Siretta snyper 3g signal strength testers siretta snyper 3g the snyper 3g is a high performance cellular signal and network analyser for the 3gumts and 2ggprs networks with a host of important features for the busy engineer and installer the new snyper range utilises the same design platform used in advanced wireless terminals to provide market leading performance and functionality at a highly competitive price siretta snyper 3g handheld signal strength tester for 3gumts networks