer...it did the trick.
Regards
Paul M0CVX