n9lea
Member
- Joined
- Feb 12, 2005
- Messages
- 7
I have a Radio Shack 1000-channel scanner hooked up to a Radio Shack 20-176 Ground Plane Antenna. The antenna is mounted to a mast on the roof and is connected to the scanner by coax. The system is definitely light on grounding.
Since I installed this antenna system, I've had sporadic problems with hearing a local FM radio station on the VHF bands. The problem is intermittent and seems more common at night.
When the problem exists, I can clearly hear the radio station, which broadcasts from a tower about 2 miles from my QTH on 105.1 MHz at 6 KW. As I mentioned, it's intermittent. When I hear it, I can hear it the strongest on 159.15 MHz, but it splashes across wide chunks of the 154-159 MHz range, including a few frequencies I like to listen to. When it's on, I can't squelch it out, though the scanner's attenuator will usually get rid of it. Of course, I don't like to run with the attenuator so I can hear other distant stations.
I don't know if this is a true interference issue or if the signal is just so strong that it's overloading the receiver.
Can anyone suggest a solution to this problem? Would some sort of grounding solution be best or a filter of some sort? Or am I just relegated to the attenuator?
Since I installed this antenna system, I've had sporadic problems with hearing a local FM radio station on the VHF bands. The problem is intermittent and seems more common at night.
When the problem exists, I can clearly hear the radio station, which broadcasts from a tower about 2 miles from my QTH on 105.1 MHz at 6 KW. As I mentioned, it's intermittent. When I hear it, I can hear it the strongest on 159.15 MHz, but it splashes across wide chunks of the 154-159 MHz range, including a few frequencies I like to listen to. When it's on, I can't squelch it out, though the scanner's attenuator will usually get rid of it. Of course, I don't like to run with the attenuator so I can hear other distant stations.
I don't know if this is a true interference issue or if the signal is just so strong that it's overloading the receiver.
Can anyone suggest a solution to this problem? Would some sort of grounding solution be best or a filter of some sort? Or am I just relegated to the attenuator?