X-Band activity on Sep 18, 2016

On Sunday morning, Sep. 18, 2016, the Radio-Amateur Club of TU Wien participated in the ÖVSV microwave activity contest and the first three contacts were made in the X-Band: with OE3WHU/p, OE4WOG/p, and OM3KII. We used just 250 mW of transmit power which were fed directly into a WR90 horn antenna with 16 dBi gain. Doing the math, this amounts to 10 dBW equivalent isotropic radiative power (EIRP). The experimental setup is shown below: two separate horns are used: one for RX and the other for TX. This way, we don’t need any RX/TX coax relay. The setup was erected on the satellite antenna platform at 5m above the institute’s roof. Antenna height roughly 37m above ground level.

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Prototype Setup for 3cm Band

OK, let’s give it a try on the 3cm band. The OE1XTU prototype setup consists of a YAESU FT-817ND QRP transceiver that is used to excite a Kuhne Electronic MKU 10 G3 432 Prof. 3 cm transverter (from 432 MHz to 10.368 GHz). Two separate horns are used for transmission and reception. No Tx/Rx coax relais in the feeds and we rely on the 16dBi gain of the horns alone: no dish for now. OE1XTU (Locator: JN88ee) goes on air on Sep. 18, 2016 for the OVSV microwave activity contest. 73 de Chris

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