SO5CW - DJ5CW's station in Poland

I am using the callsign SO5CW during my holiday operations from Poland since December 2018 (formerly SP/DJ1YFK). Since September 2024, I am also operating my station remotely.

QTH:	near Chynów, 35km south of Warsaw
Grid:	KO01MW
PGA:	GJ03
RIG:	IC-746PRO (local) / IC7100 (remote), TS-440S (backup)
Ant:	2el/2el/3el (20m/15m/10m) Yagi @ 12m, Vertical (16m + automatic tuner) on 40m/60m/80m/160m, 2m 17el F9FT Yagi

The SO5CW QRSS grabber and WSPR receiver is running at this location on 30m.

In 2008 and 2010 I was also QRV from Poland as SP/DJ1YFK from SP5ZCC / SN5Z (KO02PF). Between 2012 and 2024 I occasionally operated from near Warka, KO01NU.

QSL: I don't collect paper cards any more. If you need a card, please request it by email (fabian@fkurz.net).
I am a member of PZK and DARC, so you can send QSLs to SO5CW via DJ5CW to DARC bureau, or via the PZK bureau (OT-31). QSL cards arriving in via PZK are replied to by Wiesław, SQ9V (thanks!).
All contacts are uploaded to LoTW within a few days of the QSO.

Activities (SO5CW):

December 24 - 29, 2018 (645 QSOs)
August 21 - 25, 2019 (500 QSO)
All 2020 activities were cancelled due to COVID-19 :-(
September 9 - 16th, 2021 (560 QSOs)
February 24 - March 1, 2022 (180 QSOs)
August 30 - September 15, 2022 (700 QSOs)
December 22 - 29, 2022 (570 QSOs)
May 12 - 29, 2023 (incl. KOS, Baltic Contest, CQ WPX CW, 2600 QSOs)
August 31 - September 17, 2023 (SSB Fieldday, VHF contest, FOC QSO Party, WAE SSB, SAC CW, 1100 QSOs)
June 28th - August 3rd, 2024 (VHF contest, IARU HF, IOTA, EUHFC, 2000 QSOs)
August 30th - September 14th, 2024 (450 QSOs)
starting September 15th: Constantly QRV via remote, see logs

Pictures from the QTH

Antennas in the sunset in KO01MW. Triband yagi @ 13m, wire dipoles for 40m/80m.

Operating in December 2022. 5°C inside the shack

During the September 2022 FOC BW QSO Party

Antennas in September 2022: Triband Yagi and wire dipoles

40m - 160m vertical on 18m spiderbeam mast with CG3000 tuner

First attempts on VHF in IARU contest (September 2023)

Paint job almost done (July 2024) - tower still not up...

SO5CW SO2R setup in IARU 2025 with SO2R Mini+

Takeoff from SO5CW

The terrain around the SO5CW QTH is very flat. Find some terrain plots into different directions below, plotted using Geoportal.gov.pl (units = meters).

USA (NW)

Japan/Asia (NE)

South America & VK/ZL LP (SW)

South East

See this QTH on heywhatsthat.com

SO5CW Remote Setup

Since September 2024, the station can be remote controlled. Below you'll find a block diagram of the setup.

Internet connectivity is be realized via 4G with a Teltonika RUT240 and a VPN connection to my own OpenVPN server (hosted at a German provider for virtual private servers). Operating the IC-7100 with RemoteRig RR-1258MkII boxes shows a delay of less than 100 ms.

Only the router is always on, the rest of the station is switched on and off via a relay/contactor that is controlled by an GPIO of the router.

The tower is cranked down to 8m while I am away, so the Yagi is not as high as during on-site operation.

Webcam

Last modified: Tuesday, 06-Jan-2026 15:40:44 CET