W8BI ATV REPEATER TECHNICAL DATA SUMMARY

Location:                    Approximately 10 NM South of downtown Dayton

Coordinates:              39 degrees 37.209 minutes (latitude) 84 degrees 14.218 minutes  (longitude)  

Elevation:                   995 feet above sea level, 165 foot tower.  Total height MSL is approx 1150 feet

 

Transmitters:              421.25 MHz AM modulation, horizontal polarization

                                 1258 MHz FM modulation, horizontal polarization

                                  

                                 (Interdigital filters in output line of 421.25)

 

Output Power -         421.25 MHz: 40 watts average 80 watts sync tip

                                 1258 MHz:   20 watts continuous

 

Transmit antennas:     421.25 MHz - Dual slot horizontally polarized 7 dBd gain major lobe north-north-west

                                 1258 MHz -   Dual slot horizontally polarized 7 dBd gain major lobe north-north-west

                                

Receivers:                  144.34 MHz for F1 audio input control of touch tones

                                  910 MHz for F5 video link data from remote sites

                                  1258 MHz for F5 video input

 

Receive antennas:       144.34 MHz - Vert. polar. Hi Gain 12 dBd dual band

                                  439.25 MHz - Horiz. polar. rib-cage antenna, omnidirectional

                                  910 MHz - 18 dBd directional loop yagi aimed 060 degrees towards link site in South Vienna

                                  1258 MHz -   Dual slot horizontally polarized 7 dBd gain major lobe north-north-west