RFI Common Mode Noise Filter Kits for Generic Antenna Switches - Isolate Non-Selected Coax Braid Noise!Product DetailsCoax antenna switches generally only switch the center conductor of the coax and all the coax braids remain connected in parallel summing the common mode noise off ALL coax lines onto the coax selected - this means you may be picking up common mode noise from coax lines that are not even connected to the coax antenna selected. The only practical solution is to isolate the coax braids from each other BEFORE they connect to the antenna switch as shown in the picture for a simple 2 position antenna switch.
This product listing is for use with your antenna switches which have 2 - 8 antennas. Each switched line needs a common mode noise filter prior to being connected to the switch. In some cases you can use a double male barrel connector to attach the filter to the switch or you may need a short jumper cable. (ANTENNA SWITCH SHOWN IN PICTURE NOT INCLUDED - SHOWN FOR ILLUSTRATION OF USE ONLY)
We offer a low power filter (CMNF-500-50 up to 500 watts PEP and up to 46 dB of common mode noise suppression per line) or a high power (Maxi-Choker, MC-1-3000 up to 3KW PEP and up to 60 dB of common mode noise suppression per line) and 2-8 ports of antenna switch. If you use a dummy load for one of the switched ports you do not need a filter for that port. Each filter has a range of 1.8 to 61 MHz (see individual listing on this website for specifics).
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Coax antenna switches generally only switch the center conductor of the coax and all the coax braids remain connected in parallel summing the common mode noise off ALL coax lines onto the coax selected - this means you may be picking up common mode noise from coax lines that are not even connected to the coax antenna selected. The only practical solution is to isolate the coax braids from each other BEFORE they connect to the antenna switch as shown in the picture for a simple 2 position antenna switch.
This product listing is for use with your antenna switches which have 2 - 8 antennas. Each switched line needs a common mode noise filter prior to being connected to the switch. In some cases you can use a double male barrel connector to attach the filter to the switch or you may need a short jumper cable. (ANTENNA SWITCH SHOWN IN PICTURE NOT INCLUDED - SHOWN FOR ILLUSTRATION OF USE ONLY)
We offer a low power filter (CMNF-500-50 up to 500 watts PEP and up to 46 dB of common mode noise suppression per line) or a high power (Maxi-Choker, MC-1-3000 up to 3KW PEP and up to 60 dB of common mode noise suppression per line) and 2-8 ports of antenna switch. If you use a dummy load for one of the switched ports you do not need a filter for that port. Each filter has a range of 1.8 to 61 MHz (see individual listing on this website for specifics).
