--- product_id: 492561411 title: "Malahit tr usdx transceiver 5-Band usdx Multimode QRP Assembled with case by PE1NNZ and DL2MAN" brand: "malahit" price: "¥40891" currency: JPY in_stock: true category: "Malahit" url: https://www.desertcart.jp/products/492561411-malahit-tr-usdx-transceiver-5-band-usdx-multimode-qrp-assembled store_origin: JP region: Japan --- # 5 Bands (80/60/40/30/20m) 5W @ 13.8V, 0.5W USB power OLED Display + USB CAT interface Malahit tr usdx transceiver 5-Band usdx Multimode QRP Assembled with case by PE1NNZ and DL2MAN **Brand:** malahit **Price:** ¥40891 **Availability:** ✅ In Stock ## Summary > 📡 Stay connected, stay ahead — the ultimate QRP transceiver for the savvy millennial operator! ## Quick Answers - **What is this?** Malahit tr usdx transceiver 5-Band usdx Multimode QRP Assembled with case by PE1NNZ and DL2MAN by malahit - **How much does it cost?** ¥40891 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/492561411-malahit-tr-usdx-transceiver-5-band-usdx-multimode-qrp-assembled) ## Best For - malahit enthusiasts ## Why This Product - Trusted malahit brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Multimode Mastery:** Supports CW, LSB, USB, AM, and FM modes for versatile communication across 5 HF bands. - • **Pocket-sized Powerhouse:** Compact 90x60x30mm design fits your on-the-go lifestyle without compromise. - • **Smart Tuning & Monitoring:** Built-in SWR bridge and voltage/current sensors ensure optimal antenna tuning and safe operation. - • **Future-proof Frequency Expansion:** Currently covers 80-20m bands with planned support for 17/15/12/10m, keeping you ahead of the curve. - • **Plug & Play with Firmware Flexibility:** Pre-assembled with bootloader and firmware; customize your call sign and upgrade easily via USB. ## Overview The Malahit (tr)uSDX is a cutting-edge 5-band multimode QRP transceiver, pre-assembled in a sleek 3D-printed orange case. It delivers up to 5W output with efficient Class E PA, supports CW/LSB/USB/AM/FM modes, and features an OLED display, onboard mic, speaker, and USB CAT interface. Designed for portability and customization, it includes built-in SWR and voltage/current monitoring, with firmware upgradeability and future band expansions planned. ## Description 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. ## Features - LO Bands:80/60/40/30/20m，Mainboard：1.2 version,RF Board：1.0 version - Assembled With Case:Out of box,Assembled with 3D printed case (orange),raised lettering. - Already Bootloader:Mainboard have been finished the Bootloader and programed the firmware.The serial number has been attached to the bag inside the box. - 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. - Power Jack:3.5mm x 1.35mm. - Firmware Version:1.Official version:programming: No spectrum display.2.Beta version programming: Spectrum display, but the main menu will have slightly fewer other functions than the official version. - No serial Number on the OLED:We have finished the Bootloader, so the serial number will not be displayed on the OLED. - How to find the serial number: The plastic bag in the package has a serial number label.If lose the serial number sticker, you can enter the 18 digit "0" during programming to find the original serial number. （000000000000000000 if unknown) ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0BJ247SNL | | AntennaDescription | Radio | | Best Sellers Rank | #431 in Portable FRS Two-Way Radios | | Brand | Malahit | | Color | Orange | | Customer Reviews | 4.4 4.4 out of 5 stars (196) | | Impedance | 50 Ohms | | Item Weight | 230 Grams | | Manufacturer | Malahit Tech | | Maximum Range | 1000 Meters | | Mfr Part Number | UK-RDMJH7102510BDAAEC | | Number of Channels | 2 | | Number of Items | 5 | | Unit Count | 1.0 Count | | Warranty Description | 1 years warranty | ## Product Details - **Antenna:** Radio - **Brand:** Malahit - **Color:** Orange - **Impedance:** 50 Ohms - **Manufacturer:** Malahit Tech - **Maximum Range:** 1000 Meters - **Number of Channels:** 2 - **Number of Items:** 5 - **Number of Packs:** 1 - **Unit Count:** 1.0 Count ## Images ![Malahit tr usdx transceiver 5-Band usdx Multimode QRP Assembled with case by PE1NNZ and DL2MAN - Image 1](https://m.media-amazon.com/images/I/81Sb+lT0hZL.jpg) ![Malahit tr usdx transceiver 5-Band usdx Multimode QRP Assembled with case by PE1NNZ and DL2MAN - Image 2](https://m.media-amazon.com/images/I/81TT76y0b8L.jpg) ![Malahit tr usdx transceiver 5-Band usdx Multimode QRP Assembled with case by PE1NNZ and DL2MAN - Image 3](https://m.media-amazon.com/images/I/71TwjEtfAiL.jpg) ![Malahit tr usdx transceiver 5-Band usdx Multimode QRP Assembled with case by PE1NNZ and DL2MAN - Image 4](https://m.media-amazon.com/images/I/61xIlgLduRL.jpg) ![Malahit tr usdx transceiver 5-Band usdx Multimode QRP Assembled with case by PE1NNZ and DL2MAN - Image 5](https://m.media-amazon.com/images/I/61eHeww0nML.jpg) ## Questions & Answers **Q: Can I use a 14.4 volt 5A power supply?** A: Yes, up to 16 volts. Less than one ampere, key down on CW. **Q: What is max DC voltage this can take? I just bought this on Amazon. I already have a 14.4 volt AC/DC power supply for my X6100. Will it work?** A: I have read it will work up to 16 volts. Works at 14.7volts, making 5 watts. **Q: What is included with this transceiver? What comes in the box when it’s delivered?** A: Assembled one with 3D printed case (orange)，Plug and play. Include: one unit of assembled rig and one unit DC. **Q: Can you use a 3s battery with this?** A: 3S li ion battery pack can be used with this Qrp rig. There are two ways of powering. The first is a usb connection for 5 volts and I believe 1/2 watt out. The second is to use a tubular dc power connector which is supplied with the unit. If you use 12 volts the specs say you will get somewhere near 5watts but I’ve heard rumors in some units it’s a little less wattage. The 3d printed battery boxes that slide on the back of the radio are for 3 18650,s nominal 3.7 v to 4.2 volts max each in series for 11.1 to 12.6 volts. I personally bought a 3S power brick rather then a 3S shrink wrapped type brick. ## Frequently Bought Together - tr usdx transceiver 5-Band usdx Multimode QRP Assembled with case by PE1NNZ and DL2MAN - tr uSDX Transceiver usdx Battery Case Kits by DL2MAN - Digirig Mobile Cable uSDX, (tr) uSDX radios --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.jp/products/492561411-malahit-tr-usdx-transceiver-5-band-usdx-multimode-qrp-assembled](https://www.desertcart.jp/products/492561411-malahit-tr-usdx-transceiver-5-band-usdx-multimode-qrp-assembled) --- *Product available on Desertcart Japan* *Store origin: JP* *Last updated: 2026-07-21*