These transmissions have been spotted during the last weekend on 4155.0 KHz/USB by ANgazu using a remote KiwiSDR located in Norway.
The waveform has a bandwidth of 2600 Hz and use OFDM technology for 28 channels with BPSK modulation at rate of 65.6 symbols/sec. Speed and modulation are confirmed by analyzing the whole signal and also a single channel.
Almost certainly it is a Skysweep Technologies proprietary waveform, probably test tarnsmissions. The user is unknown.
The waveform has a bandwidth of 2600 Hz and use OFDM technology for 28 channels with BPSK modulation at rate of 65.6 symbols/sec. Speed and modulation are confirmed by analyzing the whole signal and also a single channel.
Almost certainly it is a Skysweep Technologies proprietary waveform, probably test tarnsmissions. The user is unknown.
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| Fig. 1 - analysis of the whole signal |
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| Fig. 2 - analysis of the upper channel |
https://yadi.sk/d/pb0xIcWX3PUpUq