In 1999 I wrote:
Jan Panteltje
29-08-99 My neigbour was (many years ago) just like me, active on CB (27MHz). Now one day all my reception disappeared in noise. I connected a scope across my GPA, and it was 10 or more volts. So I connected a LED and that worked too. So I called the guy and asked him 'did you get a linear?' He was very embarrased (4 W is maximum allowed here on CB). He has stopped with the hobby I think, and moved somewhere else, Distance between his GPA and mine, mmm about 15 to 20 meters.So, 13 years ago... BTW 'GPA' is a half wave vertical, so about 5 meters on 27 MHz.