2015-10-31

CQ WW SSB contest 2015 - τι καλά μας έφερε?

Δυστυχώς τίποτα αξιολογο, μόνο ένα νέο band slot, V47T στα 40 m, το οποίο και δεν ανεβάζει LoTW. Επίσης μερικά perifxes για το CQ WPX: A93, HB2, GM9, IO9, TO90. Τώρα υπομονή μέχρι το CQ WW CW στο τέλος Νοεμβρίου.


Κάθε πέρισυ και καλύτερα...



ITU 150 awards

Many amateur radio societies have organized within 2015 special award comptetitions for the 150th anniversary of ITU. The competitions come in the form of one or more special event stations with interesting prefixes. QSOs with them lead to some type of award.

RAAG SX150ITU award
The first award I managed to complete was the SX150ITU award from RAAG in Greece.

URE  ITU-150 Silver
Then the URE award from Spain, silver class.

MRASZ ITU-150 bronze
Finally today the MRASZ award from Hungary, bronze class.

I also qualify for the polish award, but I have not managed to apply using their web page.

There are more news, next Monday, the 2nd of November, the World Radiocommunication Conference 2015 (WRC-15), opens in Geneva, Switzerland, and shall last to 27 November 2015. Let's see what interesting prefixes are on the air for this event.

2015-10-28

MX beacon K on 7039.3 kHz

20151028 MX K 7039.2 kHz
Tonight I heard again after a long time the Letter Beacon (MX) "K" on 7039.3 kHz. This beacon is located in he Russian Far East, possibly near Petropavlovsk-Kamchatsky according to the IARU Region 1 Monistoring System and the HF underground wiki. While other beacons of this cluster moved out of the 40 m amateur radio band to 7509 kHz, this one remained on its old frequency.

 

2015-10-24

LPD RTTY beacon


Today I received a Radiometrix NTX2-434.650-10 LPD transmitter module which I ordered on eBay from mallinson-electrical. I integrated it with an Arduino Uno, a female SMA socket and a 3λ/4 antenna to build a small RTTY beacon. Output power is about 10 mW, consistent with the LPD specification CEPT/ERC Recommendation 70-03.

I programmed the Arduino with a modified version of M0UPU arduino code, which is published on the site of UKHAS


Reception of the LPD beacon using fl-digi

I hope some time within the next weeks to make a test transmission from a high location so anybody interested can get some hands-on experience with dl-fldigi reception of balloon signals.

The interesting news is that Radiometrix produces a new version of the transmitter, called NTX2B-FA, which is frequency programmable, so it can be tuned to more appropriate amateur radio frequencies near 432.8 MHz.



Νέα εμφάνιση στο digitalmode.gr

Σήμερα ανανεώθηκε η εμφάνιση του γνωστού ελληνικού ραδιοερασιτεχνικού blog digitalmode.gr το οποίο καλύπτει θέματα ψηφιακών ραδιοερασιτεχνικών επικοινωνιών στην Ελλάδα. Καλύπτει τα παραδοσιακά modes όπως packet radio, APRS κλπ, τις νέες τεχνικές ψηφιακής μετάδοσης φωνής D-STAR και C4FM καθώς και εξελίξεις από τον χώρο του WiFi και συναφών μεθόδων. Η ανανέωση έγινε εφικτή χάρις στην επίπονη προσπάθεια του Τάσου SV1RD.


2015-10-19

Logger32 version 3.50 update 218

There is a problem with update 218 of  Logger-32 version 3.50. It seems that the original ZIP archive with the update was corrupt and it blocked downloading the corrected version. 

K4CY recommends to delete the directory  "$(LOGGER32)\updates", in my case "H:\comms\logger32\updates". I tried it and it worked OK.

2015-10-17

Guardia Costiera Piaggio P-180 Avanti

20151007-LICC-MM62274
Αυτά τα ωραία αεροπλανάκια της Ιταλικής Ακτοφυλακής τα βλέπω εδώ και χρόνια στο αεροδρόμιο Fontanarossa της Κατάνης στη Σικελία (LICC) αλλά πάντα τύχαινε να ξεφύγουν από τον φωτογραφικό φακό μου. Άλλοτε ήταν σκοτάδι, άλλοτε ήταν παρκαρισμένα σε απρόσιτα σημεία, κλπ. Τελικά την περασμένη εβδομάδα πέτυχα το 12.01 στη φάση της τροχοδρόμησης και το τράβηξα με μια μικρή Nikon που έχω συνήθως στη ζώνη μου.

