Re: blanking police radio

["Tesla list" <tesla@xxxxxxxxxx>]

Original poster: <davep@xxxxxxxx>


> isnt it possible the report is correct??
    cetainly.

> cheap radios suffer serious bleedover from other radio sources!!
    PD gear is not cheap, is FM.

    The risk i would see is an inadvetent resonance off a
    coil/choke, even piece of wire on local PD freqs.
    Receive sensitivities are in the microvolt range: doesn't
    take but a small percentage of the '1.5MV' power levels,
    resonating, to achieve a few uVolts.

    (not coil, but to demonstrate the risks:
    At a computer Company Now Defunct, decades bac, one of
    the terminals happened to be in a doctors office, next the PD
    and a spur from an internal clock was JUST on the PD freq.
    Can Happen.)

> i'm not ham i was citizen band! surely police radio isn't very high
>quality more just summat that works!! crap!!
     NOT.  Period.  Good gear.

> so does anybody know the frequencys were talking about!!
     Typicall 30-50 MHz, 150-170 MHz, up to 400 odd UHF.
     Not a _coil_ harmonic, but possibly a spur as above.

     best
      dwp