DK5YA - JN49nx - 4x9 M-square

Who is DK5YA?


I'm a VHF-enthusiast since 1964. At the age of 6 I was seriously searching for the miracles of broadcast inside my parents brand new HiFi system using a screwdriver and the big solder gun I found at my fathers shack desk. Nice surprise for whole family: neither small green guys from Mars inside the radio nor sound out of the speaker anymore...

In 1980 I got my first license, DG4NAE, a new solder and few screwdrivers also...of course. In 1983 I became DH8NAA. Since 15. May 1998 I am DK5YA. In August 2006 we went to a new QTH, still in JN49nx right on the border to JO40na, out of the town on the countryside. Now I'm at 400 meters a.s.l. with a clear view and a superb take-off all around.
To see a panoramic 360 deg. view of my new QTH and take-off click here.

Radio is my business, I'm a Broadcast-Journalist at Hessischer Rundfunk in Frankfurt/M., part of the Broadcast Net ARD [Radio and TV] in Germany. I'm also member of DF0HR, Hessischer Rundfunk Clubstation.

Recent rig [summer 2016]:
ELECRAFT K3 with DB6NT transverters and homebrew adaptive dual RX system for 144 and 432, 144 MHz LDMOS SSPA 432 MHz PA with TH338
ELECRAFT K3 for HF, homebrew LDMOS amp with BLF188XR
ICOM IC275H for IF on 10 GHz with DB6NT transverter plus PA@10 Watt (QRT)
YAESU FT817 with HA1YA transverter for 70 MHz
Several spare VHF/UHF rigs
All LNA's by DB6NT or HA8ET
Antennas are
5 el. Yagi I0JXX on 50 MHz
6 el. Yagi DK7ZB on 70 MHz
4 times 22 el. X-Pol yagis for 144 EME MHz by M². Adaptive RX and continous circular TX. See the scheme here.
25 el. I0JXX on 432 MHz
1.8 meter mesh dish on 1296 MHz (not in the air at present)
90cm dish for 10 GHz (QRT)
45 cm dish on 24 GHz (not in the air at present)

Wires and verticals for shortwave
Two times Flammex Pull 12 mtr. towers made by Frick.

4 times 9 element M² 4 times 9 element M²
Old 4 times 9 el. Mē @ 12 mtrs. from 1998 until 2014 Old 4 times 9 el. M² @ 12 mtrs. from 1998 until 2014 Old 4 times 9 el. M² @ 12 mtrs. from 1998 until 2014 pointing east
Click images below to enlarge!
4 times 18 el. XPol by DF7KF @ 12 mtrs. from April 2014 , sold 2016 New 4 times 22 el. XPol by M² @ 12 mtrs. from September 2016 New 4 times 22 el. XPol by M² @ 12 mtrs. from September 2016
LDMOS 144 MHz SSPA SV9/DK5YA June 1998
144 PA with 4x MRFE6VP61K25H LDMOS SV9/DK5YA June 1998 10 GHz transverter boxed [enlarge]
Front: 50/432/10GHz/ Rear: old 144 MHz 10 GHz dish/50 MHz 5el./432 MHz 25el. Both towers@12 mtrs. high (2008)
Left 144 MHz, right 50/432/10 GHz
in 2008
Antennas beaming north (2008) Tower #1 erected 2006/Tower #2 in 2008
Shack summer 2011 Shack detail - digital section 2011 10 GHz dish new in 2011 - now QRT