200 mW on 122/134 GHz by Michael DB6NT

DB6NT 122 134 GHzamateurradio hamradio power amplifier Endstufe

Most of the millimeter wave mixers used in the amateur radio sector are subharmonic mixers thatare also used for transmission. The transmission power generated in this way is usually around 0.2mW SSB or even less. Power amplifier chips for these frequencies are offered by Teledyne. Thesechips achieve a power of over 200 mW at 23 dB gain (TSC 115-145G-5S4C). However,…

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24 GHz AirScatter between IK2OFO and DK3SE

24 GHz QOS Airscatter between IK2OFO and DK3SE

On 16th October made Roberto IK2OFO and Salvatore DK3SE an Airscatter CW QSO on 24 GHz. The distance between these two stations is 313 km! On IK2OFO web you can read a article about these very interesting QSO: Two New one: QSO AirScatter in CW a  24 GHz, QSO I-DL 24 GHz!! Used equipment: DK3SE Radio: IC 706 MKII + PANADAPTER…

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60th anniversary of first OK QSO on 10GHz

OK2KKW first OK amateur radio 10GHz QSO

From OK2KKW webpage, a nice story about first OK QSO on 10 GHz: Another piece, representing the level of our technology, they had with them at Klínovec OK1KAD – the first device for 10 GHz, equipped with a klystron and a superheat receiver. Unfortunately, due to an unfavorable coincidence, the connection failed to a greater distance. One of the facilities…

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M17 Project – new digital radio protocol

M17 new digital radio protocol hamradio amateurradio

Before few months, Wojciech SP5WWP informed us about M17 project. M17 is a new digital radio protocol in development as an alternative to those currently available, with freedom in mind. “The goal here should be to kick the proprietary protocols off the airwaves, replace DMR, Fusion, D-Star, etc. To do that, it’s not just good enough to be open, it…

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