Updated last: November 23rd 2014, 10:17 am UTC
Hi, my name is Andy. Thanks for stopping by and thanks again for the QSO!
I am licensed since the end of the 70s and work mostly on 20m, 17m and 15m in SSB (love DXing) but also chatting a lot locally on 40 and 80 - I am NOT operating any contests and do NOT collect any QSLs - also not of any rare countries or islands. Again, a nice Q4 or Q5 conversation is all what counts to me - no matter if you are from Berlin, Kathmandu, San Francisco, Christchurch ZL or from Guam, Nauru or Tuvalu Island. You are welcome as long as it's not only "59 - good bye"!
My favorite DX-spots are below 14.200 KHz (Extra class segment) or 18.160 KHz (+/- QRM). Our 80m-chat room is 3.653 KHz.
Since early 2012 I also hold an US extra class "W6EAT". Whenever I'm back in the US I am also pretty active on 20m but also via D-Star (US-Trust, Reflectors 6C, 9C, 10C, 12A, 14C, 30C and during Hamvention on 38C)
HF is by far my #1 activity and playground even when I´m also doing soem VHF/UHF D-Star (mobile and portable).
We recently built our own D-Star Network in our county "Schleswig-Holstein" over the last 2 years - today 17 repeaters work permanently in our net (and several more of others)......I am owning 8 repeaters on 2m and 70cm today, hosted at 4 different locations: At my qth "DB0EAT", in Laboe near our capitol Kiel "DB0DMB", near Heide "DM0HEI" and in Timmendorfer Strand "DB0MAR-B". In parallel I am SysOp of 16 repeaters in our county.
Over the last 2 years I built several more repeaters for other locations and friends. If you are interested in some more detailed information please visit www.qrz.com/db/DB0EAT
Here are some pictures of my place, for some of us better known as "Radio Ellerhoop" :-)
My pretty compact Optibeam OB 9-5 does most of the jobs. It found it's home on my 70 foot (20m) motorized self-supporting crank-up - since more than 10 years now. This beam replaced a KLM KT34-A and a Fritzel FB-53. I'm still very satisfied with its performance and ruggedness. There are no moving elements, no traps, no coils, no compromises and it handles any higher power with ease! In addition it has ideal spacing on each band and since its full size it has maximum possible bandwidth - band by band....all in all, not too bad!
The only downside: It is an antenna made and optimized for our HAM-bands and it is only working there. It handles 5 bands but nothing in between, like SteppIRs do. But those have fixed element spacing and have lots of moving parts...they need maintanance and show weak front/back performance on the high bands.
Anyway, in our real world the the take-off location, the height of the beam and certainly the ground conditions are what finally count - the brand and the technology are second!
My Playground ... and a couple more pictures for those of you who are interested:
HF: Icom: IC-7700, several IC-706MKIIGs, Yaesu: FT-857D, FT-817ND, Kenwood: TS-870S, Perseus SDR, several Powermasters and LDG tuners
HF Antennas: 80/40m horizontal loop, additional 40m vertical quad in winter, Optibeam OB 9-5 (9 element / 5 band full size) on 20m, 70 foot crank-up tower
PAs: 2 x KSG 1300 (40 x BLW95), LV6 (GU43b), 8 x MRF157-PA (under construction), Ameritron ALS-500MX, 2 x 200W 2m Mirage, 120W 70cm Mirage
D-Star: Some ID-5100s, some ID-880s, IC-80, ID-51, Blue DV Dongle, Red DVAP Dongle, DV-RPTR V2, RaspBerry Pi-Hotspot
VHF / UHF / SHF (FM): TM-741, FT-8900. some FT-7900s, TH-79, Wouxun KG-UV2D, Alinco EC-10
VHF / UHF / SHF Antennas:
Yagis horizontal: 2m FlexaYagi FX-224
Yagis vertical: 2m FlexaYagi FX-205V - 70cm 2 x FlexaYagi FX-7015 stack - 23cm FlexaYagi FX-2304V
Verticals: 2m / 70cm Procom CXL 2/70 C - 2m Procom CXL 2/3 Cl - 70cm Procom CXL 70/5 Cl
D-Star Repeaters: SysOp of 16 repeaters in North Germany - Owner of 7 D-Star repeaters at 4 different locations: DB0EAT-B, DB0EAT-C, DB0DMB-B, DB0DMB-C, DB0MAR-B, DM0HEI-B and DM0HEI-C
EchoLink Repeater: DB0EAT-L
Repeater antennas (all commercial): Ellerhoop: Procom CXL 2/3 Cl, CXL 70/5 Cl - Laboe: Procom CXL 2/70 C - Timmendorf: Procom CXL 70/5 Cl - Heide: Kathrein 3dBd
My most important toys - still the antennas:
The Optibeam OB 9-5, the loops and several VHF/UHF/SHF-antennas:
The Repeater antennas of my repeaters DB0EAT-B, DB0EAT-C and DB0EAT-L are now on a new stainless steel construction on top:
The "DL6EAT 80m / 40m Dual Band Loop" - horizontally mounted, feed point is >60 foot (18m). This antenna is my standard antenna for 40m and 80m. It performs pretty well for QSOs within Europe - not really good for DXing. Special on this design are not only some space savings but also having the rf current-maxs parallel to each other. This delivers some extra gain and low VSWR within both Ham-bands. This antenna got optimized by EZ-Nec Pro, is coax-driven and has a 1:1,4 high power home brew balun on top of the tower at it's feed point. The 2:1-bandwidth on 80m is roughly 150 KHz and on 40m about 300 KHz - so no tuning necessary. All my amps are fine working at full power @ VSWR 3:1 (25% reflection) anyway.
