On this page you can see my equipment for 47 GHz
I started building equipment for this band
It existed of a crystal controlled narrow
band LO with 12 GHz output and a multiplier to 24 GHz, then a doubler using a
As antenna I used on both systems a 24 cm diameter dish with an open waveguide feed
On 8-3-1992 I made my first test over a
distance more than within my shack,
The story of this can be found at: first QSO on 47 GHz in PA (Dutch language)
Using this setup I also made the first ever QSO from PA to DL on 4-7-1992 with DC0DA/p
When I participated in the Danish Microwave activity week in 1994 and 1995 I became much more interested in 47 GHz and started building some new equipment with much better performance
From Michael DB6NT I received some PCB's to build my new system, based on harmonic mixers for RX and I build a 100 mW source on 24 GHz to double it to 47 GHz giving about 14 mW output on 47 GHz. For that time that was a lot of power. Switching from RX to TX was done using a waveguide 4 port switch.
Also I build a second transverter only a
harmonic mixer for RX and TX.
At this moment I am planning a new system based on modules from Kuhne Electronics and a waveguide switch from OE2JOM
At the end of January 2017 all modules have arrived and I have started building my new system
It should be giving about 0,8 Watt output and an overall noise figure below 6 dB
When it is ready it will look a bit like the system from OE2JOM
More experiments for this band to be done
Via Ebay I found this low noise pre-amp, could be usable for 47 GHz. Will need some testing.
Also for testing this Doubler-Mixer
For my NF measurements
And a PA for high output power (3 to 4 Watt) on 47 GHz
47 GHz x4 multiplier with 15 to 20 mW output