But surely this device is just a cheap 'n' chearful type of spectrum
analyser, isn't it? How can they ban the sale of SAs?
most likely.
the rumor(?) of the ban had do do with the fact that it's sort of a
surveillance device. if you lived in the woods, you wouldn't expect a
near field signal from say a cop car. since the cops are too lame to
observe radio silence... in the city, you would know what was normal and
a sudden near field emmision in the cop band would alert you.
i don't know if you can get one. goto the Optoelectronics website. i
forget what it was called. the description says it all. the BW is
enormous.
but i wouldn't use it as a lab tool for emmisions. it's not going to
tell you how many dB down your harmonics and spurs are. just filter your
bot controller real good and get a HAM to help check emmisions if you're
worried.
it does (did) log signal freqs received into memory and i think it had a
vibrate mode to alert you to a nearfield emmision.
mike
BTW. i got one of their $350, most excellent freq counters. it arrived
in a box emblazoned with "made in the USA" or "proudly made...". the
damn thing didn't work. impatient, i opened it and the solder on the
surface mounted hold switch looked suspect. a wiggle pulled the switch
off the board. immediate problem solved - they won't count on hold. poss
long term prob... bad QC.