last revision: 28 July 2009
- July 2009 : The Sporadic E Season was successful so far
with working a number of new countries on 6m and my ODX on
144MHz with EA8AVI on the Canary Islands with almost 3600km in
a 2-hop Es contact. I have installed a weblog or blog for my
"activities" which can be accessed here: http://www.df9cy.de/serendipity
- April 2009 : After long and severe illness I became active
again. I had to do a number of repairs to the antenna
- until December 2008 : I made a number of EME contacts on
144 MHz (reached 80 stations now). The antenna is working
- May 2008 : First time in a VHF/UHF contest (3./4. May)
with the new antenna system. Also worked FSK441 Meteorscatter
again after a long time. Finally on 17 May I got the new
antenna system working with a big antenna on 6m and vertical
rotator added on 2m.
- April 2008 : Experimenting with the digital mode MEPT_JT
of the WSPR software by K1JT. Some sort of fun ... New
antennas for 70cm built.
- March 2008 : QRV again ! All antennas are up and working.
There are some minor problems, but they will be solved soon
- February 2008 : ARRL DX CW contest with 53 QSOs. Now the
40m dipole will be taken down and the new VHF system will go
up on to the tower.
- November 2007 : 180 QSOs in CQWW DX CW contest on
40m with 6 hours being QRV. All the antennas for 6m,
2m and 70cm are ready, but I will put them up next
year in early spring. Until then I will be on 40m
only, because after the VHF antennas are mounted, the
40m antenna will be up significantly lower.
- October 2007 : I fixed all mounting hardware of
the tower. I built a new monoband dipole antenna for
40m which works very well now.
- September 2007 : Things went slow - now the new
tower IS up. I put a 40m antenna over the top. It is
not working very well.
- May 2007 : The new Softrock v6.1 40m/80m software
defined radio transceiver is working. A fine
- April 2007 : Put up an 'emergency' antenna (4ele
at 7.5m)for 6m - which gave me many DX contacts also
to the U.S.A. and Carribean over the summer
- November 2006: QRV again with a small indoor
antenna on 80m. New Tower arrived !
- October 2006: New Keyer built which replaces my
27 years old one and SOFTROCK 6.1 a Software defined
Radio is working fine.
- September 2006: All antennas are down - Tower is
- August 2006: Already made many more QSOs than in
the years before.
- July 2006: put up a vertical for 40m ...
- April 2006: worked Station #60 on 144 MHz
- I installed a NOAA 137 MHz Weather satellite
system which works fine.
- The vertical rotator is up and improved the
- The EME 2004 contest from DL0SHF was very
successful: 5th place !
- March 2005: One year of 144 MHz QRP EME !
- January 2005: worked Station #20 with my 9 ele
- EME Contest Fall 2004 from DL0SHF
- 21 March 2004: First 144 MHz EME contact random
with I2FAK (JT65B Mode)
- 14 March 2004: Changed antennas and have the
DK7ZB 9 Element for 144 MHz up.
- 17 February 2004: Antennas are down.
- December 2003: First successful WSJT (FSK441)
Contacts on 144 MHz with only 45W.
- October/November 2003: EME Contest on 2.3 GHz and
10 GHz at DL0SHF after long time of absence from
- August 2003: Design of DRM demonstration
- July 2003: Starting experimental DRM reception on
AM radio bands
- July 2003: First time checked 144 MHz in
- June 2003: After 10 years back on 2m and copied
strong 144 MHz Es signals.
- May 2003: Antennas are up and working fine for 50
MHz and 144 MHz.
- May 2003: I have a transceiver for 144/432MHz
- April 2003: Antennas down for telescopic tower
- Slow activity only on 28 and 50 MHz because of
heavy work load and two children - yes :-)
Radio - active 2000
- 19 June : DXCC Country no 100
worked on the Magic Band.
- 18 June : Celebrate 25 years of
- April : Things return to normal
and I can be active again from time to time.
- January 2000 : Activity must calm down due
to number of problems to be solved.
Radio - active 1999
- 1999 : High Activity on 28 and 50 MHz ...
8 Antennas for 432 MHz Moonbounce are ready !
- 1 December 1999: Loss of the computer log
of 1999 including the backup. 95% could be
- 30./31. October 1999 : CQWW SSB Contest -
325 QSOs on 28 MHz
- 20./21. February 1999 : ARRL CW Contest on
28 MHz (part time only with 200 QSOs)
- 10. January 1999 : 2 hour DARC 10m Contest
: 50 QSOs in 2*CW
Radio - active 1998
- 12/13 December 1998 : ARRL 10m
CW : 116 QSOs on 28 MHz with the 3 element in a 2
- 28/29 November 1998 : CQWW CW :
848 QSOs on 28 MHz with the 8 element with 106
countries and over 268000 pts.
- 9 November 1998 : First contacts
with my new antenna at home on 28 and 50 MHz
- 25 October 1998 : 4 Hours in
CQWW give 175 QSOs in 64 countries on 28 MHz
- 24 October 1998 : INTERRADIO HAM
Meeting in Hannover.
- 7 August 1998 : The Big new
antenna for 28 MHz is up.
- 7./8. March 1998 : 153 QSOs on 144 MHz
giving 41000 pts.
- 14. February 1998 : GHz Convention in
Radio - active 1997
- 29.30.. November 1997 : 165 QSOs with a
simple wire in CQWW CW contest.
- 15./16. November 1997 : 2nd Leg ARRL EME
contest with 8 more contacts.
- 1./2. November 1997 : Marconi Memorial 144
MHz CW Contest with 72299 points
- 28. October 1997 : QRV again in the new
home on shortwave.
- 19. October 1997 : First 13 EME QSOs on
144 MHz in EME ARRL Contest.
- September and October : Rebuilding the
- 5. August 1997 : 144 MHz Nordic Activity
Contest with 80 contacts.
- 5./6. July 1997 : 144 MHz contest with the
new Contest PA. Made 57777 Points
- April 1997 : Closing down my station in
Krusendorf because of moving.
- April 1997 : Article on 4 over 4 element
for 50 MHz appears in FUNKAMATEUR
- 1./2. March 1997 : 144 MHz contest.
Position 33 of 284 entries
- 15. February 1997 : GHZ convention in
- Transverter project following DJ8ES for
144 MHz - on the way.
73 de Christoph DF9CY
Some highlights out of 30 years of amateur
first licensed as DB5YD
first homemade 2m FM transceiver
2m SSB Meteorscatter
general licence DF9CY
pioneer 144 MHz single yagi moonbounce contacts
432 MHz moonbounce with all homemade station
On all amateur bands from 160m to 3cm
move from home JO41DV to Bielefeld JO42FA
VHF DX-pedition to Helgoland island
Building and operating the UHF and SHF beacon
move to Krusendorf at the Baltic Sea near Kiel after
finishing university, QRV from JO54AL
pioneer 432 MHz single yagi moonbounce contacts
50 MHz special licence, WAC on 50 MHz
sucessful 432 MHz EME station with 4*24 element
See the complete log
EME conference in Goeteborg, Sweden
starting moonbounce operation at DL0SHF
constructing a "heavy duty" VHF station for contests
on a farm in JO54AL
leading the 50 MHz toplist in reknown "Funkamateur"
EME conference in Baltimore, U.S.A.
very successful 5th place in ARRL EME contest with
DL0SHF on 1296 MHz
move to new home in Schwedeneck, JO54AL
QRV via EME on 144 MHz and 432 MHz again from the