Re: LF: VO1NA - Opera32 detections - EbNaut

[Markus Vester <markusvester@aol.com>]

Hi Rob, Jay,

I think that 1 Hz carrier spacing is perfectly adequate. In case you choose one second symbols you could call it "OFDM", but of course slower signalling with any integer number of seconds will also fit in.

73, Markus .


-----Ursprüngliche Mitteilung-----
Von: Rob Renoud <k3rwr@md.metrocast.net>
An: rsgb_lf_group <rsgb_lf_group@blacksheep.org>
Verschickt: Mi, 5. Dez 2018 20:34
Betreff: Re: LF: VO1NA - Opera32 detections

Jay,

What separation would you suggest?  I can go anywhere with 1 mHz step size from the HP-3325 driver.

73,

Rob

On Dec 5, 2018, at 09:05, "jrusgrove@comcast.net" <jrusgrove@comcast.net> wrote:

Rob / Joe

 

Any chance you guys could cozy up within a couple Hz of each other when running EbNaut?

 

Jay W1VD  

 

 

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

From: Rob Renoud <k3rwr@md.metrocast.net>

Reply-To: <rsgb_lf_group@blacksheep.org>

To: <rsgb_lf_group@blacksheep.org>

Sent: 12/4/2018 6:11:55 PM

Subject: Re: LF: VO1NA - Opera32 detections

---

Hi Joe and Markus,

It would be fun putting a pair of EbNaut beacons on 2200M from North America later this week if there are no objections.  If you use 137477, Joe, I’ll be glad to run on 137490.

My TX is a Hafler P3000 at 250 watts to a top loaded vertical (14m vertical, 141m top loading) with a HP3325 driver employing phase modulation.

73,

Rob - K3RWR

Hollywood, MD

On Dec 4, 2018, at 16:03, Markus Vester <markusvester@aol.com> wrote:

Hi Joe,

thanks for your fine signals, both on the "77"ies on LF, as well as perfectly persistent on VLF 8270.0075 Hz.

No objections from this end toward EbNaut in the opds band. For us it's comfortable to reuse an already running SpecLab instance with data Export. If you decide for a relatively short message and simple coding, my grabber PC is capable of running an autodecoder instance. Spot on 137500 is not good as there are carriers from Russian Loran (all multiples of 6.25 Hz), and it can also be prone to intermodulation from 60 + 77.5 kHz time signals. Better stick to your 137477 "home" QRG, or perhaps go to one of the unofficial EbNaut gathering spots, e.g. 137490.

Best 73,
Markus (DF6NM)


-----Ursprüngliche Mitteilung-----
Von: jcraig <jcraig@mun.ca>
An: rsgb_lf_group <rsgb_lf_group@blacksheep.org>
Verschickt: Di, 4. Dez 2018 17:33
Betreff: Re: LF: VO1NA - Opera32 detections

Thanks Bernd and Stefan.

Thanks also to Markus for his OPDS work and web site.

The TX is a 50W class E feeding the 100x20m rotated L. The Decca PA is
taking some time off, following more charred wood and fused halyards...
quite alarming!

An XOR BPSK modulator module is QRV for some EbNaut.  Is there any
objection to using 137.5 kHz to send an EbNaut message later this
week?

73
Joe