Overview:

The mainboard is version 1.2 and the RF board is version 1.0. 

In this version change, only the mainboard has been changed to 1.2, while the others remain unchanged.

1.(tr)uSDX is the successor of the uSDX Project. It´s the Result of the Collaboration between PE1NNZ and DL2MAN. The design was intended as an easy to build (pre-assembled) Kit.

2.The (tr)uSDX is a 5-Band / Mulitmode QRP Transceiver in Pocket Format (90x60x30mm - 140g). It features a highly efficient Class E PA and Supports CW/LSB/USB and AM/FM. Right now it covers 80 /60/40/30/20m and in Future there will be support for 17/15/12/10m as well.

3.It is supplied with an OLED Display, onboard Mic, (tiny) onboard speaker and for improvised QSO onboard PTT Key can be used as emergency CW Key.

4.Further on, the (tr)uSDX has a (Micro)USB CAT and Programming Interface, and while it produces typically 5W @ 13,8V Power Supply, it can create 0,5W Output from 5V USB Supply alone.

5.It is supplied with OnBoard SWR Bridge and Voltage/Current measurement Hardware, to help in tuning and operation.

Thanks to DL2MAN and PE2NNZ Contribution. We are approved by original designer.

Features:

1.Lo Bands:20m/30m/40m/60m/80m,Out of box,Assembled with 3D printed case (orange),raised lettering.

2.Aboat Bootloader：Mainboard have been finished the Bootloader and programed the firmware,If you want your call sign to appear on your OLED, then you need to program the call sign by yourself.

3.How to program the call sign? Required equipment:

1)tr usdx(serial number is on the bag)

2)computer (download AVR-Dudess software on computer)

3)usb cable.(Please refer to the instructions in the package for details)

Note:

If you want to reprogram/upgrade the firmware (or program your call sign to the firmware), you need to follow these steps :

①Download the firmware（DL2MAN's page）

②Enter the serial number (the serial number is in the package) and download the firmware.

③ Install the USB Driver for the CH340 driver and AVR-Dudess software (if the computer prompts that the AVR-Dudess cannot be installed), please use another computer to install it.

④Restart the computer and use USB cable to connect the mainboard (the computer will make a ding-dong sound at this time, indicating that the CH340 driver software has been installed successfully. If not, it may be that the USB cable has no data transmission function, try to use another USB data cable).

⑤ Open the AVR-Dudess software, and then program the firmware. Please follow the position circled in the picture below, set up the software, and then program.Opening Device Manager under Windows will show the assigned COM-Port(first image below)

How to use the RESET function?

Step 1: Hold down the encoder (do not release your hand), then turn on the power.

Step 2: After displaying the "restart" message on the OLED, release your hand.

The above steps will complete the reset.