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Re: LF: EbNaut on LF

To: [email protected]
Subject: Re: LF: EbNaut on LF
From: [email protected]
Date: Wed, 17 Aug 2016 18:01:07 -0230 (NDT)
In-reply-to: <[email protected]om>
References: <[email protected]> <[email protected]> <[email protected]> <[email protected]> <[email protected]> <[email protected]om>
Reply-to: [email protected]
Sender: [email protected]
Hi Domenico,

I will be happy to try again tonight.  If that fails we can try longer
symbols.

73 and thanks
Joe VO1NA

On Wed, 17 Aug 2016, Domenico IZ7SLZ wrote:

Hello Joe and group,

Last night i have recordered your signal on 137777 Hz and noted a good
carrier peak arond 02:00.  Unfortunatly i was not able to decode any of
your 54 characters EbNaut transmissions. I have tried to workaround with
time offsets without success.
I think that Eb/No produced by my setup is not enought.
Hope that other "EbNauter" are more lucky than me.
Thank you anyway Joe for the fun.
73 all, Domenico iz7slz

On 16 Aug 2016 20:40, <[email protected]> wrote:

OK Stefan, lets try a shorter message (54 chars) tonight starting 2300 utc
and every 15 mins.  150 watts 2 amps RF. 137.777 kHz  1432 0.2 s
symbols, 4K19A.

I like my 32 bit machine too!

Thanks for the helpful advice Markus.  I noticed the different colours
on your grabber.  Will go for a shorter message this time.

73
Joe

On Tue, 16 Aug 2016, DK7FC wrote:

Hi Joe,
Unfortunately it looks like the EbNaut decoder can't decode 155
characters on this PC (4 GB RAM). The number of characters seems to be
limited to 66 :-(
I don't have any 64 bit systems available here.

73, Stefan

Am 16.08.2016 01:24, schrieb [email protected]:

Dear Group,

Reports of the OP32 sigs from R7NT, F5WK, Graham, Markus, Hugh, Stefan
Dominico and others who I inadvertently left out are gratefully
acknowledged.

Tonight by popular demand starting 2330 and every 15 mins, EbNaut 155
chars 0.2 seconds 771.2 s message duration, 4K19A polynomial.  500w
3.5A to the 100m RL. Reports most welcomed. Good luck to all.
(Let's hope I've set it up correctly!)

Joe VO1NA

On Mon, 15 Aug 2016, DK7FC wrote:

Hi Markus,
Thanks, very nice. 131 characters in 0.2 s symbols, that's great!

Joe, could you run a similar transmission again? Maybe with a longer
text :-)

73, Stefan

Am 15.08.2016 15:05, schrieb Markus Vester:

Hi Stefan, here's a result from Joe's 131 character transmission, Dec
4/5 2015.

Best 73,
Markus


-----Urspr√ľngliche Mitteilung-----
Von: DK7FC <[email protected]>
An: rsgb_lf_group <[email protected]>
Verschickt: Mo, 15 Aug 2016 1:55 pm
Betreff: Re: LF: last 23 Hr 136 op32

Hi Joe,

Is it right that you sent some EbNaut with many symbols on LF in the
past (last season) ?
I didn't give it a try that time. Now i would be interested in a TA
detection of an EbNaut signal.
Which symbol length did you choose that time?

73, Stefan


Am 15.08.2016 01:13, schrieb [email protected] <mailto:[email protected]>:
Thank-you Graham and Dominico.

I was suprised to get the reports because there was a mismatch.
The Decca was on one module only to see what happens.

Just started an OP32 frame 2300 utc with 500 watts 3.5 amps and
without
a mismatch.

Friday night's lightning may have modified the tuning coil --
it took a while to clean the soot and ashes! It has been rebuilt
and seems to be working well. It has taps for the RL and another
for the tower as a back-up when the RL is out of service.

73 to all
Joe VO1NA


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