Local news and weather from Vierkirchen

(This is a rather old photo, but it has a historic background: it actually is the very first digital picture taken from me, in about winter 1987)

This is my RIG: (Nearly every equipment of my radio station is homemade)

Terrestrial:

On EME, I am only QRV in traditional modes and not in any digital. I still want do do the QSOs by myself and lot let it done by the computer. I know that sometimes I am loosing new squares, countries or even continents, but my own satisfaction is worth this. Anyway, I feel that some just digital made activation of a band could be done in CW, too. Maybe you think about this and give me a note.

For some time, I tracked my grid square standings, but I did not update these since many years. Those given here are outdated. While 50MHz and 144MHz became just consolidated since some missing QSL cards arrived, much more were added on 432MHz, 1296MHz, 2320MHZ and 3400MHz (last two not even yet displayed here) due to my contest and EME activities. 

Notes:

• Green squares are confirmed, red ones unconfirmed, blue squares are unconfirmed since more than 2 years.
• Not included are outside the map range worked EME or MS squares
• I am of course very interested in any skeds, especially with already not confirmed squares.
• You can click on the maps to see them in an expanded view
  

50 MHz  (08.07.1998) (Due to my previous QTH in the restricted area of TV transmitter "Gruenten" 6m is very limited for me. I had an experiemental licence during the first time when 50MHz was legal in DL, but did not renew it for the further time due to that. At my current QTH we are outside of this area, but I am QRV only for fun, not intensivly)

144 MHz  (29.11.1999)

432 MHz  (29.11.1999)

1296 MHz  (08.07.1998)

North America on 70cm EME  (29.11.1999)

JA on 70cm EME  (29.11.1999)

  "DXpedition" to Rosenheim, JN67bu

A special sample: My first signal on 13cm - Yet another way to do a QSO: DK2DB on 23cm (sorry, I lost the "DB"):
(click on the pictures to get them in high resolution)
Subtitle: What is good for VLF, is also good for SHF... or... who says CW must always be at 60 lpm?
And... Yes, my 13cm transverter's frequency is instable...

His initial signal (the first "man made" signal on 13cm I ever received)

"DK2" on slow speed: each dit is 3sec long

These are my current and older projects:

• PICADSB ADS-B Decoder based on a PIC 18F2550
• 
  
• The DL4MEA Power Meter
• FT847 test series
• FT847 external receiver input modification for 144MHz and 432MHz
• 23cm / 13cm Ring Feed good for dish antennas with f/D=0.4-0.5, and here with photos
• Elevation measuring using a Smarttool device
• A 70cm big wheel antenna  with description about building
• Feeding of yagi antennas for 2m, 70cm and higher
• Feeding a 6*33ele EME antenna system with parallel wire  (last updated 07.04.1999)
•  A very simple meteosat reception antenna (maybe yet not present, so watch for it)
• GS35b 144MHz kw-Amplifier including my Weinheim '98 script
• GS35b 432MHz kW-Amplifier description see in 144MHz amplifier description
• 432MHz 150W 10dB transistor amp using a TP3069 transistor (maybe yet not present, so watch for it)
• 300W 3-150MHz solid state PA with 14dB gain using a single MRF141g power FET transistor
• 2 x 2x2C39 1296MHz Power Amplifier and the description how it is built
• PA control unit, handles heater startup delay, grid and plate voltage supervision, sequencer for PA and preamp and more
• Triode bias circuit for large and small triodes with disable/enable
• RF switching unit for any kind of power amplifier / receive preamplifier (VOX)
• GI7b 1296MHz 500W-Amplifier
• 70cm FM PA 2Win/100Wout with MGF1302-Preamp for Packet Radio use, working with the RF switching unit and an easy PA control unit
• Fool save 4 channel transmit/receive sequencer with Push/Pull-Outputs
• LED bar with 10 leds, used at the 300W 3-150MHz solid state PA and the 70cm FM PA
• Moon tracking unit with a 80C535 (similar to that of OE5JFL)
• PCB for a LA8AK audio up-converter
• PCB for a DJ9BV Wattmeter (single sided 11x10cm, not these expensive switches, with a MAX632 charge controller)
• planned: Light wattmeter circuit, derived from the DJ9BV Wattmeter , offers forward and reverse power measurement including SWR calculation with peak sampling for one channel to be used in any power amplifier
• planned: RF clipper, easy and simple, including a relay to switch it off
• Roger-Beep (simple add-on, needs no wires to be cut: senses PTT line and adds its beep when PTT goes inactive)
• Description of my antennas for 144MHz (PDF), 432MHz, 1296MHz and 2320MHz (PDF)

(Note: The PDF files were taken from the DUBUS archive ftp://dpmc.unige.ch/pub/dubus)
• High voltage stabilsation using MOSFET transistors
• Conversion of a PCS Base Station Power Amplifier to a 13cm 50W amplifier
• Datasheet of HP's ATF35076 (GIF, 115k)

 

• Sources for the parts which I sometimes need for my projects

• OK1KIR 23cm PA with GI7b
• DL1VU 23cm 4*2C39 PA
• Modification of a TH327 or TH347 Plisch amplifier into a 23cm/1296MHz kW amplifier

Page 1 (GIF, 71kB), Page 2 (GIF, 66kB), Page 3 (GIF, 86kB)

Stations that I still am or have participated:

DB0ZKA-8: PR-Mailbox in Augsburg

For about 10 years I operated the Packet Radio Mailbox DB0KCP at my parents home. Then due to several facts I decided to shut it down locally and join it with my friend's digipeating system DB0ZKA in Augsburg, JN58ki. Today I am no longer maintaining it, since my interests have changed.

DB0FAI: High Power Experimental Beacon in Falkenberg/Langerringen

Together with Wilhelm, DL5MCG, I am operating the beacon DB0FAI in JN58ic.

My private address (no secret, because it is available through many databases, too):
Am Rain 24
D-85256 Vierkirchen

Email: [email protected]