ATV repeater F5ZEI

Place of installation: Caveirac in the residence of F6BES 6km in the west of Nimes

Administrative person in charge F5AD

Take part in its operation: F6BES, F5AD and F1FCO

Video sources:

• Input 10 220 MHz vertical polarization from F5ZFI in Nimes
• Input 1255 MHz horizontal polarization from users in Nimes
• Local test card with code callsign

Emission 438,5 MHz:

• Frequency 438,5 MHz
• No sub carrier
• Power 14 W
• Double quad in front of reflectors
• Horizontal polarization
• Direction towards Nimes

Reception 10 GHz:

• Antenna: offset parabola 40 cm
• Satellite head: " Telecom II " modified by F5AD
• Satellite receiver modified to always start on the good channel

Reception 1255 MHz:

• Antenna: quadruples quad in front of reflectors
• Preamplifier at the antenna
• Satellite receiver modified to always start on the good channel

Remote controls:

• This repeater is operated by remote control by DTMF on 144,575 MHz
• The code to send the test card on 438,5 is #6B6
• The code to retransmit input 1255 on 438 is #6B7
• The code to retransmit input 10220 on 438 is #6B9
• Emission 438,5 is stopped by a marking time at the end of thirty minutes, it is necessary to start again by #6B6 #6B7 or #6B9
• One can stop the transmission before the end of marking time by command DTMF #6B8

Uses:

• The stations badly released on Nimes can be retransmitted on 438,5 when they transmit on 1255
• Signals 10220 coming from F5ZFI (at F5AD) can be returned manually towards F5ZGN (Aigoual)
• The signals coming from Aigoual on 10310 can be returned manually on 438,5 for the area or on 2320 to F1ZGM (F1FCO)

Projects:

• This repeater will be one of the nodes in the and will allow the Nimes connection towards Aigoual
• The remote control will be modified in the future to be in conformity with that of the network
• The frequency of the remote control will remain 144,575 MHz
• DTMFCodes willl start with #6 (four codes in all)
• A " Web camera " will be installed on the pylon, it will film the antennas
• 10220 MHz signals coming from F5ZFI (at F5AD), currently manual, will be automated in order to retransmit the signals towards F5ZGN (Aigoual)
• The signals coming from Aigoual will be returned on 2320 towards F1ZGM (F1FCO)

Ways, frequencies, adjacents nodes, polarizations

in the final network

Possible commands in the final version: #6B1 #6B5 #6B7 #6B8 #6B9 #6C1 #6C5 #6C7 #6C8 #6C9 #6D1 #6D5 #6D7 #6D8 #6D9

Reference on the 438 MHz

Return to the welcome page

© 1999-2011 A. Ducros F5AD