VK3NX
Australian Amateur Radio Station
24 GHz EME
EQUIPMENT ON 24 GHz EME

•        2.4 m  Solid dish  (Andrews)  

•        11.5 W Kuhne SSPA  (10 W at feed)  short  WR42  flexible W/G  to  
W/G Switch (~0.5dB loss)

•        Feed:  Super VE4MA  choke flange   with  Circular to  rectangular
transition (WR42)

•        W/G switch:  “EVENTS HORIZON”

•        LNA @ feed
Kuhne 1.5dB NF  27 db gain  +  DB6NT design (homebrew)  NF= Max
2.0dB  Gain =  11.5dB
Total  gain is 38.5dB in “feed box”

•        LMR240  with Radiall 18GHz connectors  for  short  run  on Tx  
and Rx  from “feed box” to  transverter

•        Transverter = Thales  26 GHz  units  running  1296 MHz  IF.   Then  
2nd down-conversion to  144MHz IF.   

•        Kuhne  24 GHz  W/G  filters  on  Rx and Tx  ports of Thales  unit.  
(Absolutely necessary due to very   poor image rejection ~4dB  only  
with 1296 MHz  IF)


Perfomance:

•        Best Moon noise measured at  2.2dB

At low path loss and low levels of libration my echoes are audible.
STATIONS WORKED ON 24 GHz EME
INITIAL
STATION
MODE
REPORTS
COMMENTS
1
OK1KIR
JT4
-15 / O
16/11/2013
  OK1KIR
CW
O / M
16/11/2013      1st VK-OK CW     1st VK- CW on 24GHz
Previous VK record for CW  EME  15,885.5 Km
2
G3WDG
JT4
-15 / -16
16/11/2013      1st VK-G   VK  Previous digital EME
Record     WORLD record EME    16,878.8 Km
3
W5LUA
JT4
-14  / -17
18/11/2013      14579.5 Km
4
JA1WQF
JT4
-14 / -17
7/12/2013   1st VK-JA
5
JA6CZD
CW
O / O
01/02/2014   1ST VK-JA CW
6
LX1DB
CW
O / O
27/04/2014  1st VK - LX  CW   
VK and WORLD EME CW RECORD  16,468.5 km
  W5LUA
CW
O / M
14/07/2014   1st   VK - W  CW  Contact
7
OK1CA
CW
O / O
05/10/2014
8
DF1OI
CW
O / M
10/10/2014   1st VK - DL CW Contact
9
JA4BLC
CW
O / M
24/10/2015   
  JA1WQF
CW
O / O
24/10/2015
         
Link to OK1KIR contact report  18/11/2013
Link to JA1WQF contact report  7/12/2013
Link to LX1DB contact report  27/04/2014
24GHz EME AUDIO recordings:
LX1DB APRIL 2014
LX1DB APRIL 2014
Link to W5LUA contact report 14/07/2014
W5LUA July 2014
W5LUA July 2014
W5LUA July 2014
Link to DF1OI contact report 10/10/2014
My echoes as received at low loss and low "spread"  in October 2014.
Not  very  strong  but they are there!