Hi Domenico,
It's important to turn off 'differential encoding' in the digimode
terminal.
Most PSK-modes have that option set by default, but for Ebnaut it
must be cleared.
When you set the symbol rate much higher than it needs to be (for
real transmissions), you can actually hear the phase reversals by
ear... when sending a long string of zero-bits, you should hear a
pure sine wave.
73,
Wolf DL4YHF .
Am 16.04.2016 um 17:22 schrieb IZ7SLZ:
Thanks Markus for advices,
i'm workaround on the settings without success till now.
Some Ebnaut's (13 char, 0.5s) again every 30' from 15:00U to
17:30U. This time with my traditional method i.e. ring modulator
driven by EbNaut-TX with the RDF phase locked loop.
73, Domenico
On 4/16/2016 1:23 PM, Markus Vester wrote:
Hi
Domenico,
on
the opds spectrogram there are currently two discrete
peaks on 137484 and 137486 Hz, plus some weaker ones
spaced at 1 Hz intervals. Thus it seems that you are
modulating with a regular "101010..." sequence rather
than an EbNaut message?
Best 73,
Markus
-----Ursprüngliche Mitteilung-----
Von: IZ7SLZ <[email protected]>
An: rsgb_lf_group <[email protected]>
Verschickt: Sa, 16 Apr 2016 11:41 am
Betreff: LF: sending EbNaut with SL on 137485.00 Hz
Hello LF,
i want to test this Wolf's Spectrum Lab feature
http://www.qsl.net/dl4yhf/speclab/EbNaut_Rcvr.htm#sending_ebnaut_with_SL
and i'm currently sending an EbNaut message on LF (13
characters,
0.5s/bit, 8K19A) each XX:00, XX:30. Last transmission at
12:00 UT
I'm using a non-linear PA so i want to check if SL MSK
modulator can help.
I want also check if, using SL scheduler, there are no
delay in the
activation time of the EbNaut sequence.
Thanks for the attention.
73 and good we.
Domenico, iz7slz
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