Nate Duehr wrote: > Steve S. Bosshard (NU5D) wrote: >> Your local NOAA Weather station is a good test transmitter for frequency >> and peak deviation.. Steve NU5D > > I noticed recently that on an outside antenna my IFR 1500 was very > confused by the two local NOAA frequencies, since they're close to each > other and I receive each equally well. > > Receiver in the IFR was too wide, I assume -- but attenuation didn't > really help. > > I think the two locals are 162.46 and 162.55 . I live in-between them. > > The lower of the two was fairly "clean" but the upper looked odd, > sounded odd... and attempts at looking at deviation would have been > foiled badly by the distortion. Something wasn't right. > > I'm not sure if that's the behavior I should expect from the IFR or not, > but it's what I saw... > > Nate WY0X
On every service monitor I've seen-if the signal isn't pretty strong (~25-30dB of quieting), it won't get a good 'lock' on it and won't read freq correctly. And it REALLY won't read deviation-it will add any noise on the received signal to the deviation. -- Jim Barbour WD8CHL
