Week 5 Continue making Signal jammier

Before we start making the signal jammier we need to find out what frequency cellphones are operating. so according to that frequency we can adjust our device to the same frequency cellphone are using. Below are the standard frequency's cellphones are using.

• AMPS - 800MHz
• PCS - 800MHz, 1800MHz, 1900MHz
• GSM - 850MHz and 1900MHz in America , 900MHz and 1800MHz in Europe and Asia
• GPS - 1227MHz in military and 1575MHZ in civil
• Wi-Fi/Bluetooth - 2400MHz to 2500MHz
• RFID (UHF/VHF) - 14MHz-1400MHz, 800MHz-2450MHz 

According to the frequency we are blocking we need to choose which frequency we are going to jam. Most text walkers are using GSM when they are distracted from phones. So blocking only that frequency would be enough. 

And another important part is FR amplification unit in our jammier. Because it decide what is the area we covered from the jammier. we need to consider more on this Because we don't need to disturb other people around that area. 

Fig 1: FR amplification Unit (White, 2011)

  

That's all for the week. And we are planing on check the prices for these electronics we need to make the signal jammier coming week. 

Catch you all next week,

Derick