Ken Arck wrote: > At 04:29 PM 9/18/2007, you wrote: > >> Your local NOAA Weather station is a good test transmitter for frequency >> and peak deviation.. Steve NU5D > > <---I disagree. I have seen MANY NOAA WX transmitters off-freq - some > well outside tolerance. Usually however, (while their audio quality > is overdriven, distorted and generally pure crapola), their deviation > *is* within limits. > > Ken
Agreed. Look at 900 Mhz paging (NOT VHF/UHF). Most of it is GPS sync'd, so it's more 'on-freq' then even the ultra-high stability service monitors. And deviation is usually pretty accurate, too-swings of either +/-4.5 or 4.8 are the norm, depending on if it's in FLEX or POCSAG/Golay. -- Jim Barbour WD8CHL
