USDX Handheld Tri-Band Pocket Radio 15/20/40m 3 Band HF SSB QRP Transceiver Compatible with uSDX QCX-SSB. USDX is a portable QRP amateur radio shortwave transceiver with a miniature SDR architecture, referring to the portable SDR model that redefines the appearance of uSDX. It can be used as an introductory FT8/CW/SSB learner, where the SSB reception quality is good and the transmission quality is slightly worse. Receiving: 0.5MHz 30MHz (theoretically it can reach the limit of SI5351). Operating temperature range: 0? Power supply voltage: 10.5 16V DC, the negative pole is grounded. Body size: 502080mm (WHL) (excluding protrusions). Weight: about 200g (main unit only). RF output power: 0.1-5W (SSB/CW). 1 is ground, 2 and 3 are signals. Mic and key multiplexing port definition. In SSB mode, the function of this socket is microphone, 1 is ground, 2 is microphone (built-in microphone, here is external MIC), 3 is PTT control (panel integrated PTT control, button name is XMIT). In CW mode, it is the key interface. Please note that after switching back to SSB mode, the key can be used as PTT transmission control, and the MIC in the machine is invalid (the plug is inserted into the MIC in the machine and disconnected). Connection diagram with computer. The figure below shows the PTT control circuit. The antenna interface is SMA, please connect a 50 ohm resonant antenna. Above the OLED screen socket in the machine, there is a 4P pad, and the square hole is the ground, which is defined as GND/TX/RX/DTR in turn. Please use TTL cable connection to flash the machine, and pay attention to swap RX and TX. Bootloader rate is 115200. Under the fuselage, the plug size is 5.52.1, the inner core is positive, and the outer ring is negative. Do not plug it backwards, burn yourself out. International buyers please note: a. If the item is not as described or damaged in transportation, please send it back within 7 days upon date of receipt. Items must be unused, in original packaging and include all parts, accessories and packaging. This item is in the category “Consumer Electronics\Radio Communication\Ham, Amateur Radio\Ham Radio Transceivers”. The seller is “csdf5963″ and is located in this country: CN. This item can be shipped worldwide.
- Type: Ham Radio Transceiver
- Brand: Unbranded