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среда, 29 августа 2018 г.

Chasing satellites. Part 2 - listening on Icom

This evening I used the mobile Icom IC-F211 for listening to the satellite for the very first time. I heard IT9ZSB, and even was able to conduct a QSO with OH5LK.



The picture below shows my setup. The picture has been taken right after the SO50 dived behind the horizon. The Icom is being fed by the 12V 7AH rechargeable battery.


This picture includes the antenna as well. This is the two-band cross-polarized Yagi. Each part of the antenna is fed by separate feeder. The one is connected to the Wouxun KG-UV8D, the other to the Icom.

I measured the characteristics of the antenna on each band it is operational in. It has a very wide range by the SWR 2.0:1 on the 70 cm band - something about 60 MHZ. Minimal SWR is around the 450 MHz.


This is another view on the same band - you can observe all the parameters of the antenna on some specific frequency.

The same view for 2 m band.

The SWR range by 2.0:1 is about 12 MHz on this band. Not very bad too.

This is the process of writing frequencies to the memory of Icom IC-F111. Fortunately, the overall process is pretty easy - you just have to insert the Prolific based adapter into your PC, put the other end into the microphone socket and voila, everything is OK.

I created the group Satellites and put all the 2 m frequencies into it. In contrary to the 70 cm band the Doppler effect is not so significant and one record per satellite (whatever RX or TX) is enough. The other Icom has different groups for each satellite and 5 records in each.

This is how the Icom displays the selected channel.

And finally, two trancseivers having the rest and waiting for next journey.

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