3.4 GHz EME
located 51 14'53.1N 1 34'15.6W Maidenhead Locator IO91FF
The 3.7m Antenna had been used in the development of satellite TV systems.
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| The Focus Box replaces the cassegrain sub reflector to support feed systems for the bands below 10Ghz | For 3.4GHz the transverter, Power Amplifier, Pre amplifier and feed are housed in the Focus Box | The system was fitted and first echoes heard on August 5th 2005 with the help of G8ACE and SM7/M0FWZ |
Listen to Echoes from the moon on 3.4GHz
Spectran Image of Echoes on 3.4GHz 5th August 2005
Listen to W5LUA during my first 9cm QSO on 8th August 2005
After working W5LUA and LX1DB using a linear polarised VE4MA type feed experiments were conducted with a septum feed to provide circular polarisation.
Before fitting the choke ring sun noise was down to 10dB compared to the 13dB from the VE4MA linear feed. The dish f/D is 0.43. With the choke ring fitted but without spending any time optimising it Sun noise was 11.5dB down by about 1.5dB compared to the VE4MA feed, there was no noticable reduction in the strength of the echoes. See spectran image below.
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