Welcome to DL2AKT’s home page! My name is Jens. I am located in Riechheim, a small village near Erfurt in Thuringia/Germany, locator JO50NV . The top picture shows my amateur radio antennas. Enjoy the content of this site.
Locator: JO50NV 50°52.70′ N 11°07.23′ E, 410 m a.s.l. aprs.fi/#!call=a%2FDL2AKT&timerange=3600&tail=3600
Equipment: IC9100 (1.8 MHz…1296 MHz) allmode TRX running with Microham MicroKEYER III.
FTM-400D (144/432 MHz) FM , C4FM.
HLV1200 (144 MHz LDMOS PA).
Antenna System: LW (1.8/3.5/7 MHz & WARC), FB33 (3 Ele) 14/21/28 MHz, 9 Ele 144MHz, 16 Ele 432 MHz, 16 Ele 1296 MHz, X5000 , (144/432/1296 Vertical).
Perseus SDR with 144 MHz Converter.
Handheld TRX 144/432 MHz: FT3D (FM, C4FM), THD-72 (FM, APRS), RT3S (FM, DMR). TH-F7 (FM, SSB RX).
Portable equipment: IC-706 MK-2G, KX3
WIRES-X Interface HRI-200 (used with FTM-400D).
PI-STAR MMDVM Duplex Hotspot on Raspberry Pi Zero, see brandmeister.network/?page=repeater&id=2629197
DJSPOT FM Hotspot on Raspberry Pi Zero running svxlink software connected to FM-Funknetz (user DL2AKT-DJ) and Echolink (DL2AKT-L, node 118567)
Weather station DAVIS Vantage Pro2 with APRS and Internet links, life weather data at dl2akt.de/weather/ or aprs.fi/weather/a/DL2AKT-13 or weather.gladstonefamily.net/site/AT753
ADS-B (airplane location/flight data) SDR RX running on Raspberry Pi 4, feeding data to several hubs, e.g. https://opensky-network.org/receiver-profile?s=-1408231534
And a lot of equipment not used anymore, e.g. ATV.
My QTH has good take off from south to north west directions. North east is worst because of 100 m higher hill in 1 km distance. Below you can see the radio horizon calculated with DL2ALF’s Airscout software:
My QTH and equipment is good enough for 400km range in SSB and 800km in FT8 on 2m band with normal tropospheric propagation conditions.
I got my first amateur radio license about 40 years ago. My first call sign was Y63TI, followed by Y25KI before I finally got DL2AKT.
I am a proud member of the German amateur radio association DARC and its local X17 (Gotha) devision. Unfortunately, only about 50% of licensed amateurs are member of the club. Maybe, some guys do not understand that amateur radio bands, repeaters and other infrastructure are on risk if there is not strong club and active members who take care.
Amateur radio is offering so many different opportunities. It is impossible to do everything possible. Therefore my focus areas changed over time. In the 1980th I was very active on HF bands, DX and contesting and with my good old friend Harti, DL6AUI, I was doing RTTY as well with home made electronic equipment, i.e. no mechanical TTY but state machine with >60 TTL and CMOS logic IC. Remember, home computers were not yet available in the early 80th. This first ‘digital’ amateur radio experience triggered some other interests in the following decades.
Also, since the very beginning of my amateur radio ‘career’, already as SWL, I have been member of the most successful VHF/UHF/µWave contest team in Europe DLØGTH (former call signs Y37Q, Y59ZI, DM5TI and DM7TI). Still, I have fun with that great team and I am usually operating 23cm band at DLØGTH. The photo above shows the usual DLØGTH contest setup from 1296 MHz up to 24 GHz bands in JO5ØJP.
As mentioned, my digital modes interests did not stop with RTTY. I was an early user on Packet Radio and APRS including APRS via ISS. I also did amateur television (ATV) for some years.
For more then three decades, most of my activity was on 2m, in contests also on 70cm and 23cm. Since 2021 I have been more active again on shortwave bands. Outside of contests I also enjoy digital modes (FT8, FT4, MSK144 and more). I am also QRV in C4FM/Fusion/WIRES-X, DMR, DSTAR but prefer FM for chats with friends.
Amateur radio changed a lot in the decades I have been doing it. Even, I see some changes less positive, more critical, there are more positive changes and huge new opportunities, more than a single ham can do. So, I am looking forward to the future of ham radio and hope to continue to enjoy it many years to come.
My recent contacts:
DARC µWave Contest
The DKØNA team enjoyed sunny warm weather during last week’s contest which was dedicated to >1 GHz amateur radio bands. First time, we used 3 antenna systems on 23cm which …
Good VHF Tropo ConDX on June 1st
I lookedfor some Es openings but found very good tropo condx instead: 16 QSO’s >1000km ODX on 2m with EI3KD 1.342 km ODX on 70cm with G7RAU 1.159 km
New 144 Antenna
After 25 years of operations w/o any problem, the 144 MHz 9 element Yagi antenna had very poor SWR. Either the antenna feed system or the coax cable was defective. …
DLØGTH VHF/UHF/Microwave Contest Team dl0gth.de
DKØNA Clubstation and Contest Group dk0na.de
Webcam at Schneekopf in JO50JP schneekopf.panomax.com
IARU 1 VHF/UHF/SHF/Microwave Contest Results iaru.oevsv.at
Great Airplane Scatter Software from DL2ALF www.airscout.eu
German Amateur Radio Association www.darc.de
DARC VHF-,UHF,MW Contest Upload: https://dxhf2.darc.de/~ukwlog/upload.cgi?form=referat&lang=de
DX Conditions www.gooddx.net
DX Maps dxmaps.com
Troposheric Propagation Forecast tropo.f5len.org/forecasts-for-europe
Sporadic-E Propagation Forecast by G3YLA PropQuest
DL2AKT at pskreporter
ADS-B RX (DL2AKT feed into various networks):
Finally, the site where I spent even more time than with amateur radio, my QRL xfab.com