rosk@rillonia.uucp (Robert Skegg) (05/19/91)
NASA Select TV is being relayed by VE7AII/W5 via the WY5V TV repeater located at Cedar Hill, southwest of Dallas Texas. The coverage area of this repeater includes Dallas, Fort Worth and surrounding areas. Output frequency is 421.25O MHz, horizontally polarized, normal color and sound NTSC video. This repeater may be recived using a 'cable ready' TV receiver or vcr. Tune to channel 57 in cable mode (NOT UHF TV mode!) and connect a horizontally polarized 420MHz outside antenna to the CABLE input (not the UHF input). Point the antenna at Cedar Hill. A test-card caption is transmitted when there is no NASA select or other ham tv traffic. Note that some 'cable-ready' receivers do not cover up to channel 57. UHF TV receivers usually do not tune down to 421.25 MHz without some modification to the UHF tuner. Of course you can use ham tv down-converters designed to cover the 430Mhz band. For those with ham licences, talk-back frequency is 144.34Mhz, nbfm. NASA Select link details: NASA Select is received by VE7AII/W5 from the geo-sync sattelite in the 4GHz band. This video is then re-transmitted on 1277.25 MHz to the WY5V repeater located at 1200ft agl on a TV tower about 8 miles away. The relay is operational between about 5.30pm and 10pm weekdays and all day and evening weekends, depending on NASA activities and if VE7AII is at home. The NASA select feed is sometimes taped during the day, and that tape is scanned for interesting items which are played-back via the TV repeater in the evenings. (The tape is re-used, not retained or copied.) 73, VE7AII/W5 tv (am and fm), Duncanville Tx.