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Hi Joe,
nice to see your callsign again, and that you
were detected in the Ionian sea!
Yes as you say, the suggested frequency ranges were
reorganized in a recent software version from EA5HVK, using a common 1500
Hz audio center frequency for different bands and speeds. On LF, Opera
software now listens for Op-32 between 137.45 and 137.55 kHz, and most opds
observers have followed. However depending on the particular FFT settings,
the opds detection range usually extends a few Hz beyond that range, so you were
lucky last night ;-)
All the best,
Markus (DF6NM)
Sent: Sunday, October 19, 2014 8:26
PM
Subject: Re: LF: 136 Khz opera 32 deep
search last night km07ks
Thanks Dionysios and Terry GW0EZY for the reports
of the OP transmissions.
Thanks also to DF6NM for his grabber and accurate
freq measurements.
It seems many OP stations have migrated down about 50
Hz. Did I miss
something?
The TX was running 240 watts 2.2 amps
to the 100 m wire. Will be QRV
& QRO again
tonight.
73
Joe VO1NA
On Sun, 19 Oct 2014, Dionysios Vlachiotis
wrote:
> sv8rv km07ks Opera-32 correlation
>
>
date time call
distance frequency bandwidth snr
correlation
>
> 2014-10-19 03:54:24 VO1NA 5905km
137554.746Hz 2mHz -47.6dBOp 92% 15.1dB
> 2014-10-19
01:34:22 VO1NA 5905km 137554.746Hz 2mHz -47.0dBOp
84% 16.7dB
> 2014-10-18 22:58:33 DF6NM 1510km
137507.749Hz 2mHz -29.9dBOp 97% 20.0dB
> 2014-10-18
22:50:32 G3XDV 2266km 137529.800Hz 4mHz -39.3dBOp 100%
20.3dB
> 2014-10-18 20:34:20 G3XDV 2266km
137529.800Hz 2mHz -41.7dBOp 92% 19.9dB
> 2014-10-18
19:55:44 DF6NM 1510km 137507.749Hz 2mHz -33.0dBOp
88% 19.7dB
> 2014-10-18 18:24:46 G3XDV 2266km
137529.797Hz 9mHz -46.7dBOp 91% 17.7dB
>
>
>
73 de SV8RV
> Dionysios Vlachiotis
> Zakynthos (Zante) island
GREECE
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