The “QDX” (QRP Labs Digital Xcvr): a feature-packed, high performance, four-band (80, 40, 30, 20m) 5W Digi-modes transceiver kit, including embedded SDR receiver, 24-bit 48 ksps USB sound card, CAT control, synthesized VFO with TCXO reference. QDX transmits a SINGLE SIGNAL, it is not an SSB modulator with associated unwanted sideband and residual carrier, or intermodulation due to amplifier…
simple “digital” monoband transceiver SDT21 The goal of this project was the development of a simple to build CW monoband transceiver based on the direct superheterodyne principle with crystal control a la “PIXIE” or “Rockmite”, but with much better technical data. To minimize the circuit effort, the concept should be as highly integrated as possible…
General description and the advantages of the OM4001A amplifier. (Also read : https://www.cqdx.ru/ham/qro-qrp/om4001a-hf-linear-amplifier/) The OM Power model OM4001A is an automatic power amplifier, designed for use on all short wave amateur bands from 1.8 to 29.7 MHz (including WARC bands) and all modes. It is equipped with a two pieces of ceramic tetrode FU728F. The…
ANNOUNCEMENT: FlexRadio and SkySat are pleased to announce the Tuner Genius XL. The Tuner Genius XL is designed to complement the FLEX-6000 series and the Power Genius XL, but integrates with all modern transceivers. The Tuner Genius XL will be available in both SO2R and 1×3 versions. The Tuner is currently in beta testing and…
On August 31, 2019, Icom Co., Ltd. announced the IC-PW2 – 1kW linear amplifier in the HF + 50MHz band at its booth at Ham Fair 2019. Full power, full duty specification that uses LDMOS for the final output and 1kW output even for long-term transmission, equipped with an antenna selector that can connect two…