2018-01-22

DP0GVN: WSPR beacon received on 30m


WSPR beacon DP0GVN (see previous post), located at at the German Antarctic Research Station "Neumayer III", transmits regularly on 30 and 20 m (10 and 14 MHz). 

This evening its weak signal is decoded in Greece. The radio is an IC-706 MkII with a vertical antenna and WSJT-X v1.8.0 software. 

Here are the first three WSPR packets:


1804  -26   0.3   10.140158    4   DP0GVN        IB59     33  12316
1816  -27   0.3   10.140158   -4   DP0GVN        IB59     33  12316
1828  -26   0.4   10.140159   -2   DP0GVN        IB59     33  12316

DP0GVN: WSPR beacon in Antarctica


A few days ago, the ARRL site announced that DARC, in cooperation with two German universities, would install a WSPR receiver and beacon in Antarctica. The receiver is based on the Red Pitaya development board, which can function as an SDR transmitter and receiver. The callsign would be DP0GVN. 

According to the entry in QRZ.COM, DPØGVN is a club station located at the German Antarctic Research Station "Neumayer III" in Dronning Maud Land, Antarctica. The call sign is regularly being activated by station personnel as well as visitors.

This morning I transmitted on 40 m (7 MHz) WSPR with 5W and I was glad to see on WSPRnet that DP0GVN received my signal and reported it to the server. 


Timestamp    Call    MHz    SNR    Drift    Grid    Pwr    Reporter    RGrid    km    az
2018-01-22 02:34      SV1XV      7.040074      -20      -1      KM18ua      5      DP0GVN      IB59uh      12356      191
2018-01-22 02:12      SV1XV      7.040072      -18      0      KM18ua      5      DP0GVN      IB59uh      12356      191
2018-01-21 18:20      SV1XV      7.040074      -26      -4      KM18ua      5      DP0GVN      IB59uh      12356      191


Now I hope to receive their WSPR signal, they transmit with 5W on a vertical antenna, usually on 10 and 14 MHz, but the noise level at my location is much higher.

2017-12-16

LoTW to support Worked All Zones (WAZ) award



Map of CQ Zones used in WAZ award

A few years ago ARRL announced that the Logbook of The World (LoTW) would support the prestigious Worked All Zones award, which is managed by CQ-Amateur-Radio magazine. Finally on December 12, 2017, the official announcement for WAZ via LoTW was published on the ARRL site:

Logbook of the World to Add Support for CQ WAZ Award


I checked the "Your QSOs" tab on my LoTW account and I noticed that a new award account option is now available in the query form: "WAZ: SV1XV - GREECE".

LoTW QSO query form with the WAZ option

Support for a WAZ account and a statistics table is not available yet in the "Awards" tab, but I expect this to become available soon.

Now, I am worried, because many LoTW users do not handle their CQ zone information properly.

  • Some do not list their CQ zone at all
  • Other swap the CQ and ITU zones by mistake
  • A small number list a wrong CQ zone
If you are reading this, and you have not paid any attention to CQ zones in the past, would you please ensure that your zone data on LoTW is correct?


According to my logs (kept in Logger32), I can barely manage to get the WAZ Mixed using only LoTW credits. However there may be problems, like the ones listed above, with these confirmations.

Merry Cristmas


2017-11-19

SAR for missing submarine ARA San Juan

The following message was posted to UDXF by Daniel, LU5EMM and lists a number of MW and HF channels. All radio operators and vessels are requested to keep watch for missing submarine ARA San Juan. 
 
ALL RADIO COLLEAGUES AND / OR VESSELS ARE REQUIRED 
TO BE ATTENDED TO ALL THE FREQUENCIES OF EMERGENCY 
CALLING BY THE CREW OF THE SUBMARINE "ARA SAN JUAN", 
WHICH IS UNCOMFORATED SINCE DAY 15/11 / 17

Frequencies in TELEPHONY and TELEGRAPH.

2065.0 kHz 416 kHz
2182.0 kHz 437 kHz
3023.0 kHz 500 kHz
3860.6 kHz 4239,5 kHz
4125.0 kHz 4304,0 kHz
4143.6 kHz 8447,0 kHz
6218.6 kHz 8528.0 kHz

PLEASE SHARE / SPREAD

It is also recommended to watch 4340.0 kHz, this being the transmission frequency for "type 0050" and similar Indicator Buoys. However it is not known if San Juan was equiped with a buoy of this type. 

2017-11-18

Νεότερα για την εφαρμογή τύπου APRS από την ΤΡΑΙΝΟΣΕ

Η γνωστή εφαρμογή της ΤΡΑΙΝΟΣΕ Α.Ε. που δείχνει τις θέσεις προαστειακών αμαξοστοιχιών σε χάρτη (βλέπε προηγούμενη ανάρτηση) είχε τεθεί εκτός λειτουργίας μετά τις αλλαγές των δρομολογίων Αθηνών - Αεροδρομίου - Κιάτου τον Ιούλιο 2017. 

Σήμερα διαπίστωσα ότι λειτουργεί και πάλι, αλλά με λανθασμένες ενδείξεις στα εικονίδια των αμαξοστοιχιών, π.χ. αμαξοστοιχία Αεροδρόμιο - Αθήνα έχει εικονίδιο "AL" (Άνω Λιόσια) και αμαξοστοιχία Αθήναι - Κιάτο έχει το σύμβολο του αεροδρομίου.

Επίσης απεικονίζονται και οι αμαξοστοιχίες Λαρίσης - Θεσσαλονίκης, αλλά με λανθασμένο υπόμνημα, π.χ. αμαξοστοιχία Λάρισα - Θεσσαλονίκη έχει ένδειξη "Θεσσαλονίκη - Θεσσαλονίκη".