Re: LF: Re: LF EbNaut tonite

[Markus Vester <markusvester@aol.com>]

We could move closer together, e.g. 137520 and 137519 Hz. Although the higher order sidebands may overlap, there should be no mutual interference because of orthogonal symbols, i.e. the "other" carrier going through exact multiples of 360° during the symbol integration time.

73, Markus


-----Ursprüngliche Mitteilung-----
Von: jrusgrove@comcast.net <jrusgrove@comcast.net>
An: rsgb_lf_group@blacksheep.org <rsgb_lf_group@blacksheep.org>
Verschickt: Mi, 14. Nov. 2018 5:27
Betreff: Re: LF: Re: LF EbNaut tonite

Stefan

 

The 0000Z transmission (first one captured tonight) was best this evening ... copy below. Similar copy on 0100Z transmission, no copy on 0200Z and 1.8 dB Eb/N0 on 0300Z.

 

Marcus and Domenico ... unfortunately just noticed that the setup didn't have sufficient bandwidth to include your frequency. 

 

 

 

Jay W1VD  

 

 

----- Original Message -----

From: DK7FC <selberdenken@posteo.de>

Reply-To: <rsgb_lf_group@blacksheep.org>

To: <rsgb_lf_group@blacksheep.org>

Sent: 11/13/2018 3:46:16 PM

Subject: Re: LF: Re: LF EbNaut tonite

---

Hi Jay,

Am 13.11.2018 21:31, schrieb jrusgrove@comcast.net:

Stefan

 

Did you announce your intentions for tonight's EbNaut transmission ... if so, I must have missed it.

 

Jay W1VD

Yes:

f = 137.620 kHz
Start time: 13.NOV.2018  21:00 UTC (hourly, until including 6 UTC)
Symbol period: 3 s
Characters: 5
CRC bits: 16
Coding 8K21A (!)
Antenna current: 4 A
Duration: 26:24 [mm:ss]

From my todays email of 9:21 UTC.

73, Stefan