——– Original Message ——–
|Subject:||AM noise from a car wash|
|Date:||Sat, 14 Jul 2012 18:40:41 -0700|
|From:||D. Ramos <dr2500 (at) verizon.net>|
Hello: I read the item in today's CGC issue regarding wideband noise from the route signs mounted on MTA buses. I got another source you might want to check out:car washes. A few months ago, I took a company car to be washed at a self-serve car wash. This is the kind of car wash where you sit in the car while a rolling mechanism goes back and forth spraying water,liquid soap and wax. While waiting for the car wash to begin, I decided to listen to a Dodger game on the car radio. I believe the station was KMPC on 830 kHz.The moment the mechanism started, a loud sweeping whine came on and wiped out the signal from the ballgame broadcast.This whine was strong enough to block all the other stations on the AM dial.This whine continued until the mechanism was done with the car wash cycle. I wondered if this whine noise can be heard a distance away since the signal sounded very strong. Does anyone on this list know what kind of electronics would be on this type of equipment to cause such a noise? Another noise source to consider!!