Dasher beacon on 7010 kHz


This morning, at about 05:20 UTC, the dasher beacon showed up again on its regular frequency just above 7010 kHz. I am not sure if it is actualy a dasher or a single letter beacon with id "T". 

This beacon is frequently heard during local evenings but usually it passess unnoticed, as its signal is lost below CW QSOs on this busy frequency.

2015-10-16

HABE Greek Adventure (2)

Today I had the chance to test DL-fldigi with a real balloon downlink, using the weak signal from HABE. I used an Icom IC-7100 radio connected via USB to a PC running Windows XP and DL-fldigi version 3.21.50. The antenna is a tribander vertical (6m, 2m, 70 cm) with a 15 m RG-213 transmission line. 

Screen capture of FL-digi in action
I understand that the balloon trackers transmitted telemetry using LPD devices at a power of only 10 mW. Modulation was FSK (nominally 425 and 850 Hz shift) with ASCII encoding. Shortly after lift-off, FL-digi managed to decode a number of packets on 434.650 MHz and 434.200 MHz and upload them to the HAB tracking server, before the balloons drifted to the north, behind Mt Parnis.

I would like to see in the future some experimental beacon with GPS telemetry using the FL-digi specific format, which would help us fine tune our receiving systems.


For further info, read the on-line manual: Beginners Guide to Tracking using dl-fldigi , on the UK High Altitude Society (UKHAS) Wiki.

2015-10-14

E51AAR TNX QSL

QSL E51AAR Yesterday I received via K7AR the QSL card for my CQ WW RTTY contest QSO with E51AAR at Rarotonga, South Cook Islands. 

An ATNO (all time new one) for me.  

This QSL card gets me to 277 confirmed entities, including deleted ones.

2015-10-12

HABE Greek Adventure (1)

It seems that next Friday, 16 October 2015, there shall be a High Altitude Balloon launch in Greece.  The following information was published in http://tracker.habhub.org .  

When:     Fri, 16 October, 09:00 – 13:00
Where:    Corinth, Greece (37.9355 N - 22.8131 E)
Project:  HABE 
Group:    Adam Cudworth 
Payloads: 
HABE 434.200 MHz USB RTTY 50 baud 425 Hz, ASCII-7-N-1
HABE 434.650 MHz USB RTTY 50 baud 850 Hz, ASCII-8 N-1


UPDATE 2015-10-13: According to Adam Cudworth on twitter, two separate balloon launches are scheduled:


Hi All,
We're off to Greece to fly balloons! Planning to fly two balloons on Friday around 10am Greek ISH time from Corinth.
Trackers:
- Balloon 1 - $$HABE on 434.200, 7n1, 425 shift
- Balloon 2 - $$HABE on 434.650, 8n1, 850 shift

Anyone in Greece or surrounding areas - trackers (via DL-FLDIGI) greatly appreciated. More the merrier! Reach me on IRC (cuddykid) on the day.

Hopefully we'll avoid the many mountains and land on land..
A big thanks to team AEOLUS for their help with organising.

Adam


Also the Aeolus team (J43VHF) is helping with the logistics of the operation. Adam is posting on Twitter as @adamcudworth .


Stay tuned for updates.








 

2015-10-03

IPMS Hellas exhibition 2015

DSCN0251
Me-163 rocked propelled fighter

Today I visited the IPMS Hellas 2015 exhibition. It takes place in an old hangar of the old Athens Airport. Many interesting exhibits, including aircraft and tank models, ship models, science fiction themes and miniatures.

SX-BBE
C-47B SX-BBE
There is a special exhibit with almost all aircraft types of the now defunct Olympic Airways and Olympic Aviation, starting with C-47 and ending with Airbus A340.
DSC 8957
A red hooded amazon and her pet monster
Please visit my album IPMS Hellas 2015 on ipernity.com, I shall gradually upload the best pictures of models from the event.