I have been having issues with noise in my radio. Every night I have about 3 S units of noise starting just about dusk every night lasting until morning. I have finally tracked it down to my dusk to dawn yard light. I use RG-213 coax on a Colossal Zero Five Antenna. I have installed 4 ferrites on my coax just before the radio with little help. I run a Yaesu FT-710. My SWR is less than 1.5 to 1. I am sure others have had this problem and would like to hear what others have done to eliminate the noise.
Noise, I found the problem
- Thread starter billdean
- Start date
prcguy
Member
- Joined
- Jun 30, 2006
- Messages
- 18,595
- Reaction score
- 14,728
You usually have to kill the noise at the source as it sounds like its producing interference on your frequencies of interest and ferrites on your coax won't address that. What kind of light is it? Incandescent, fluorescent, LED?
It's a HPS light that hasn't worked in year. I guess the ballast is still trying to fire the light causing all the radio noise. I disconnected this morning and the noisy is gone.
prcguy
Member
- Joined
- Jun 30, 2006
- Messages
- 18,595
- Reaction score
- 14,728
That will do it. I got hired to find an RFI problem taking out a C band satellite feed at a huge DirecTV site and fount it to be a HPS light that was out in front of the satellite dish in a parking lot. It had gone dark at some point but all my equipment at C band and also VHF eventually pointed at the light and when standing right below it you could see faint blue arcing up inside the light. I banged on the light post with a 2X4 and it really lit up the RF spectrum and after having their maintenance people cut power to the light it cleared up. That thing was producing RFI way up past 4GHz.
