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DK9JC & VK6PY setting new distance record on IO-117 Greencube

Details
John, DK9JC & AK9JC
Satellite
20 November 2023
VK6PY and DK9JC: IO-117 record
As announced by AMSAT in the USA on Saturday afternoon, John, DK9JC and Mark, VK6PY beat the previous distance world record on "GreeCube" on Tuesday. The former record was 12,966km and was set in January 2023.
 
"This took a few weeks of preparation. I first contacted Mark, VK6PY, at the beginning of October. Over the next few weeks, the overlaps (the so-called "footprint") were calculated and updated based on the current radar data. We had to find the optimum footprint. This was not so easy, as there was hardly any overlap. Mark also had to drive about 1,200km (each way) to get from his home in Perth, Australia, to the far north-western tip of Australia. This was unclear until about a day before the date, because while it was raining constantly in Germany, Mark had bushfires at the planned location," says John DK9JC.
 
In the end, everything worked out.
 
The new confirmed distance of 13,056km (8,112 miles) is now listed on the AMSAT website under " Satellite Distance Records". DK9JC was in JN39NE and Mark, VK6PY was in OG78BE.
 
Both stations were portable and battery powered. They each used 15-element yagis with 14.8 dBi gain and low-noise preamplifiers.
 
The following gear was used:
 
VK6PY: 15 ele diamond A430S15, JG LNA JG-ULNA70VOX (blue tube), IC-9700
DK9JC
: 15 ele diamond A430S15, JG LNA ULNA70VOX-E, IC-910
 
GreenCube (also known as Italy OSCAR 117, or IO-117 for short) is an Italian technology testing and amateur radio satellite in a medium earth orbit (MEO) at an altitude of around 5800 km.The digipeater transmits in the 70cm band and is currently the only usable satellite in such a high orbit.
 
 
Read more: DK9JC & VK6PY setting new distance record on IO-117 Greencube

Tripod mount for my 15 ele Diamond A-430S15 IO-117 Greencube

Details
John, DK9JC & AK9JC
Portabel
18 July 2023

People often ask me on Twitter how I mounted my 15 ele Diamond A-430S15 yagi antenna on my photo tripod. Well, it was quite simple. I have a normal photo tripod for photo cameras.

Diamond 15 element greencube io-117

I already had one at home anyway. So I measured the boom of the 15 ele Diamond A-430S15 and sent the measurements (boom diameter 22mm) to Dragan, 4O4A. He then made me a drawing that I could easily print with my own 3D printer. Of course, this part does not fit universally. It depends on the mounting plate.

Read more: Tripod mount for my 15 ele Diamond A-430S15 IO-117 Greencube

First EME QSO: And also portable and only powered with a battery

Details
John, DK9JC & AK9JC
Portabel
18 July 2023

I'm very happy that I was finally able to finish my first Earth-Moon-Earth 🌍-🌕-🌍 (#EME) QSO last week. It only worked out because Bernd, DL7APV did all the work with his amazing 128 (!) x 11 ele 70cm Yagis. He has a gain of incredible 33.7dB over a dipole:

DL7APV EME 128 11

Read more: First EME QSO: And also portable and only powered with a battery

Bald ist wieder Ham Radio 2023 (mit Fotos aus 2022)

Details
John, DK9JC & AK9JC
Veranstaltungen
11 June 2023
Ham Radio 2023

Nicht mehr lange, dann ist wieder Ham Radio in Friedrichshafen. Dieses Jahr zum 46. Mal. Wie die letzte 6 Jahre, bin ich auch dieses Jahr wieder dabei. Praktischerwiese verbinde ich die An - und Abreise immer mit einigen SOTA-Aktivierungen.

Die Ham Radio ist Europas bedeutendste Amateurfunkmesse und zeichnet sich durch die Kombination aus qualitativ hochwertigem Produktangebot und einem breit gefächerten Rahmenprogramm aus, das wir mit dem DARC als kompetenten Partner zusammenstellen. Es geht immer darum, aktuelle Themen aufzugreifen und gleichzeitig spannende Akzente zu setzen.

