Cheap usb sound card and vox Andy, Big problem's with audio bandwith , using the many audio interfaces, especial at vhf, with the high speed Modes, many of the vara installations are bandwith limited,

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VARA Deployment PTT The VARA modem offers a choice of CAT control for TX/RX and switched by the external application. The default is:- Switched by external application BPQ, RMS Express and Tri-mode ha

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