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Re: blanking police radio
Original poster: <davep@xxxxxxxx>
> isnt it possible the report is correct??
> 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.
> 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.