Acknowledgement: Thanks to Barb WB2CBA for sharing this project to the radio ham community.

The USDX Picture with the black PCB'S is just for demonstration of the end product.

This listing is for a complete kit of the PCB'S 6 boards only.

uSDX SOTA is a modular design transceiver. It is made of 6 boards which are explained in some detail below.

Features :

USB CAT interface - ideal for digital modes !

USB Firmware Programming

Full SDR as per tri-band design

SDR I/Q pins for experimenting with SDR output

PTT OUT for driving an amplifier directly with an optocoupler solid state relay TX

SPK/MIC for handheld speaker/Microphone,

Headphone and MIC/PTT/Morse KEY inputs are all same features as in Triband design.

ATU makes the rig portable 8 bands to choose from

Here are basic building blocks of uSDX SOTA System:

Main Board: This main board is similar to previous TriBand design main board. Has all components on board except PA+LPF parts. It has full CAT compatibility with USB interface also supports usb programming.

Power Amplifier/Low Pass Filter (PA/LPF) Boards: Quadband THD version PA/LPF Module: (not Available in this listing) Octoband THD version PA/LPF Module: (Included in the kit)

Display Boards: The display board chosen for the uSDX SOTA rig is with the internal Automatic Antenna Tuner.(Twin OLED displays)

7X7 Automatic Antenna Tuner Unit (ATU) Module: Based on David Fainitski, N7DDC’s infamous 7X7 ATU100 Antenna Tuner which is redesigned to be miniature enough to fit in uSDX SOTA aluminum case and work in QRP conditions up to 10 watts tested.

What is Included ?

6 x PCB's - Instructions link in the description under the document option