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🔊 Cut the noise, keep the signal — your interference’s worst nightmare!
The RM Italy Low Pass Filter 27/586 is a high-performance RF filter designed for 3-30 MHz frequency range, capable of handling up to 500 watts PEP. It delivers over 50 dB attenuation above 54 MHz, effectively blocking unwanted TVI and BCI interference. With a low insertion loss of 0.5 dB and compatibility across AM, FM, SSB, and CW modes, this compact 9-ounce filter ensures crystal-clear signal transmission and robust protection in demanding radio environments.
| ASIN | B0075S8L0Q |
| Best Sellers Rank | #1,951 in Audio & Video Antennas |
| Customer Reviews | 4.4 4.4 out of 5 stars (79) |
| Date First Available | February 5, 2012 |
| Department | Radio |
| Is Discontinued By Manufacturer | No |
| Item Weight | 9 ounces |
| Item model number | rm_27586 |
| Manufacturer | RM Italy |
| Product Dimensions | 3 x 4 x 4 inches |
W**R
Small and works well
Stopped bleed over in the surround sound when on 20 meters. Improved antenna characteristics on off center fed dipole in the bands it’s designed for. Recommend for cmc fix.
A**B
Works great, great Price!
I use this in conjunction with a DF3000 low pass filter. I live in close proximity to an Air Medic port, Fire Station, and Police Station and run an IMAX 2000 which is known to cause RFI issues. I have tried running this filter at different points in the coax in in different series to the other filter and have seen nothing but flat SWR. Im even seeing a slightly lower SWR at the radio with both filters connected in series. This filter has greater attenuation above 30 MHz but the DF3000 has two curves giving it more of a band pass effect. Together they work great. I have a TV antenna about 20 feet away from the IMAX and with no filters I get a bit of interference but with filters connected, I get nothing. Well worth it!.
K**S
Helps Stop Vehicle Interference
Works great and stopped my CB radio and amplifier from interfering with my ABS and Stabilitrak system in my truck.
W**C
Compact and Effective
I use this on my CB Base radio and it is quite effective. Nice build quality (inside and out). The small size is a plus. (Note: Because of the internal design, both SO-239 connectors are on one side. I had to use a right-angle adapter to connect this to my radio and have space for the coax to my antenna.)
D**E
I've had low pass filters that did not work real well in the past;
But this one seems to work quite well. Intended to pair with small RMItaly amplifiers that DO NOT have built in bandpass filtration, I.E. no band switch, just, you know, on-off, ssb/am, preamp on/off yes those model amplifiers. I would not run one of those without one of these. Enjoy.
C**I
Tvi filter
My HD antenna 25 ft away from the sirio 827 antenna. Everytime I keyed my mic, it would cause TV interfaces. This solved the problem, now my wife is happy. I didn't really want to move either antenna. The cable management is a lot of work.
J**M
Not great for my use
Raised SWR making it unusable
J**L
Easy to hook up
I installed this for peace of mind that I was not interfering with nearby electronics. I did not notice any loss in watt output which probably means that my radio did not have much in the way of unwanted harmonics. If you do notice a drop in watts, it probably means your radio needs aligned.
Trustpilot
1 month ago
1 month ago