If you’ve noticed the TRX-DUO software-defined radio transceiver ... Sure, you can pick up an RTL-SDR dongle for a fraction of the price, but then you miss out on transmitting.

For sure, adding all of that extra technology will make the DUO, which is currently the size of two Chapstick cases, less elegant (the Vonage adapter is the size of a thick sandwich). And it will ...