Форум радиолюбителей ДВ

New one for you / me  Alex , kiwi web sdr  not  far from  G3kev , east coast , using  mini-whip Ae

[g8fzk, my old class B call  , 1970's] 
20:18    136 R7NT de G8FZKSDR Op32 1797 mi -40 dB F:2% in  1540.9 Hz with 100w + W.sLoop
20:18    136 R7NT Op32 1540.9 Hz -40 dB |--------------------------------------------------------------------------------- ---------------------------- --------| Fade: 2%

73-G

The first public candidate release of WSJT-X 2.3.0 is now available for
download and use by beta testers. This release is your first chance to
try two new modes designed especially for use on the LF and MF bands,
and to provide feedback to the WSJT Development Team. The new modes are:

  - FST4, for 2-way QSOs. Options for sequence lengths from 15 seconds
    to 30 minutes, with threshold sensitivities from -20.7 to -43.2 dB in
    a 2500 Hz reference bandwidth.

  - FST4W, for WSPR-like transmissions. Sequence lengths from 2 minutes
    to 30 minutes, threshold sensitivities from -32.8 to -44.8 dB.

FST4-60 is about 1.7 dB more sensitive than JT9, largely because it uses
multi-symbol block detection where appropriate. With AP decoding in FST4
the advantage can be as much as 4.7 dB. Additional sensitivity details
with respect to path Doppler spread are illustrated in the following
graph comparing JT9 and FST4-60:
https://physics.princeton.edu/pulsar/k1jt/jt9_vs_fst4.pdf

FST4W-120 is about 1.4 dB more sensitive than WSPR, and FST4W submodes
with longer transmissions have proportionally better sensitivity.
Decoding probabilities are plotted as a function of SNR on the additive
white Gaussian noise (AWGN) channel for WSPR and all FST4W submodes
here: https://physics.princeton.edu/pulsar/k1jt/wspr_vs_fst4w.pdf

Tests over the past several months have shown FST4 and FST4W frequently
spanning intercontinental distances on the 2200 m and 630 m bands.
Further details and operating hints can be found in the "Quick-Start
Guide to FST4 and FST4W":

https://physics.princeton.edu/pulsar/k1jt/FST4_Quick_Start.pdf

We strongly recommend that users of JT9 and WSPR on the LF and MF bands
should migrate to the more sensitive modes FST4 and FST4W.


Links to installation packages for Windows, Linux, and Macintosh are
available here:
http://physics.princeton.edu/pulsar/k1jt/wsjtx.html
Scroll down to find "Candidate release: WSJT-X 2.3.0-rc1".

You can also download the packages from our SourceForge site:
https://sourceforge.net/projects/wsjt/files/
It may take a short time for the SourceForge site to be updated.

WSJT-X is licensed under the terms of Version 3 of the GNU General
Public License (GPL). Development of this software is a cooperative
project to which many amateur radio operators have contributed. If you
use our code, please have the courtesy to let us know about it. If you
find bugs or make improvements to the code, please report them to us in
a timely fashion.

We hope you will enjoy using this beta release of WSJT-X 2.3.0. Please
report bugs by following instructions found here in the User Guide:
http://www.physics.princeton.edu/pulsar/K1JT/wsjtx-doc/wsjtx-main-2.3.0-rc1.html#_bug_reports

      -- 73 from Joe, K1JT, Steve, K9AN, and Bill, G4WJS

С rw3adb ПОЛНОСТЬЮ СОГЛАСЕН !!!

Кстати, искал нормативные документы по санитарным нормам на эелектромагнитное излучение, нашел только от 1996 года и тот помечен как не актуальный.

При спуске КА учитывают наклон орбиты, если слишком крутой спуск - то снижение пойдёт по баллистической траектории, если слишком пологий - то будут отскоки от верхних слоёв атмосферы, прыжков таких может быть два и более перед тем как КА войдёт в атмосферу.

прежде чем «отскочить» обратно в космос.

Можно поискать список позывных и выдернуть его оттуда. И написать в рсгб чтоб все выдернули.
Вообще весь этот дип-серч каое-то шаманство реально станция не работает- и тут бац- три декода в дипе!

Yes your  right  Stefan .

repeating  noise patterns or  keying  artifacts , do present ''a'' detector  with a
tempting resolve , in a single pass  system, using look up table ,  frequency is  not too important ,
compared to the  'time'  stamp as the  output is always valid ,

Demonstrably ,.No intent to  defraud , its a  technical issue ,

The  software  is listed in psk-map Stats '   as    Op32Rx v1.8.6+crrl+opds/Rptr V1.4
Its obviously shipped  with a  pre-loaded  call  list to  enable  deep  search [ correlation]

I don't know , as to  who compiles , edits or  distributes the  list , spots me on 136
sometimes , along with  other anomalies ,  ie, no  MF tx permits  for  Russia , but
RN3AGC 2E0ILY 600m OPERA 2584 km 22:39:35,

This appears to be  fixed list ,  where as  the  Ros-Opera  app , dynamically maintains
and  purges the  deep search  list  after 8 days

Probably a good  time , before the  oncoming  season,  to  review the  content !

one question, how do  new  stations enter the  list ? is there a  contact point ?
these are  house keeping issues ,Ros addressed  by  decoding and web
support .

73-Graham
G0NBD