MFJ-864 Cross-Needle Meter reads forward and reflected power and SWR simultaneously at a single glance. It features separate HF and VHF/UHF directional couplers, each with its own SO-239 connectors.
This lets you connect your HF and VHF/UHF transceivers at the same time. You can then monitor SWR and power of either transceiver at the flick of switch. Others have a single set of connectors -- you have to plug and unplug to use separate HF or VHF rigs.
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