![]() ![]() While I don’t completely understand how this choke works, I really wish I had discovered it much earlier. There was no attenuation of signals that I could detect. Wow! Now the noise was lowered an additional 1 to 2.5 S-units on these three bands. coax where it enters my house and the other at the rig’s end. In an instant I could use 160-40M again! So, I decided to get another CMC-130-3K to run in series with the first, one at the end of the 100 ft. Suddenly, most signals were no longer covered up by the noise. ![]() To my amazement it lowered my noise by 4-5 S-units on 40, 3-4 S-units on 80 and 2-3 S-units on 160. Soon afterward, I saw an ad for the MyAntenna Common Mode Choke CMC-130-3K and decided to give it a try. I next tried a Brand X 160-10M Line Isolator and that did nothing. The utility companies came several times to try to identify the noise source(s) but never with any success. The signal to noise ratio on these three bands was horrible. On 40, the noise was often S-6-7 making only the strongest stations being readable. It got to the point that this “white noise” reached as much as S-8 on 80M and S9+5 on 160, rendering those bands basically useless 24/7. I had been plagued by significant RFI noise coming from somewhere in my neighborhood. Review for the MyAntenna CMC-130-3K September 2016 *ICAS = I ntermittent C ommercial and A mateur S ervice The Enclosure is UV stable and could be used outside.PTFE (Teflon®) insulated coaxial cable used can handle a lot more than legal power (1500W) in the USA.SO-239 PTFE (Teflon®) Connectors which produce no impedance bump but the continuity of coaxial cable where the choke is inserted, helps minimize leakage of RF in multi/contest stations setups.See the video of CMC’s in action at AC0HF station Only chokes with Resistive (Rs>Xs) CMI- Common Mode Impedance stops and dissipate unwanted RF or noise coming to your equipment for sure. This parameter, Rs>Xs ensures that our CMC will NOT increase common mode currents as could with inferior coaxial cable chokes. Most important, the value of CMC-130-3K Common Mode Choking Impedance and its Resistive (Rs) part is always higher than the Reactive part (Xs) over the working bandwidth. Unlike other companies, we do not claim unrealistic impedance values or frequency coverage. Our CMC-130K has huge Resistive values of Common Mode Choking Impedance from 1.8-30MHz, click the chart on the side for actual measurement data. We do not claim “one size fits all” but actually, we design, measure, and make such products. If you have unbalanced antennas such as OCF dipole or your antennas close to your home, adding one CMC130-3K will greatly reduce RF Interference problems on your equipment and 120/220V wiring inside your home. It is a cure for noisy locations, reduce the noise floor of your receiver by several S-units instantly. NOTE! PL-259-PL259 adapter is NOT included. Use it as BALUN for G5RV/ZS6BKW, Dipoles, etc. Common-mode attenuation is up to ~41dB max.It is the only product with over 10,000 Ohms of CMI (Common Mode Impedance) on 3.8-30MHz while maintaining a Resistive part of CMI for more than 25MHz of the frequency spectrum. This is the one and only Common Mode Filter Choke for 1-30 MHz on the market. We have a partnership with ON7FU Ferrite Applications in Belgium since 2017.Description CMC-130-3K Common Mode Filter Choke / Noise Suppressor / RF Isolator Photo background : Inside of JC-5s tuner 4Kwatt PEP Stockcorner is a brand name of Ionize-Solutions B.V. On all our products we provide 12 months warranty on factory faults. If you order from the webshop: Just add your item in the basket, we will calculate the total order value for you. If you wish to cancel your order, you can do this at any time. ![]() The price depends on the weight, country and insurance. Transportation are at the normal rates used by TPG post (Dutch transporter PostNL) The external outside antenna tuners are the most efficient when you are in need to optimise your antenna to your radio if the S.W.R. We have stock and are ready to transport JC-4s tuners. We did arrange a complete new redesign of the control box. We selected a new company in The Netherlands who is producing our prints. We have high quality products like automatic antenna tuners and baluns.Īpril 2023 : Due to the Corona disaster in the world we are after a long time back into production. Our goal is to provide solutions which are not on the market, better quality or much cheaper. On our website you can find quality items for Ham Radio Operators. ![]()
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