|You name the noise source, and I've got them all in my suburban CA neighborhood. EV and Battery chargers, solar panel inverters, plasma TVs, LED and grow lights, sodium street lights, motor noise, electrical power line noise. I've got them all! |
I bought this antenna primarily as a Rx antenna on 40m and 30m. My noise level on those bands can be anywhere from S6 to S9+. I decided to give this mag loop Rx antenna a try, and I'm glad I did. I have it installed on a short 8' tripod mounted mast in my backyard, without a rotator. This may be temporary, but I've weatherized all of the cable connections.
This antenna has brought the broadband noise level down to S3 or less. Sometimes it is S1. This is in a 3 KHz SSB bandwidth. If the antenna is oriented properly, I can null out the huge 20 KHz birdies from one of my neighbor's battery chargers, which has been plaguing me for some time. For skywave signals, I've found the antenna to be pretty omnidirectional. The Rx signal levels are perhaps 1 S-unit down from my vertical Tx antenna, but the SNR through the loop is much higher than the vertical. I don't have a 80m or 160m Tx antenna, but I listen quite a bit on those bands, and this antenna really seems to perform well, and has extremely low noise levels. I experimented a little with this antenna on the higher bands, but my 2 el hex beam at 37 ft has better performance on 20m and up. This is primarily a low band antenna, IMO.
I haven't decided if I'll roof mount the loop yet, or if I'll put a rotator on it. It's working just fine now on a tripod in my backyard. All in all, this is a fine antenna, and the construction is high quality. I really like the ability to switch off power to the preamp when transmitting. The antenna is a bit spendy, but well worth it if it allows you to be able to operate, when you otherwise could not. 73, Roger- AC6BW