Changes

 <gallerymode="packed" heights="200">File:Metricom Utilinet IWR Series II - Case External.jpg|Metricom Utilinet IWR Series IIFile:Metricom Utilinet IWR Series II - All Parts.jpg|Radio fully disassembledFile:Metricom Utilinet IWR Series II - Case Internal.jpg|Internal view of case, notice surge suppressors bolted to the left side of the case.File:Metricom Utilinet IWR Series II - Processor Board.jpg|EEPROM for code storage and jumpers, JP2 used to enter test mode.File:Metricom Utilinet IWR Series II - RF Board.jpg|Radio transmitter/receiver board. Separate components used to build up RF circuit, replaced by single transceiver IC's in newer devices.</gallery>  ===Series 4 Radio===<gallery mode="packed" heights="200">File:LandisGyrWangateRadio1.JPG|Cellnet Technology Gridstream Series 4File:LandisGyrWangateRadio2.JPG|Smaller antenna connector than Series II radio, power connector moved to the other end of the case.File:LandisGyrWangateRadio3.JPG|Much smaller than Series II radio, more powerful processor and radio now uses single transceiver IC with increased transmission power.File:LandisGyrWangateRadio4.JPG|They still stick with a single sided PCB for component placement, same as Series II radio.