Please find enclosed a link to the audio from the Lincoln recorded at around 1200km in Eire by Mr.Noel 29AT057 and kindly sent from him and Peter 29AT118 so you can hear how the sound was from the standard Lincoln II with CR577 Mike and Vertical antenna.

Equipment:

President Lincoln II
RF Limited CR 577 Mike
30w
Sigma Eurocomm Venom 1/2 (Model with no radials)

And this is from a mike that some “technical people” call quiet on air.