Australian Amateur Radio Station
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
- Dish feed is a scaled version of the "RA3AQ" optimised septum feed. I have
built it out of copper sheet (diam. 0.5mm)
- 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:
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:
|Sun Noise = 12.2 dB with SFU = 70
Moon Noise = 0.35 @ Apogee
CS / Gnd = 5.7dB
|VK3NX - ECHO
|WD5AGO - 73'S
|JA4BLC - CW
|JA4BLC - SSB
|RW1AW SSB 2008 ARRL