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tr usdx transceiver 5-Band usdx Multimode QRP Assembled with case by PE1NNZ and DL2MAN

4.0 out of 5 stars 15 ratings

$148.00
FREE Returns
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Purchase options and add-ons

Antenna Radio
Brand Malahit
Color Orange
Impedance 50 Ohm
Maximum Range 1000 Meters
Item Dimensions LxWxH 4 x 2 x 2 inches

About this item

  • 【Lo Bands】80/60/40/30/20m
  • 【Assembled With Case 】Out of box,Assembled with 3D printed case (orange),raised lettering.
  • 【Already Bootloader】Mainboard have been burned the Bootloader and programed the firmware.
  • 【Call Sign】 If you want to program your call sign, you need to read and fully understand the instructions which is in the package.
  • 【Excluding Battery Case】If you want, you can see the Battery Case on another page.

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Item Dimensions 4 x 2 x 2 inches 6.69 x 4.72 x 3.15 inches 2 x 1 x 1 inches 11.6 x 4.5 x 8 inches 4.49 x 2.24 x 1.3 inches
Power Source Solar DC Battery Powered

Product Description

Overview:

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)

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Product information

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tr usdx transceiver 5-Band usdx Multimode QRP Assembled with case by PE1NNZ and DL2MAN


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Customer reviews

4.0 out of 5 stars
4 out of 5
15 global ratings

Top reviews from the United States

Reviewed in the United States 🇺🇸 on December 2, 2022
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4.0 out of 5 stars the real deal, but not special vs the usdx+
Reviewed in the United States 🇺🇸 on December 2, 2022
this is the real deal, a tiny 5-bander supporting usb, lsb, and cw... (forget about transmit using am or fm, not gonna be useful)

however, i was pleased to discover that more than adequate reception of local AM BCB was possible using lower sideband (LSB)

these units are shipped supporting 80-60-40-30-20m bands... you cannot change the band range via the menu, although the firmware allows you to do so; there are two other boards in kit form that offer different bands and different ranges of bands

after determining the rig worked out of the box, i recorded the serial number, then went to dl2man's web site and downloaded a 'custom' firmware... the only custom thing about the firmware will be that you can have the rig display your callsign... the rig, out of the box, displays no callsign... next, i launched averdudess under winblows10... here's where you may get frustrated: you *must* use a data-capable micro usb cable, or your pc won't assign a COM port... i had to search through the junkbox after trying three different cables (an old usb hard drive cable worked)... plugged in the cable, loaded my new firmware, and reflashed the rig... worked FB

an important task after reflashing is to zero beat the 'ref freq' menu setting to make sure the rig transmits and receives on the displayed frequency; you can change the ref freq setting up or down to get on frequency; i used my 705 to record transmissions to fine-tune the frequency and voice modulation in sideband - the result was an important difference between the tr(usdx) and the usdx+ clones: the tr(usdx) has very acceptable voice modulation in usb/lsb!

both rigs are great for CW and as CW training transceivers

the firmware is rev 2.00i, although dl2man offers a beta as well.. quite frankly, as an owner of a usdx+, the tr(usdx) firmware offers fewer features (but does have one custom keyer message and CAT, which i did not test)... the open-source usdx+ firmwares on the FB group have many more options (such as IQ streaming, multiple CW messages), while dl2man, who got chafed at offshore cloners, has closed his source (dumb idea in my opinion)

while the usdx+ offers a wider choice of open-source firmwares and 8 bands vs the 5 bands of the tr(usdx), along with the option for internal 3s 18650 cell battery, the tr(usdx) does have some unique features: light weight, tiny form factor, ptt/straight key button (along w/a 'tune mode'), usb reflashing (although you can do an ISP port reflash), operation at QRPp (milliwatt) levels via usb power...

an sma is used instead of BNC, but an adapter and power pigtail is included

the 3D printed case is nice and sturdy

the OLED is unreadable in sunlight, unlike the usdx+, which offers backlighting on/off

the tr(usdx) also has SWR and voltage readouts! in straight key and CW mode, press the ptt button and you will see swr and voltage, depending on your menu's meter selection

there are probably a vast number of differences, but the fact is that documentation is poor for both rigs (for example, try finding a description or example of using the built-in line editor to edit the CW message)... no manual is included, so you will have to read dl2man's docs, and watch his videos to learn more

i am happy with the rig, but understand this about it and other variants: due to the memory size of the atmega328p, there is no room for expansion.. these rigs are experimental... they are great CW rigs with decoding and messaging, and can be used for voice...

but they are dead-end in the development cycle... get yours if you wish, but they will never approach the features and performance of commercial qrp rigs... but it is great to have a little rig in the pocket for fun, and you will make contacts
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Reviewed in the United States 🇺🇸 on January 9, 2023
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