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Receiving ISS SSTV images - Expedition 66 - ARISS Series 19 Lunar Exploration

John, DK9JC & AK9JC
Satellite
30. Dezember 2021
Expedition 66 - ARISS Series 19 Lunar Exploration

After I kept seeing new SSTV images sent from the ISS on Twitter, I thought I'd give it a try too. Since I've been doing a lot of radio via FM amateur radio satellites lately anyway, I have a small 4 element LogPer directional antenna at the window anyway.

The free open source Android software "Robot36" was often recommended as software. I was very surprised when it gave a very clear picture even without a cable between my handheld radio and my mobile phone. In Robot36, however, you should select the mode manually and not leave it to chance whether "auto" works. Currently PD120 was used, which is what ARISS announced (see original message below).

I was able to achieve very good results with my Yaesu FT2 and FT4. With every pass I could decode at least 1 complete picture. The antenna was always an Anjo 4 ele logper held out of the window on a 2m wooden broomstick and the ISS was tracked via the Android app "ISS Detector".

Weiterlesen: Receiving ISS SSTV images - Expedition 66 - ARISS Series 19 Lunar Exploration

WSJT-X: Correlation between signal reports and bandwidth

John, DK9JC & AK9JC
Equipment
20. Juni 2021
IC-7300 at 50Hz bandwidth

Recently, I saw a newcomer's post on Twitter regarding his first WSJT-X session. I noticed right away that he only decoded a handful of stations, but those with supposedly extremely good reports. This is what happens when you set your receive bandwidth extremely low. This means that you only receive signals that lie within this range. If we remember again our education, we find out that a normal report refers to a bandwidth of 2.5kHz. In this articel I explain the fundamentals about that.

Weiterlesen: WSJT-X: Correlation between signal reports and bandwidth

Yaesu FT-891 FT-8x7 DK9JC Sound Interface

John, DK9JC & AK9JC
Equipment
16. Mai 2021
Galvanic isolated Sound Interface

Some time ago I already built some "loose" interfaces for my FT-817. I used these later on my FT-891. The CAT, respectively the FTDI USB to serial converter I needed at the FT-8x7, I don't need at the FT-891 anymore, because it already has CAT via USB integrated. The FT-891 simply uses a Silicon Labs CP2105-F01 USB/Serial UART converter internally. As with many other TRXs, this is not galvanically isolated, but the engineers thought of something. Apparently it works well anyway. I have had no problems at least in the last 2 years. In this article I show you my solution for this problem.

Weiterlesen: Yaesu FT-891 FT-8x7 DK9JC Sound Interface

SOTA: August 2020 - Mountain Goat 1.000 points tour

John, DK9JC & AK9JC
SOTA
16. August 2020
1000 points Mountain Goat

Some quick shots from this week while we did some SOTA in the in the northern Black Forest region. We started on Hohloh DM/BW-054 984m. The next day we went to Hornisgrinde DM/BW-019 1163m. After those 2 I had 994 SOTA Points, only 6 points short of the so hard wanted iceblock trophy.  We then drove one hour further south to the Brandenkopf 945m DM/BW-067. I was not prepared for this (battery-wise) and we hoped that somehow 4 QSOs would come into the log. It became then nevertheless even 10 QSO, until the device switched off from the low voltage. Now I am SOTA “Mountain Goat”. After 177 SOTA activations in 7 countries in 5.5 years. I already ordered the award and I applied for the trophy.

Weiterlesen: SOTA: August 2020 - Mountain Goat 1.000 points tour

SOTA: FL/VO-023 Le Donon and FL/VO-090 Petit Donon 28.12.2019

John, DK9JC & AK9JC
SOTA
27. Juli 2020
FL/VO-023 Le Donon

Last year in December I wanted to activate 2 mountains in the Vosges. These two are not too far from my home town. Both could be done from the same parking lot. That day it was below 0 degrees °C and we had freezing rain on the Petit Donon. But in return we got 3 points winter bonus each in addition to the 2 times 10 points. 26 points with only one parking stop is not too bad. I was already on the big Donon at the end of 2017, actually you have to go there more often. Simply very nice there. 13 QSO vom VO-023 on 40m and 20m SSB. Exactly 2 hours after the last QSO we logged the first one from VO-090. 16 QSO here on 40m and 20m SSB with best DX AE7KI in TN. Always great to work DX with 5W.

Weiterlesen: SOTA: FL/VO-023 Le Donon and FL/VO-090 Petit Donon 28.12.2019

SOTA: EI/IS-127 Carhoo Hill Ireland - Jan 02, 2019

John, DK9JC & AK9JC
SOTA
27. Juli 2020
SOTA: EI/IS-127 Carhoo Hill

After EI/IS-050 Torc Mountain the day before we took EI/IS-127 Carhoo Hill 02/Jan/2019 with great condx. Worked a lot US and VE. Thank you GM6ZAK, EA2CKX, EA2DT, G0VWP, G4AFI, M7AFI, DL5AWI, G3OCA, IK2LEY, DG1NPM, F4HZR, S54KD, DL3KZA, AB4PP, N4EX, AA1VX, SV2RUJ/P, VE1WT, SP9ETA, KB9ILT, (18 MHz!). I can highly recommend Ireland. What a great landscape!

Weiterlesen: SOTA: EI/IS-127 Carhoo Hill Ireland - Jan 02, 2019

Weitere Beiträge ...

  1. SOTA: EI/IS-050 Torc Mountain Ireland - Jan 01, 2019
  2. 6m-Band: Ab sofort für Klasse E geduldet und mehr Leistung für Klasse A
  3. Raspberry Pi4 for Digimodes like FT8 and others - SOTA tested
  4. SOTA: 30 Dec 2019 - 3 summits in DM/RP and ON/ON
  5. SOTA: DM/SR-012 Schaumberg 17.11.2019 GMAC
  6. Warum sollte man die US-Amerikanische Amateurfunk Prüfung machen?
  7. 28. Sept 2019: US Amateurfunkprüfung im Saarland
  8. Rheintal Electronica: Funk- und Elektronikbörse bei Karlsruhe dieses Jahr abgesagt
  9. D4D DSB Transceiver Kit for Digital Mode for only $39.95
  10. Bald ist wieder Ham Radio 2019 (mit Fotos aus 2018)
  11. FT8 - ALC korrekt einstellen für ein sauberes Signal
  12. Chinese Power Cable for Yaesu FT-450 FT-891 FT-991 Kenwood TS-480 ICOM IC-7000
  13. Funken vom Erbeskopf (SOTA DM/RP-158) - Genehmigung erforderlich!
  14. Mag Loop Magnetic Loop DIY with trashed 26 inch bicycle rim
  15. SOTA: DM/RP-180 Simmerkopf - 18.11.2018

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