Landis+Gyr Integrated WanGate Radio (IWR)

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  Metricom Utilinet IWR Series II
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  Radio fully disassembled
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  Internal view of case, notice surge suppressors bolted to the left side of the case.
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  EEPROM for code storage and jumpers, JP2 used to enter test mode.
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  Radio transmitter/receiver board. Separate components used to build up RF circuit, replaced by single transceiver IC's in newer devices.

Series 4 Radio

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  Cellnet Technology Gridstream Series 4
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  Smaller antenna connector than Series II radio, power connector moved to the other end of the case.
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  Much smaller than Series II radio, more powerful processor and radio now uses single transceiver IC with increased transmission power.
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  They still stick with a single sided PCB for component placement, same as Series II radio.