VK3NX
Australian Amateur Radio Station
( VHF - UHF - SHF & UP  Page)
Operation on VHF and Above
My main interest in Amateur Radio is weak signal work on the bands above 30 MHz.  Operating from home or
"Hill-topping" on the Microwave bands provides a wonderful incentive for building gear.  

In Summer the VHF and above bands "come alive" with "tropospheric" propogation.  But they also come alive
at other times such as during "Auroral" openings and during "Meteor Showers".

There are many different modes of propogation above 30 MHz and they each provide a challenge and a
rewarding experience in this wonderful hobby of ours.


EQUIPMENT ON THE HIGHER BANDS:

Presently I operate from home on all bands from 50MHz - 1296 MHz for terrestrial work and
on EME, I am QRV from 144MHz  through to 10 GHz.
During the "troppo season" I can go portable with all bands to 47 GHz.

50 MHz

5 element DK7ZB antenna
BFR981 Preamp



144 MHz

8 element DJ9BV optimised yagi  
BFR981 Preamp
Modified AM17 Amp  400W PEP
Transverter (28 MHz IF)




432 MHz

4 @ 26 element BVOs
MGF1302 Preamp
GS35b Amp  400 W PEP
MRF646 Amp 250 W PEP
Transverter (28 MHz IF)




1296 MHz

74 element DL6WU
MGF1302 Preamp
MRF286 @ 8 amplifier 400W
Transverter (144 MHz IF)




2400 MHz

1.2m or 60cm dish
Cavity Dipole feed ( VK2AES)
LNA
60 W amp
Transverter 144 MHz IF

3400 MHz

1.2m or 60cm dish
Tri-Band Dish feed
LNA
50 W or 100 W Amp
Transverter (144 MHz IF)




5760 MHz

1.2m or 60cm dish
VE4MA Feed
LNA
25 W  & 100W Amps
Transverter (144MHz IF)




10368 MHz

1.2m or 60cm dish
VE4MA Feed
LNA
8 W  Amp
Transverter (144MHz IF)



24048 MHz

SYSTEM 1:
30cm dish
Penny Feed
LNA
W/G system
600mW
Transverter (144 MHz IF)

SYSTEM 2:
Thales unit  1W output
Portable operations are the norm for
summer DX on the Microwave Bands!

Link to "Field Day" activities!
Oct 2009
23cm 74 ele DL6WU
70cm  4 @ 26ele  BVOs
2m  8 ele
47088 MHz

25dB Horn
Kuhne Mixer
G8ACE OCXO
DB6NT Multiplier
Transverter (144 MHz IF)

LINK to 47 GHz
PAGE

LINK to 24 GHz
PAGE
Microwave Marker
Generator Based  
on the VK3XDK
Synthesiser
Link to my "Portable 144MHz UHF_SDR + SDR2GO Combo"

A replacement for commercial portable 144 MHz transceivers?