ki4lqu
Member
I have 2 Radio Shack scanners (Pro 94 and Pro 97) When I lived on the west end of town, I was able to trunk my local public safety system with no trouble using the default duckie that came with the scanner.
I've recently experienced a serious picket fencing effect ever since moving to the west side of town, fluttering noise on the local 800MHz trunked system. Some channels on the system are clear as a bell, and others go to town fluttering and spitting. I've tried yagis, amplified antennas and even specialized 800MHz whips., all to no avail.
There are places in the room where it will reduce on some frequencies, but it is always ever present on at least one channel. When I configure one channel for clarity, some of the others start fluttering again. The fluttering is bad with a decent 800MHz whip while out in the neighborhood, so I know it's nothing locally here interfering. Both of my RS scanners do this.
I've had several suggestions, including intermod filters. I'm sad to say that FM, VHF and UHF pager notch filters do nothing to reduce this flutter interference. I have yet to find cellular or Nextel filters.
I'm in a position at the moment where I can't get the antenna out on a mast, so I can't try increasing height.
I am wondering if this is an issue with the RS front end for 800MHz. Would another model/brand of radio remedy this? I'm not very familiar with the front end selectivity for 800MHz, however I do know that a radio on the system would not experience the same interference as these scanners, both listening to the same frequency.
I've recently experienced a serious picket fencing effect ever since moving to the west side of town, fluttering noise on the local 800MHz trunked system. Some channels on the system are clear as a bell, and others go to town fluttering and spitting. I've tried yagis, amplified antennas and even specialized 800MHz whips., all to no avail.
There are places in the room where it will reduce on some frequencies, but it is always ever present on at least one channel. When I configure one channel for clarity, some of the others start fluttering again. The fluttering is bad with a decent 800MHz whip while out in the neighborhood, so I know it's nothing locally here interfering. Both of my RS scanners do this.
I've had several suggestions, including intermod filters. I'm sad to say that FM, VHF and UHF pager notch filters do nothing to reduce this flutter interference. I have yet to find cellular or Nextel filters.
I'm in a position at the moment where I can't get the antenna out on a mast, so I can't try increasing height.
I am wondering if this is an issue with the RS front end for 800MHz. Would another model/brand of radio remedy this? I'm not very familiar with the front end selectivity for 800MHz, however I do know that a radio on the system would not experience the same interference as these scanners, both listening to the same frequency.