I recently bought 2 gadgets for what is a cheap price in the ham world for what they do
The meter is specifically geared to 1-60Mhz, that puts it's center of measurement almost smack in the middle of the CB band. And for hams it's basically smack in the middle of the very top end of 10m BUT it happily goes up into 6m band and covers all of it.
A guy with mad skillz reviewed it on utube and cut it down until it was pointed out to him how his analysis was seriously flawed and the meter actually performed pretty damn well for a ~$75 gadget
My second score was mad cheap, $45 at Amazon. This antenna analyzer is a clone of a ham's workbench project and it exists in incredible variety, sizes, price, abilities.
My device can sweep from basically 0Mhz to 999Mhz. That's respectable and then some. There isn't any part of any ham band I'm ever going to use that my gadget won't cover. This thing will even calculate the length of a run of coax and well as the properties of either the coax, antenna, or both!!!
I discovered a chunk of name brand coax that was toast, it was nearly a dead short with no impedance. Running full power from my rig into that may have driven the final stage of my ham radio output into the danger zone. Older radios, (I have 1) didn't protect themselves from such scenarios. It was only when computer controls get added into ham radios did automatic power dial back protection become standard.
So between the meter and the analyzer I should never be wasting RF energy simply heating up wires because of poor impedance matching. Those days are gone. Now when I go QRP (reduced power intentionally) down to 5 watts I can be sure my antenna system is radiating all 5 of those watts. As a very rough example IF: your impedance is 2:1 (100 ohms) then 50 watts of the 100 watts you're sending to the antenna simply heats the wire. It's lost.
I'm splitting my post into two to avoid extreme clutter in either.