315MHz 433MHz Band Jammer

Is there some nice jammer design for 315MHz and 433MHz bands ?

About 100m coverage.

Design suggestions ?

is there a specific purpose to this or are just wanting to upset a lot of legal users of those frequencies ?

Dave

PS ... pleased I dont live near you ;)

no its just for experimental purposes, for adjusting or redesign my 433MHz modules to be resistant on this things. (how much is possible).

Connect a "signal generator" to an antenna, set it to that frequency, apply FM modulation of around 100 KHz deviation. You should be able to buy one off of ebay for around S400.

Causing intentional interference is illegal in civilized countries. You must be a really bad guy! Be aware that there are legal institutions armed with good equipment to find you with your jammers. A typical punishment is a couple of years in jail, and loss of equipment.

Yes I know that and interference is everywhere even when You start washing machine (and that device You buy legaly in market).
Today there is no civilized countries in World (civilized only in minds). Civilized is on big question.

No I'm good guy fighting against bad guys. I'm trying to see what happens with my RX TX link when jammers is active, and make some tuning or redesign if possibility exist. Policeman is not bad because he have gun, important is when he and why use that gun. Danger things are everywhere, even with RF standards and regulations interference is everywhere, just call Your mobile phone near speakers. You canot make good security device if You dont know what thief use and how.

In my country they can not find even switch to turn light on. On markets there are many "strange freq - not legal RF range in my country" cordless telephones. I looking for jammer for about 100m not military black spot ranged 5km. Its difficult to find and locate that lower power device expecialy if detection device not in range with jammers, and jammer are portable in small box like cigarete.

In civilized countries probably is democracy. You loss equipment and pay some money for penalty, say sorry three times and go on.