It is easier to convert to a lower frequency. It takes a little more effort to convert up, but it is done quite often. ----- Original Message ----- From: "Richard Prosser" To: "Microcontroller discussion list - Public." Sent: Thursday, June 14, 2007 10:36 PM Subject: Re: [PIC], [EE] Radio receiver circuit > Kevin, > > It's not too far from the 2m ham band (144-148MHz). You should be able > to find a schematic for that band pretty easily & retune it. > > A "simple" receiver at this frequency will really need to be crystal > controlled if unattended and this means getting crystals of the > correct frequency or getting invoved in synthesisers or using a down > converter to a band where you already have a receiver. Note that the > modulation is likely to be narrow band FM so a standard (broadcast) FM > receiver is unlikely to be satisfactory. > > However, the easy way would be to buy a cheap scanner & set it to the > channel required. > You can do it, but the time required is likely to cost more than a > cheap scanner. > > RP > > On 15/06/07, Kevin Fonda 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? >> >> I'm a member of a volunteer Emergency Medical squad here in NJ and I >> would >> like to put together what would basically be a Tivo for our emergency >> radio >> system. I want to digitally record everything transmitted on our >> frequency >> (with a time stamp) to a hard drive. Any suggestions or pointers would be >> greatly appreciated. >> >> Kevin Fonda >> Manasquan First Aid Squad >> -- >> http://www.piclist.com PIC/SX FAQ & list archive >> View/change your membership options at >> http://mailman.mit.edu/mailman/listinfo/piclist >> > -- > http://www.piclist.com PIC/SX FAQ & list archive > View/change your membership options at > http://mailman.mit.edu/mailman/listinfo/piclist -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist