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DK3CW Germany flag Germany

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Wrkd DP0ISS (International Space Station) on Novemeber 8th, 2014:



Global Emergency Communication
Providing Global Emergency Communications during Disasters




Next SOTA Activity To be anounced... --> Track ascent and descent DK3CW-8 (by foot).

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Hello my name is Jakob. I am 21 years old and a ham radio operator since autumn 2007 (CEPT Novice licence). In December 2011 I passed the Advanced Licence (CEPT licence / HAREC). My previous callsign was DO3HPR. Actually my working conditions are a Yaesu FT-817ND with only 5 Watts QRP and FT-100. HF Antenna is a end-fed longwire antenna, which is about 40 metres long and 10 metres over the ground (141m ASL). The Location is near the inner city of Frankfurt on the river Main in Germany. Basically I am active with QRP and within portable activations (SOTA,IOTA,Lighthouse,WFF etc.) I am interested not only in the classical radiophony and telegraphy but also in qrp digital modes like WSPR (Weak Signal Propagation Reporter), JT65, JT9 or ROS. Mainly, I am working and testing digital EmComm operation via HF using WinLink 2000 Network with different Modes like WINMOR (Winlink Mail over Radio), PACTOR I-II, Automatic Link Establishment (MIL-STD-188-141 and MIL-STD-188-110) , APRS, Packet radio, D-STAR DV (via D-RATS, see below). Also testing other HF E-Mail Modes like jPSK or RFSM-2400/8000. Certainly I'm also interested in the more popular modes like (Q)BPSK31/62/125, RTTY (F2B), MT63, OLIVIA, CONTESTIA, OPERA etc.

Furthermore, I participate at SOTA (Summits on the Air), GMA (German Mountain Award) and WFF (World Flora and Fauna) also with my FT-817 on German and Austrian mountains and nature park areas. Later on, I will pass the CW additional test to work in CW mode in nonforeign holiday QTHs, which need this additional certification. In addition I'm interested in Digital VHF/UHF Modes like Packet Radio (1k2 and 9k6) and D-STAR. Specially on D-STAR and packet radio, I use the programm D-RATS. Its a data communication tool based on the D-RATS Digital Voice (DV) protocol and ARQ-protocol which offers low speed data transfer. Since 2010, it became my passion to work in SSB and Digital Contests on Shortwave (e.g. Fielday, CQWWDX, WAG, WAE, Ukrainian DX contest, Educational contest, SARTG, PACC, UBA, QSO Party, XMAS, DARC 10m Contest, ARRL 10m Contest ...), but also in a few VHF / UHF contests. Seldom, I participate on foxhunting activities. This is why, I am a member of the ARDF unit of the DARC district Hessen. Also I was responsible for emergency communications at my local club (Emergency Communication Representative).

Since 2013, I am programming ham radio scripts in variouse programming languages for amateur radio purposes as well as using and collaborating in building the 2.4 GHz / 5.8 GHz european HAMNET as a quite modern field of amateur radio.

Club Calls, under which I was active (mostly in contests):

  • DP6T Contest Group Wittgenborn (WAG contest, CQWWDX contest, ARRL 10m Contest, IARU HF, CQ WPX, DARC 10m ...)
  • DK0CW (SSB IARU Region 1 Fieldday)
  • DL0FM (UHF Contest)
  • DB0FJG (VHF contests)
  • DK0FX (Hessencontest shortwave)
  • DL0HG DL0HES and DL0F (Hessenday 2011)
  • DL0FFM (in occasion of the 65. anniversary of my club)

Membership numbers:

  • EPC (European PSK Club) # 17791
  • DMC (Digital Modes Club) # 05242

Also member of:

Furthermore I´m interested in natural sciences, especially astrophysics and botanic but also in the humanities muchly philosophy. Some of my freetime activities are hiking (in combination with SOTA and GMA), climbing, Wing Tsun-Kung Fu, programming, Wikipedia -author (e.g. ham radio articles), playing the calssical guitar...

Transmitting modes: SSB (J3E), PACTOR I-III, (Q)PSK31/63/125, RTTY (F2B), WSPR, WINMOR, Automatic Link Establishment, JT65, JT-9, ROS, OPERA, OLIVIA, CONTESTIA, MT63, PACKET RADIO (1k2,9k6), RFSM-2400/8000, FM (F3E), D-STAR (Digital Voice), APCO P25, TETRA, DMR

Working conditions & Equipment:

QRP-Transceiver: YAESU FT-817ND | Filter (CW, digital modes): Collins YF-122C 500 kHz

HF-Transceiver (fixed and bicycle mobile operation): FT-100

Max. Output: 5 Watts | Tuner: MFJ-16010 (manual) and MFJ-928 (automatic)| Antenna (Shortwave): end-fed longwire antenna (~40m)

PACTOR-II Controller with PACTOR III Licence

Antenna (2m / 70cm / 23cm): DIAMOND X-6000, Omnidirectional antenna vertical

Antenna (70cm): HB9CV (Ochsenkopfantenne)

Mobile antenna (2m / 70 cm): DIAMOND MR-177 | Portable antenna (HF): MK-2 ATX-1080

Analog HT: YAESU VX 8-E (GPS + APRS + Echolink)



DMR HT: Motorola DP3600 / XPR6550

TETRA HT: Motorola MTP-850S


My logbook, QSO Maps and where I ´m still QRV


EmComm Exercice EDFB DK3CW & DL1ZAV via HamNet 2,3GHz

EmComm Fieldday Exercice EDFB. Right: Rudolf, DL1ZAV. Left: DK3CW. QRV HF and HAMNET 2,4GHz



HAMNET 2,4 GHz Mobile Phone PABX & UHF Motorola Analog F3E / Digital D-STAR and APCO P25 RPTR

HAMNET 2,4 GHz Mobile Sip-Phone PABX - User LIST

Mobile HAMNET WinLink RMS-Relay - Telnet/POP/SMTP SERVER & SIP PABX Client / TeamTalk 4 Voice & Video

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Interesting links

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6569124 Last modified: 2015-07-16 22:10:02, 19105 bytes

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QRZ Logbook Summary for - DK3CW
Latest Contacts for DK3CW at QRZ.com
dedateband mode grid Country op
KC2PED 2013-05-09 70cm DSTAR FN30as United States Charlie Ridgway
KC2PED 2013-05-09 70cm DSTAR FN30as United States Charlie Ridgway
KC2PED 2013-05-09 70cm DSTAR FN30as United States Charlie Ridgway
DL2MRK 2013-05-04 2m SSB JO40im Germany Manfred
W3BI 2013-04-12 40m JT65A FN20en United States Richard C Johnson
DG8OAW 2013-03-29 80m SSB JO42oe Germany Rainer Ullrich
NP4IA 2013-03-29 2m DSTAR FK78df Puerto Rico Paul G Preston
ZL1ICU 2013-03-23 2mm DSTAR RE78kp New Zealand Laurence Mathews
G0MGM 2013-02-25 30m JT9 IO91pn England Rob
EA3AYQ 2013-02-21 20m RTTY JN11ms Spain Joaquim Pazo
PD1RON 2013-02-10 40m SSB JO30av Netherlands Ron Kunkels
PA7FRN 2013-02-10 40m SSB JO21jo Netherlands Edwin -
PD7BZ 2013-02-10 40m SSB JO32iu Netherlands Bernard Zuidema
PA3EYP 2013-02-10 40m SSB JO22ga Netherlands COR GEST

Book Totals: 70 qso's   70 confirmed Get a free logbook at QRZ.COM

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