ATV repeater F5ZFI

Place of installation: Nimes in the residence of F5AD in the west of the city

Administrative person in charge F5AD

Take part in its operation: F1FCO, F5AD, F6BES and F6DBU

Video sources:

• Input 10 385 MHz vertical polarization from Marseilles
• Input 2320 MHz horizontal polarization from the east of the town of Nimes
• Local test card with call sign

Emission 1255 MHz:

• Frequency 1255 MHz
• Soun sub carrier on 6,5MHz
• Power 1,6 W
• Antenna: quadruples quad in front of areflector
• Horizontal polarization
• Direction centre town of Nimes

Reception 10 GHz:

• Antenna: offset parabola 60 cm head above to receive with horizontal (see photo)
• Satellite head modified by F1FCO
• Satellite receiver modified to always start on the good channel

Reception 2320 MHz:

• Antenna: 23 elements quad with horn source (as with Tonna)
• The quad elements make the antenna less sensitive to the rain than with Yagi elements
• Standard converter Arabsat at the antenna
• Satellite receiver modified to always start on the good channel

Remote controls:

• This repeater is currently semi-automatic
• The startup is done by remote control DTMF on 144,575 MHz, the code is #5AD
• It detects then the possible presence of an ATV signal on one of its inputs and returns it on 1255 MHz towards the town of Nimes
• The detection of the 2320 has priority in front of that of the 10 GHz
• If there are neither 2320 nor 10 GHz signals atthe antennas, the 1255 GHZ is modulated by the test card.
• Emission 1255 is stopped by a marking time at the end of thirty minutes, it is necessary to start again by #5AD
• One can stop the transmission before the end of marking time by command DTMF #5A0

Uses:

• This repeater is one of the nodes of the network and allows the Marseilles connection towards Nimes: any emission coming from Marseille node F5ZAJ on 10 GHz is retransmitted on Nimes on 1255
• In parallel, the stations badly released in Nimes in the axis of the 2320 antenna can be retransmitted on 1255.

Projects:

• The remote control will be modified in the future; automatic detection will be removed because it causes video Larsens in certain configurations. the system of remote control will be then in conformity with that of the network
• The frequency of the remote control will remain 144,575 MHz
• DTMF codes will start with #5 (four codes in all)
• A " Web camera " will be installed on the pylon, it will film the antennas
• 10220 MHz connection towards F5ZEI (6BES), currently manual, will be automated in order to transmit the signals towards F5ZGN (Aigoual mount)

Ways, frequencies, adjacent nodes, polarizations

in the final network

Possible commands in the final version: #Ä2 #Ä3 #Ä4 #Ä6 #Ä8 #Ä9 #5B2 #5B3 #5B4 #5B6 #5B8 #5B9 #5C2 #5C3 #5C4 #5C6 #5C8 #5C9 #5D2 #5D3 #5D4 #5D6 #5D8 #5D9

Reference on the 10 GHz

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