Review on Jabinco 20pcs Clip-on Ferrite Ring Core Noise Suppressor Cable Clip Set for Various Diameter Cables - Black by Jeff Payne

So I bought these to try and fix a problem in the 122.975MHz band caused by a cheap lightbar I bought. I installed one and it did little to fix the problem, then I installed a few more and it almost seemed to increase the noise. I've since learned that certain ferrites work for certain frequencies. Now reading the questions about what this mix is, it becomes clear why people are asking this. The seller does not say what frequency they are intended for. So I found the information I needed from Palomar Engineers that I need mix 31 or mix 43 for that frequency. I hope this seller knows what the mix is so we don't have to return the items. I don't like buying things that I have to return.