That's an interesting project! I have a spectrum analyzer made by
http://www.dkdinst.com/ in an old laptop (Toshiba T3200) that uses a TV
tuner as the front end. It's really pretty clever and works well.

For this particular application, though, I think it will be hard to beat a
consumer grade scanning receiver. 35 years ago, I worked in a local radio
station. The news guy had a scanner and wanted a way to hear all the
police calls from overnight. I connected a relay to the squelch circuit
that would start a tape recorder whenever someone broke squelch. He could
then listen to all the police calls for the night when he got in in the
morning.

With the original poster's project, you could do "voice activated"
recording to the hard drive so no modification of the receiver would be
required. By the way, a while back I bought a "web power switch"
(http://www.digital-loggers.com/lpc.html) so I could remotely reboot a
crashed server. The company that sells this web power switch seems to
specialize in voice logging systems for police agencies. Interesting stuff
there, and not really too expensive.

Harold

> On 6/14/07, Kevin Fonda <kfonda@gmail.com> wrote:
>> Can anyone point me in the direction of a schematic for a single channel
>> radio receiver in the 154.000-155.00 frequency range?
>
> If you really have spare time and like soldering and programming, I
> think this one will be perfect for your hands and brain:
> http://hem.passagen.se/communication/uv916rec.html
>
> P.S. At least the sinusoidal synthesis works well. The rest I wasn't
> curious, I'm not a radioscamator
>
> Vasile
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