This is my vertical 40m loop for DXing. Radiation angle is just 22 degrees - feed point is lambda/4 (10,45m) from the top:
The IC-7700 - still a wonderful top performing DX hunter after many years in service. I bought it when it came out first right after Hamvention in 2007. I am using this radio with external optional switchable pre-amp of DX Engineering RPA-1. This helps a lot while working very weak signals - a friend and real DXer (he is one of the big guns in the US) gave me that valued input.
Two of my other little gadgets...to be honest, I still enjoy playing with both of them: The pretty basic IC706MKIIG on right with PS and LDG tuner underneath and my vanity radio TS-870 on left, equipped with latest Inrad-filters in 2nd and 3rd IF. Array Solution's Power Master (on top of the TS-870) monitors any HF-power regardless what antenna is currently in use. The Perseus-SDR on top of the 706 works great with the software "Studio 1" - shown on separate screen shot below:
"Studio 1" Software for Perseus - here a screen shot taken on 40m during day-hours.....not much QRM right now. With this S/W any HAM band can be either monitored (in any bandwidth or mode) or even recorded - maximum bandwidth is 1,8 MHz. Yes, you can record a full HAM band and listen to all stations later - even change their mode or frequency while listening! So you could record the WWCQDX-Contest on let's say 20m and analyze it later - station by station. Have you done such crazy things before? Pretty magic......but this needs lots of disk space!
My RF-Lab in the basement:
The Amplifier Room in our basement - no fan-noise or heat in my shack upstairs any longer....
On right of the picture you see 2 x KSG1300 cabinets; two commercial solid state amps also capable running in parallel. Both are equipped with 5 professional rectifiers each and could produce up to 4 KWout with 100% duty cycle in total. The purpose is a clean low IMD signal and only 5 Watt of drive power from upstairs - very handy as there is no heat and noise in my shack any longer. The picture was taken while both doors of both cabinets were open. Both run on 3 phase 400V~ mains.
On left you see the legendary Russian LV6, a GU43b 2KW @ 100% duty cycle tube amp with home brew 3-phase 400V~ power supply underneath. This amp has 50 dB gain and delivers full output @ 20mW in......yes, 20 milliwatt! On bottom, underneath the P/S on the floor there is a prototype of a dual MRF157-Amp with build-in LDG AT-1000 Pro tuner. This is designed for 1 KW max.
My little mechanical workshop in our basement:
One of my current projects - My new HF-amplifier based on 8 MOS-FETs (MRF157).....The picture shows one of 4 modules - delivering pretty amazing IMD-values @800W - 1000W each:
A closer look at the 2 MOS FETs of one module:
Certainly Hamradio is not my only hobby - there are a couple more....unfortunately my time is limited :-)
One other is riding my BMW K1200RS - here with Dirk, DL4BAM (on right). Picture taken during our last tour 2013 in Dorumersiel:
And here is our final trip in 2014 on October 4th: After visiting Jens, DK8MIL and Reinhard, DL6BC we moved on to the North Sea coast...
Dirk, DL4BAM (on left) and Chris, DL6CL (on right) in Wilhemshaven.......Banana-Boat Ice-Cream at its finest!
Ready to start our trip back home - what a great day in Schlicktown-City!
Dirk, DL4BAM (on left) - Christian, DL6CL (middle) - Andreas, DL6EAT (on right)
Heading back home - here on ferry Blexen-Bremerhaven crossing the Weser river...
Hope to meet you on HF (in SSB) or on VHF/UHF (in D-Star on US-Trust REF006C) - or in person during one of the bigger HAM-fests like Hamvention in Dayton, HamRadio in Friedrichshafen or Interradio in Hannover! I most-likely attend the big 3...
Again - thank you for stopping by.
DL6EAT - W6EAT
1465120 Last modified: 2014-11-23 10:48:50, 18942 bytes
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