 ATV REPEATER
Wienerwald Gablitz JN88CE |
| Located some kilometers west of Vienna a new amateur
television repeater has been installed by members of the Radio
Club ADL303.
The location offers direct line of sight into Vienna area and some valleys west of Vienna, near Gablitz and Purkersdorf ( locator: JN88CE ). |
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The repeater is located in abt. 450m above sealevel overlooking
the area. It offers TV-links to OE1XCB, the strong 2,4 Ghz ATV repeater
in Vienna (Wienerberg) and herewith switchable videolinks to Slovenia and
Germany (future).
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| The hardware was built by OE3DFC
and OE3MZC, using old SAT-receiver
front-ends with I²C-bus and programmable AFC. A 23cm transmitter from
RSE is fed by a baseband
signal, including all audio- subcarriers. The initial output power is amplified
from 500mW to 40 Watt using a Mitsubishi module M57762 from Prinz.
A power-splitter transfers the power into two distinct antenna systems , covering different geographical areas. For remote control reasons a TRX runs permanently on 433.050 Mhz receiving DTMF code.( 44127 ...TX on ) |
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INPUT frequency: 2410 Mhz +-10Mhz Video, Audio carrier 6,5Mhz |
| OUTPUT frequency: 1280 Mhz 15 Mhz bandwith F8W FM-ATV |
| Power: about 40 Watt into 10 element yagi |
| Link frequency: 2440 Mhz from OE1XCB ATV-Wienerberg,Vienna |
| DTMF Frequency: 433.050 Mhz F2B DTMF 44127 |
| MODE: FM-ATV in ASTRA mode with reduced bandwith or all other digital highspeed modes (linear transponder for 15 Mhz). |
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