Why?

The available frequencies for Interlinks in the 23cm tape are forgiven almost completely in many regions of Germany. The practically employable transfer-installment is furthermore, caused by which 50 kHz canal-screens and 30 kHzes wide ZF filters, on 19200 bauds restricts. For the binding again Digipeater und/oder of higher throughputs remains only the application höherfrequenter ribbons as way out. Since the ribbons are not available because of problems with the primarily-users about 2,4 and 3,4 GHzes for Interlinks, became the 6cm from some amateurs - band (approximately 5,6 GHzes) proposed. End of 1994, there was only a relatively costly to it (frequency-preparation) and for high throughputs not usable concept (phase-modulation of the station). The for this frequency-area necessary microwave-parts are relatively expensive. So, alone a horn-emitter costs approximately to the Ausleuchtung of a parabolic-mirror DM 220, -. Already because of the expenses, we have not pursued this project further. An as cheap as possible Interlink envisioned us over a relatively short distance. Concrete occasion was a connection between a high-rise in Tübingen (location of DB0AAA) and a high-rise in Reutlingen (DB0PRT) over a distance of approximately 14 km with optical view. The solution lay paradoxically on an even higher frequency: 10 GHzes.