At 07:53 AM 10/30/02 -0800, Steve Schear wrote: >At 03:35 PM 10/30/2002 +0100, Anonymous <[EMAIL PROTECTED]> wrote:
>> Speaking of jamming, I've thought for a long time that a >>portable jamming device would be very nice to have. > >Frequencies don't get jammed, specific communications channels between >specific devices may. The analysis would have to include the type of >signals involved and the distances, antenna orientations and gains between >particular devices. The short answer is next to impossible and not without >costs and resources of a government. On the other hand, a 800 Mhz public service band (ie, cop radio bands) jammer could be useful. Feed a VCO with a noise signal of the desired bandwidth. Feed into a few-watt PA. Use an IC or (since you don't care about a clean signal) build an RF amp out of discrete transistors. The antennae wire can go up the stick holding your protest sign. Beware the Elmer with too many antennae, or a rotating beam, he's looking for you. ---- John Allen Williams/Muhammad, US Army -A Jihad of One
