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References: [ +subject:/^(?:^\s*(re|sv|fwd|fw)[\[\]\d]*[:>-]+\s*)*LF\:\s+Coherent\s+BPSK\s+on\s+LF\s+using\s+EbNaut\s*$/: 49 ]

Total 49 documents matching your query.

41. Re: LF: Coherent BPSK on LF using EbNaut (score: 1)
Author: IZ7SLZ <[email protected]>
Date: Sat, 24 Oct 2015 00:57:08 +0200
In fact, impedance transformer was by-passed also. Now it is fixed. I have driver stage to the variometer through the transformer. Neon lamp lights up more ! Please check next transmission Thank you.
/rsgb_lf_group-archives/html/rsgb_lf_group/2015-10/msg00367.html (12,960 bytes)

42. Re: LF: Coherent BPSK on LF using EbNaut (score: 1)
Author: Markus Vester <[email protected]>
Date: Fri, 23 Oct 2015 19:44:29 -0400
Bingo! Were getting closer to the threshold... no detectable peak in the squared rawsyms spectrum but an instant decode. Very nice! I'm off to bed now but data will be saved during the rest of the ni
/rsgb_lf_group-archives/html/rsgb_lf_group/2015-10/msg00368.html (14,057 bytes)

43. Re: LF: Coherent BPSK on LF using EbNaut (score: 1)
Author: edgar <[email protected]>
Date: Sat, 24 Oct 2015 12:58:58 +1100
Hi Markus, Is it feasible to try receiving Coherent BPSK at Moonah? Regards, Edgar Moonah, Tasmania.
/rsgb_lf_group-archives/html/rsgb_lf_group/2015-10/msg00369.html (11,214 bytes)

44. Re: LF: Coherent BPSK on LF using EbNaut (score: 1)
Author: Markus Vester <[email protected]>
Date: Sat, 24 Oct 2015 04:33:26 -0400
Hi Edgar, yes, sure. On the RX side, you could use one of your IDC's with a Rubidium-derived LO (eg 125 kHz), and preferably 1pps lock for the SpecLab samplerate.. On the TX side, a stable and known
/rsgb_lf_group-archives/html/rsgb_lf_group/2015-10/msg00371.html (12,599 bytes)

45. Re: LF: Coherent BPSK on LF using EbNaut (score: 1)
Author: Paul Nicholson <[email protected]>
Date: Sat, 24 Oct 2015 08:35:16 +0000
Thanks, I was wondering about those. The tx is 155km from here. Those sidebands might turn out to be useful markers. Decoded easily: Eb/N0=7.5 ber=0.19 decode time 22 seconds Quite a strong signal, t
/rsgb_lf_group-archives/html/rsgb_lf_group/2015-10/msg00372.html (12,845 bytes)

46. Re: LF: Coherent BPSK on LF using EbNaut (score: 1)
Author: edgar <[email protected]>
Date: Sat, 24 Oct 2015 20:08:01 +1100
Hi Markus, Sounds interesting. But I think I will continue with my present projects. Thank you. Regards, Edgar Moonah, Tasmania.
/rsgb_lf_group-archives/html/rsgb_lf_group/2015-10/msg00375.html (10,087 bytes)

47. Re: LF: Coherent BPSK on LF using EbNaut (score: 1)
Author: Markus Vester <[email protected]>
Date: Sat, 24 Oct 2015 06:01:41 -0400
Hi Domenico, for the successful 23 UT decode, error count and symbol EbN0 could be improved by slightly tweaking the time and frequency offsets. Unfortunately, none of the subsequent transmissions (0
/rsgb_lf_group-archives/html/rsgb_lf_group/2015-10/msg00377.html (14,439 bytes)

48. Re: LF: Coherent BPSK on LF using EbNaut (score: 1)
Author: Paul Nicholson <[email protected]>
Date: Sat, 24 Oct 2015 13:37:23 +0000
Having decoded the 20:00 UT 22 character message, I re-encoded it and used the symbols to phase modulate the received signal. The result is an unmodulated carrier which I can take measurements from.
/rsgb_lf_group-archives/html/rsgb_lf_group/2015-10/msg00388.html (11,670 bytes)

49. Re: LF: Coherent BPSK on LF using EbNaut (score: 1)
Author: Paul Nicholson <[email protected]>
Date: Mon, 26 Oct 2015 16:45:10 +0000
Today I ended my brief foray into 137 kHz. The battery was going flat on the rx so I took it down. Reception at LF seems quite easy compared to VLF: much lower noise levels and much less interference
/rsgb_lf_group-archives/html/rsgb_lf_group/2015-10/msg00424.html (10,990 bytes)


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