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14 April 2015
HAM-Radio 2015 by Frequencymanager

Visit us on HAM-Radio from 2015/06/25-28.

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Signals, signals and signals

DF3LZ
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digitelektro1 Digitelektro @digitelektro1 ·
10 May

This week's finished X-band kits are ready — and their new owners are already waiting for them.

Designed for X-band weather satellite reception in the 7.5–8.5GHz range.

Features:
• LNA NF <1dB (0.8dB @ 7.8GHz)
• Down-converter with dual inputs
• Remote control via Bluetooth

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sv2hwm Merkouris SV2HWM @sv2hwm ·
5 May

As 🛰️ArcticSat-1 is currently xmitting at 19200 bd, I thought it might be possible to trick the 9k6 GMSK USP SoundModem into demodulating these 19k2 packets, by adjusting the ppm value in the RX Corr field. Since 9k6 is half of 19k2, the required ppm value is -500000. It worked!

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ibelings Pieter Ibelings @ibelings ·
23 Apr

Quick look at SpectraSat with a NetSDR. All upcoming passes are shown on one timeline. Click the one you want and Doppler corrections stream into SpectraFlux to keep the IQ centered on the bird. No chasing the signal with your mouse on the waterfall.

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ibelings Pieter Ibelings @ibelings ·
24 Apr

Turning a $3 LoRa chip into a GPS-locked coherent radar. Lots of possibilities at HF,VHF,UHF and beyond. https://github.com/ibelinp/SX1262_CHIRP

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