Summer works 2017

Usually I spent part of my August holidays to do some work that can’t be done during the working days. In the latest months I prepared some parts to be installed on the rooftop. This year has been focused to 23 and 3cm bands.
Stuff list:

The GPSDO has been placed near the antennas and supplied 24/24/365 with POE shared with a WiFi Access Point. It provides the reference signal for the 9936 MHz oscillator and for the ADF4153 inside the LZ5HB’s transverter.

10G

With Pino IK0SMG we measured the DF9NP’s oscillator that works well and has a good phase noise.

Then we measured the 10G power amplifier and after some work the maximum gain of 8+ dB has been centered to 10.368 MHz. My driving power is little more than 30 dBm, the resulting power to the feed is now 37 dBm.

1296M

The 23cm amplifier uses a MRF186 device that has a gain of 11 dB @ 960 MHz, when used at 1300 MHz the gain drops around 9-10 dB. The RF power of the transverter is 2 Watts, so the power in antenna is something less than 20 Watts. Not so much but it’s better than before. The transverter, the amplifier and the RX filter (necessary) have been placed in an aluminum box on the mast near the antenna.

20170821_114708

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