VK3NX
Australian Amateur Radio Station
13cm EME

Equipment on 13cm

- A homebrew transverter based on the DEMI board is used for 2300-2304 MHz.

- The VK band is 2300-2302 MHz.  We also have a band at 2400-2450 MHz.  The
agreed segment for EME is 2301.900 - 2302.000 MHz.

- The LO is a homebrew design and is reflocked to a 10 MHz GPS derived  signal
using a "VE1ALQ" PLL.

- IF frequency is 144 MHz.  

-The amplifier in use is a Spectrian amplifier running at a "cool" 120 W

- LNA is a 'WD5AGO" preamp with 26 dB of gain and a claimed Noise Figure of
0.55dB.

-  Dish feed is a scaled version of the
"RA3AQ"  optimised septum feed.  I have
built it out of copper sheet (diam. 0.5mm)


Cross-Band Capability

-  The tunable IF is usually  an IC-746  or an IC7700 with 2m xvtr.  Both these radios  
tune to 174 MHz  with no noticeable / measureable difference in Rx sensitivity.  As
such  with the 1 transverter I can Rx on the different worldwide allocations at:
      2300 MHz
      2304 MHz
      2320 MHz

By using a switching arrangement in the Rx path,  my 2400 MHz "terrestrial"  
transverter can be used to listen to the 2424 MHz JA segment
Audio Clips from 13cm EME:
Link to my 13cm EME Log-Book
Sun Noise = 12.2 dB  with SFU = 70

Moon Noise = 0.35  @ Apogee

CS / Gnd = 5.7dB
VK3NX - ECHO
DL4MEA
OZ4MM
WD5AGO - 73'S
JA4BLC - CW
JA4BLC - SSB
Pictures of 2300 - 2424 feed assembly
RW1AW SSB  2008 ARRL