Weak is not a word i would use in the context of any virus. Royal rife put forth the idea that the biggest problem with viri is their polymorphic nature. People balked. On this side of the century the polymorphic nature of viruses is considered ground breaking.
The frequencies i use are preset. Id have to go through my books to give exact answers on that. All is run on square wave.
When I said a weak virus, its life span outside of the human body is very short, only a few hours....Plus its not airborne.
Some of the earlier Rife machines kits being sold contained an amplifier, because when Rife was treating people back in the 1930s he also knew that the audio frequencies he discovered needed to be amplified, and it was that "power" including the accurate frequencies, which killed off the viruses and bacteria....An analogy is the "power" an opera singer uses to smash a small glass when she reaches a certain musical note...Another analogy is when you raise the volume of your Hi-Fi system and certain bass frequencies from the music cause the windows in your room to rattle a lot....If you turned the volume up very high, you would eventually smash those windows..
Only a few years ago it emerged from a UK Daily Mail newspaper, that the Americans were treating men with prostate cancer, by what was termed as "radio waves" (a misplaced term), I did make a posting on here somewhere about this but obviously I will go through it again...
The treatment was for 10 men in a room, there was a radio transmitter operating in the non burning 27Mhz wave band putting out only 4 watts of Radio Frequency (RF) energy, identical to a CB radio RF output and frequency range....The modulation (Audio Content) of the transmitter was the resonant frequency of prostate cancer that was being heavily amplified....The newspaper article did not say how many treatment sessions were needed, but it did say that the treatment was 100% effective....I must apologise to you for putting you in an awkward situation when I asked you for the resonant frequency of the Covid-19 virus, as it wasn't even known before all this started off..