2021-06-13

Receiving SV1NJX balloon tracker tests

Today, after an announcement on his blog , SV1NJX activated briefly a balloon tracker on 433.708 kHz using CW and FSK (ASCII 7N1, 50 baud, 450 Hz) at about 08:45 UTC. 

The tracker signals were of good strength but with very poor stability, with pronounced chirp in CW and gradual frequency shift on FSK. I managed to decode a few packets using my Icom IC-7100 with DL-FLDIGI 3.21.5 and with an RTL-SDR receiver with SDR# and FLDIGI 4.1.06. AFC was absolutely necessary in order to keep decoding.


$$$$SV1NJX-1,34,08:45:11,38.079212,23.881712,01054,001,0.12,43.0,06,01*82AA
$$$$SV1NJX-1,35,08:45:28,38.079308,23.881735,01044,001,0.12,43.5,07,01*87B3
$$$$SV1NJX-1,36,08:45:44,38.079281,23.881693,01056,002,0.11,44.5,07,01*E6BE

$$$$SV1NJX-1,55,08:55:02,38.079262,23.881783,01052,000,0.32,37.0,07,01*71C6

$$$$SV1NJX-1,90,09:12:02,38.079319,23.881777,01057,000,0.31,36.5,06,01*9C68
$$$$SV1NJX-1,91,09:12:18,38.079288,23.881748,01050,001,0.31,37.5,07,01*F973
$$$$SV1NJX-1,92,09:12:18,38.079288,23.881748,01050,001,0.31,37.5,00,00*7A36


The actual balloon launch will take plane in mid-July 2021.

2021-05-26

DP0POL on 14 MHz WSPR

 

 

 


The German research vessel RV Polarstern was received earlier this evening with weak WSPR signal on 14 MHz.

1648  -22  -0.9   14.097059    0   DP0POL        JP12     37   3067
1728  -21  -1.0   14.097059    0   DP0POL        JP12     37   3067

Polarstern currently operates in the Norwegian Sea.


2020-07-07

G3USF's Worldwide List of HF Beacons




In a previous post I reported the demise of the G3USF HF beacons list. Now the list is available once again, by G0KYA on the RSGB website as:

G3USFs-Worldwide-List-of-HF-Beacons

The latest version (PDF format) was published on 18 June 2020.


2020-05-21

SV1DB SK






Με λύπη διάβασα χθές στο blog του SV1BJY την επιβεβαίωση της πληροφορίας του θανάτου του Ντίνου Ψιλογιάννη SV1DB εξ αιτίας της πρόσφατης επιδημίας COVID-19. 

Ο Ντίνος ήταν από τους σημαντικότερους Έλληνες ραδιοερασιτέχνες. Ίδρυσε την Ε.Ε.Ε.Ρ. (1968) και μέσα από αυτήν προσέφερε την δυνατότητα απόκτησης ραδιοερασιτεχνικής άδειας σε πολλούς συναδέλφους, που το κατεστημένο της εποχής κρατούσε στο "ψυγείο".

Επίσης είχε μεγάλη τεχνική εμπειρία στις εγκαταστάσεις κεραιών και κεραιοσυστημάτων για μεγάλες εγκαταστάσεις και αποτελούσε μια ανεξάντλητη πηγή πληροφοριών για το θέμα.

Το blog του Ντίνου παραμένει προς το παρόν προσβάσιμο στην διεύθυνση http://sv1db.wordpress.com/ 


Fortune cookie

Fellow programmer, greetings!  You are reading a letter which will bring you luck and good fortune.  Just mail (or UUCP) ten copies of this letter to ten of your friends.  Before you make the copies, send a chip or other bit of hardware, and 100 lines of 'C' code to the first person on the list given at the bottom of this letter.  Then delete their name and add yours to the bottom of the list.

Don't break the chain!  Make the copy within 48 hours.  Gerald R. of San Diego failed to send out his ten copies and woke the next morning to find his job description changed to "COBOL programmer."  Fred A. of New York sent out his ten copies and within a month had enough hardware and software to build a Cray dedicated to playing Zork.  Martha H. of Chicago laughed at this letter and broke the chain.  Shortly thereafter, a fire broke out in her terminal and she now spends her days writing documentation for IBM PC's.

Don't break the chain!  Send out your ten copies today!