Palomar Engineers CMNF-1500LF

CMNF-1500LF for transmitter/receiver coax lines up to 1500 watts PEP - 200 KHz - 7 MHz, Up to -38 dB Common Mode Noise Suppression!

For coax feed lines with receive and transmit signals, you will love the small size, wide frequency range and excellent attenuation of common mode noise interference

• Reduces broadband common mode receiver noise* picked up on the outside of the antenna coax feed line.
• Wide frequency range works on all brands of radios and coax fed antennas from 200 KHz to 7 MHz
• Common mode noise rejection up to 20-36 DB (3-6 "S" units) depending on frequency
• Simple plug & play installation: plug a short jumper from the CMNF-1500LF to your amplifier output and plug the feed line (or a jumper to your antenna tuner) into the other SO-239 CMNF-1500LF input. Either connector can be input or output. Rated at 1500 watts PEP.
• will work with Bias-T antenna switches and will pass DC voltage from input to output with no attenuation
• * not effective for noise from AC power lines or noise received directly by antenna
  

Installation Note: For best results, and to reduce co-interference between choked and unchoked coax feed lines with multiple antennas, ALL antenna feed lines entering the radio room need to have a separate feed line choke particularly if they are at a different frequency then HF, like VHF or UHF.

If you use a antenna switch for multiple antennas in the .2-7 MHz range, place the CMNF-1500LF in the "common" line of the antenna coax switch and the antenna tuner/amplifier.