Overview JUMA TX500 is a digitally controlled CW transmitter for the 500 kHz amateur radio band (600 m). The transmitter is available as a component kit which inludes all the electrical and mechanical componets. JUMA TX500 is using ultra high efficiency CMCD amplifier (Current Mode Class D) topology in the final RF amplifier. The final…
DetailsADS-B / UAT / AIS / Marine band / Air bands (VHF and UHF) Capable / Multi-Device – Multi-Band – Multi Channel Software Defined Radio Receiver / Decoder. A unique and revolutionary product, built on the heritage of the SBS-1 range of receivers. The SBS3 is a true stand-alone SDR receiver, unlike the majority of…
DetailsLetter from the President, Steve Farkas, WA2NFR I’m spending about eighty percent of my time on Alpha’s new A4040 Autotuner. It’s great to get back to engineering – my true love. It’s picture time! This was shot as we were assembling the first article and things look really good. A few holes in the wrong…
DetailsAdvances in communications in recent years have come at a startling pace. In the old days, tocommunicate via radio one needed a good antenna, a selective receiver, and a powerful transmitter.While those items are still useful, today there is one more item required: good software. The “weaksignal propagation reporter” software or WSPR (pronounced “whisper”) is…
DetailsInterview with Eric WA6HHQ at the Orlando Hamvention by AD4Z(HI3A) and HI3EPR. Questions and answers about remote operation of the K3 using a K3/0 interfaced with Remote rig. JULIO (AD4Z – HI3A) K3/0 Remote Control Head for the K3-Remote / RemoteRig system The K3/0 appears identical to the K3 in size and function and with…
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