It's so easy to plug-and-play the recent Nady's (the LT types, that is) and they're so reasonably priced, I just wouldn't bother with anything old off e-bay a'tall. Seems a majority of the problems fellers post with the Nadys concern the older units.
Nothing wrong with saving a buck or two where it's reasonable, but I'd imagine pre-owned wireless mics would have seen a lot of action by anybody needing them professionally. They have crystals that can go out of tune, over time. That said, been using a Nady 151VR-LT in my homebuilt rig for a couple of years now, and it's still going strong. Last week my e-squawler tumbled about 8 feet down a sandstone ledge in the middle of a call, didn't skip a note. (Umm...anybody wanna buy a slightly used Nady 151 VR-LT?)
Biggest issue, as I see it, about the older units: depending on the age of it, an older Nady unit may not have the full frequency response of the later 151VR-LT or 351VR-LT sets. I've seen some early literature that showed only a 12KHz uppper frequency limit, whereas anything recent from Nady goes to 20KHz (I believe this to be a limitation due not of the included microphone, but of the transmitter/receiver set.Even the cheapest electret microphones like the ones that come bundled with computers nowadays go to 20KHz).
Another point in favor of buying new from a dealer is it might also net you a return policy if you find radio frequency interference problems a particular channel in your region.
LionHo
