Can These Snap Around Ferrites Reduce Noise on HF Bands?

These are 9mm snap around ferrite clips meant for consumer electronics products to reduce radio frequency interference to them. Many user reviews show good results with their consumer electronics devices. In my case, I can snap these on to my HLF 200 cables which I use for my IC 2730 VHF/UHF dual band radio. But it is not possible to snap them over the RG213 cables which I use for my HF radio.