76 GHz info below
On 25-8-2024 the first ever CW QSO on 47 GHz EME was made
At 08.05 UTC the first ever CW QSO between RW3BP and DL7YC succeeded with report 529 and 539
System in use
| RW3BP | 2.4 mtr offset dish | nF = 1.2 dB | 30 Watt from a home made sspa |
| DL7YC | 2.4 mtr 0.4 prime focus dish | nF = 1.3 dB | 42 Watt from a TWT |
System at RW3BP
| The Dish at RW3BP | Dual Feed switching between TX and
RX and pre amp by RW3BP |
Feed with SSPA with water cooling |
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| The Dish at DL7YC, using EGIS gearbox | Feed and feedbox with TWT in front of dish |
Feedbox, dish aimed at the sun, |
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TWT power supply in waterproof kissen box
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On 22
April 2026 the worlds first ever 76 GHz EME QSO took place between RW3BP (KO85)
and DL7YC (JO62).
Congratulations Sergei and Manfred
Sergei, RW3BP, utilized a 2.4 mtr offset dish paired with a 8.2 Watt SSPA and a 2.4 dB NF LNA, Manfred, DL7YC, employed a 2.4 mtr prime focus dish with a 5 Watt SSPA and a 2.5 dB nF LNA.
The QSO was made using WSJT Q65-60E
during which "single decode" reports of -14/-15 and -17 respectively were
exchanged.
A unique feature of this operation was that, due to the high losses at 76 GHz,
no antenna relays were utilized, instead the receivers and transmitters each
employed separate feedhorns that were slid into the focal point with an accuracy
of 0,05mm.
