To: | rsgb_lf_group@blacksheep.org |
---|---|
Subject: | Re: VLF: EbNaut transmissions on lower frequencies?, pre-tests: 6.47kHz |
From: | Paul Nicholson <vlf0403@abelian.org> |
Date: | Sat, 4 Jun 2016 16:57:30 +0000 |
In-reply-to: | <57514ED7.5080904@posteo.de> |
References: | <154c32c4dba-373a-24653@webprd-m58.mail.aol.com> <573CAF79.9040701@abelian.org> <573CBBF0.4030701@posteo.de> <573E5907.6020107@posteo.de> <573EA094.3040205@abelian.org> <573EF90F.1080201@posteo.de> <573FC4DA.3080107@abelian.org> <5740842D.3030000@posteo.de> <5744FA27.6010703@posteo.de> <574AF1CA.7080702@posteo.de> <57512B49.2080305@abelian.org> <57514ED7.5080904@posteo.de> |
Reply-to: | rsgb_lf_group@blacksheep.org |
Sender: | owner-rsgb_lf_group@blacksheep.org |
User-agent: | Mozilla/5.0 (X11; Linux x86_64; rv:38.0) Gecko/20100101 Thunderbird/38.6.0 |
Stefan wrote: > Message 22.05.2016: 'cqcq dk7fc in jn49ik' 18.22 dB in 4.06 uHz, http://abelian.org/vlf/tmp/160604a.gif which gives Eb/N0 = -2.35 dB on the 20 char message > Message 25.05.2016: 'not very easy' 16.24 dB in 7.97 uHz, http://abelian.org/vlf/tmp/160604b.gif and Eb/N0 = -2.46 dB. Seems we are close with both messages, just needs another dB to have a chance of decoding and another 2dB would make decode very likely. These must be amongst the narrowest bandwidth detections anyone has used. The day/night phase shift doesn't seem to be causing us any problem. But, I wonder if I could gain another dB by adjusting for a nominal diurnal. I can use these recordings to try that. -- Paul Nicholson -- |
<Prev in Thread] | Current Thread | [Next in Thread> |
---|---|---|
|
Previous by Date: | Re: LF: EbNaut beaconing on LF from JN80, Michel Brunel |
---|---|
Next by Date: | LF: new VLF rx stn, uwe-jannsen |
Previous by Thread: | Re: VLF: EbNaut transmissions on lower frequencies?, pre-tests: 6.47kHz, DK7FC |
Next by Thread: | Re: VLF: EbNaut transmissions on lower frequencies?, pre-tests: 6.47kHz, DK7FC |
Indexes: | [Date] [Thread] [Top] [All Lists] |