When you notice this are you out of compliance (5% ratio / 3 degrees phase)? Do the parameters come back to normal after the fog lifts? Is only tower 3 affected? My experience has been is the operating parameters are actually changing on one tower i has an effect on the other towers' parameters too. May have an issue with your sample system.
Lou Mueller - Louis Mueller Broadcast Service
Altamonte Springs, FL
On May 15, 2017 at 10:25 AM Tom Van Gorkom <email@example.com> wrote:
Any AM guys out there? We have an AM 4 tower directional array. For the first time in my 4 years here, two foggy mornings in a row affected adversely tower 3, the negative tower in the night pattern, but strangely, it had no affect on the tuning parameters of the others that I would normally see if it was really out of tune.
I cleaned up all vegetation around the towers just in case, checked and cleaned the relays, checked other connections but could not see anything obvious. It's running perfect otherwise and I am not sure how to reproduce the problem.
Tom Van Gorkom
Radio Esperanza Engineering, KRIO AM/FM, KOIR FM
Rio Grande Bible Institute
4300 S US Hwy 281
Edinburg, TX 78539