Die Ham Radio findet dieses Jahr von Freitag, 23. bis Sonntag, 25. Juni 2023, in Friedrichshafen am Bodensee statt. Die Tageskarte kostet 13 Euro. Die Drei-Tageskarte ist für 30 Euro erhältlich.

Weitere Informationen gibt es unter www.hamradio-friedrichshafen.de.

Read more: Bald ist wieder Ham Radio 2023 (mit Fotos aus 2022)

FT4 via LEO SAT IC-910H SatPC32

Details
John, DK9JC & AK9JC
Satellite
10 February 2023
Icom IC-910

I recently bought an Icom IC-910H. It was in extremely good condition and came with a dealer warranty. I just had to buy it. For SSB/Digi on SAT I only had my FT-817 and FT-818 and I wanted something with better internal filters and more power. Also, FT-817 and FT-818 can't do doppler correction while transmitting. During TX the 817/818's CAT is not responsive so I wanted something else.

In this post I explain what you need to do with an IC-910 for FT4 via SAT.

Read more: FT4 via LEO SAT IC-910H SatPC32

How to log a Satellite (SAT) QSO in Log4OM [QSL, eQSL, LOTW]

Details
John, DK9JC & AK9JC
Satellite
24 November 2022
Log4OM_SAT_QSO

Even though I have been using cloudlog to log my SAT QSOs for a long time, I would like to explain here how to log a QSO in Log4OM so that it also works as a SAT QSO in LOTW, eQSL and paper QSL (label).

If we entered a callsign we click to "My".

2022-11-24_19h52_51.png

Then we chose Satellite in the drop-down menu unter "Propagation". We also need to check the SATELLITE MODE box.

2022-11-24_19h54_03.png

Now we fill out these fields and we see "RS-44" on left and can chose VU.

2022-11-24_19h56_01.png

Without the correct SAT Name and Propagation mode set to Satellite it is not possible to get a LOTW cfm. All those values need to be correct.

How to add other SATs?

In the current version 2.23.0.0 the most popular LEO SAT RS-44 is missing, but this is not a problem. Log4OM simply uses a CSV file as database. We can edit this file to fit the LOTW name list. This step is important. If you add an own name, LOTW will never get a match and the QSO will still be unfonfirmed. All missing and new SATs can be added.

The file "satellites.csv" can be found under C:\Users\[YOURNAME]\AppData\Roaming\Log4OM2:

2022-11-24_19h51_00.png

I just added this line:

2022-11-24_19h51_42.png

Just comment if you have any questions regarding Log4OM and Satellite QSOs.

More Articles …

  1. July, 23 2022: Contact with Kjell Lindgren NA1SS aboard the International Space Station (ISS)
  2. Bald ist wieder Ham Radio 2022 (mit Fotos aus 2019)
  3. FT-817 FT-818 8x7 doppler correction with Gpredict
  4. Yaesu FT-817 non-ND with blown finals repair 2SK2975 FETs
  5. Receiving ISS SSTV images - Expedition 66 - ARISS Series 19 Lunar Exploration
  6. WSJT-X: Correlation between signal reports and bandwidth
  7. Yaesu FT-891 FT-8x7 DK9JC Sound Interface
  8. SOTA: August 2020 - Mountain Goat 1.000 points tour
  9. SOTA: FL/VO-023 Le Donon and FL/VO-090 Petit Donon 28.12.2019
  10. SOTA: EI/IS-127 Carhoo Hill Ireland - Jan 02, 2019
  11. SOTA: EI/IS-050 Torc Mountain Ireland - Jan 01, 2019
  12. 6m-Band: Ab sofort für Klasse E geduldet und mehr Leistung für Klasse A
  13. Raspberry Pi4 for Digimodes like FT8 and others - SOTA tested
  14. SOTA: 30 Dec 2019 - 3 summits in DM/RP and ON/ON
  15. SOTA: DM/SR-012 Schaumberg 17.11.2019 GMAC

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