inputs.text: mine not make good contact replaced good silverplate - sark100 clone heavyduty steel case rather heavy batteries not shred documentation look needs 12volt wall wart not included battery compartment intended eight nimh cells 96volts nominal piece colorcoded zip cord no battery holder s0239 connector nickel cheap mine not make good contact replaced good silverplate unit mine read within ohm correct impedance spoton swr good 101 swr miniusb supposed pc software available not tried yet cannot powered charged usb supposed mod allow use hc06 bluetooth module android pad not attehempted bargain compared alternatives