868 jammer - 4 Antennas 868MHz Jamming
Indeed, UV30 UHF VHF jammer is not the best option in your case. If you want to successfully block the full list of frequencies you need, you can avoid reprogramming any jammer by yourself. So I will answer all your questions in the same order you have asked them.
(1) Yes, you can buy a good jammer that lets you set the frequencies you want to block. Moreover, there are two such jammers for you to select from: the first one is the desktop multifrequency signal jammer that has powerful output and its output power is also adjustable. You can determine the frequencies you want to block by it before the actual purchase for our engineers to program those frequencies into the jammer and you will use it with the blocking ability of the frequency bands you need, even if it is not the full band.
The second jammer is the best cell phone jammer named MONSTRO - the portable version of multifrequency jammer but the frequencies it blocks are already programmed and cannot be changed. Still you can switch on and off 6 bands this jammer can block, totaling with 10 frequency types.
(2) There are no USB ports on the jammers but as long as multifrequency desktop jammer is adjustable you can buy it easily.
(3) As I have already said, we can make pre-tuning of the multifrequency jammer and it will jam all frequencies you need. The only exception are so called "mind control frequencies". We are not making such electronic warfare devices because it is absolutely illegal and is considered as the weapon manufacturing, so only the military facilities can produce such devices which work with those frequencies.
In order to protect your brain from those ELF waves you need to use protective helmet or something like that, and I guess it must work using the principles of Faraday cage yet not for electric charges but for low frequency ELF waves, blocking them from entering into your head.