| VK3NX Australian Amateur Radio Station |
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Equipment on 3cm
- A homebrew transveter based on the DEMI board is used
for the 10 GHz transverter. The transverter is used as my
"terrestrial" transverter and incorporates a homebrew 3W
amp and the DEMI 8 W amplifier. There is provision for a
low level (+10dBm ) output on the rear panel which when
selected disengages the internal PA's. This low level RF is
used to drive the EME TWTA.
- The TWTA is an NEC which produces 100 W RF on
10368MHz and with the associated piece of LMR600 I am
getting about 75-80W at the feed of the 3.7m dish.
-The LO is a homebrew design utilising the circuit in the
"ARRL Microwave handbook" as the basis and is locked to
a GPS derived 10 MHz signal with a "VE1ALQ" PLL board.
-LNA is a DB6NT preamp. Measured NF is 0.7dB and the
gain is 26dB
- A W/G switch is used with a simple feed horn utilising a
single "VE4MA" style choke flange. 1 W/G to SMA
transition exists on the input to the preamp.
- IF frequency is 144 MHz.
- A homebrew transveter based on the DEMI board is used
for the 10 GHz transverter. The transverter is used as my
"terrestrial" transverter and incorporates a homebrew 3W
amp and the DEMI 8 W amplifier. There is provision for a
low level (+10dBm ) output on the rear panel which when
selected disengages the internal PA's. This low level RF is
used to drive the EME TWTA.
- The TWTA is an NEC which produces 100 W RF on
10368MHz and with the associated piece of LMR600 I am
getting about 75-80W at the feed of the 3.7m dish.
-The LO is a homebrew design utilising the circuit in the
"ARRL Microwave handbook" as the basis and is locked to
a GPS derived 10 MHz signal with a "VE1ALQ" PLL board.
-LNA is a DB6NT preamp. Measured NF is 0.7dB and the
gain is 26dB
- A W/G switch is used with a simple feed horn utilising a
single "VE4MA" style choke flange. 1 W/G to SMA
transition exists on the input to the preamp.
- IF frequency is 144 MHz.
| 3cm EME |
| Sun Noise = 12.7 dB (SFU = 68) Moon Noise = 1.4dB CS / Gnd = 3.6 |
| Audio Clips of 3cm EME: |
| RW1AW |
| Stations worked on 3cm: |
| All contacts via CW unless otherwise noted. |
|
| Recordings taken at JA1WQF... on 2.4m dish (Thanks Kasai) |
VK3NX received at JA1WQF
| OK1KIR - VK3NX QSO |