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VOA in Delano, CA Between Visalia and Bakersfield, this 801 acre location houses
- ne of the last powerful
HF international broadcast stations.
Voice Of America Delano, Calif. VOA in Delano, CA Between Visalia - - PDF document
Voice Of America Delano, Calif. VOA in Delano, CA Between Visalia - - PDF document
Voice Of America Delano, Calif. VOA in Delano, CA Between Visalia and Bakersfield, this 801 acre location houses one of the last powerful HF international broadcast stations. Rhombic towers View from Melcher Road Dipole array towers
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View from Melcher Road Dipole array towers Rhombic towers
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Rhombic Antenna Tow ers
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Dipole Array Tow ers These are 406 ft ‘skyhooks’
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Delano Transmitting Station Compound and Antenna Field December 1998
Total of 6 reversible Rhombics Low band dipole curtains High band dipole curtains
VOA Delano, Calif.
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Dipole Array Tow er (Side View ) The precision design and workmanship were extraordinary.
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Immense Footings Can you imagine the forces exerted on each tower leg?’ Mark Carson painted the towers
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Up close and ‘personal’ Notice the perfect, alternating white and red painting detail
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Part of the dipole arrays strung betw een the tow ers Multiple transmission lines allowed for azimuthal and elevation angle slewing.
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Maintenance at 200’
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Balanced, open-w ire feedlines connected the antennas to the sw itch-bay on the right. Each of the lines could handle 250 kW.
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Precise tensioning resulted in this w ire layout This was built in the early 1940’s and is still functional
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Tensioning w eights Each of the 13 plates probably weighs well over 100 lbs Look how flat the terrain is!
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HF Exciters The 1 Megawatt transmitter had already been disassembled
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Delano Transmitter/Operating Schedule
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Several of the higher power amplifier tubes Where does the pow er come from?
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Forw ard and Reflected Pow er Meters 2 kW is considered a reasonable reflected power
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Perfect for your new High Power 6m linear amplifier? They have probably all been thrown out by this time. They must have had 40 of these there. Jennings Vacuum Variables 25 – 650 pF 55 kV
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Early View of VOA Control Room
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2012 view of the control room after dismantling Much of the Electronics w ere in these cabinets An IBM “386-x” controlled all antennas and transmitters
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VOA Satellite Interconnect System Delano connected by satellite the US, Indian and Pacific Ocean Regions
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Satellite Interconnections Washington, DC provided the programming for overseas broadcasts
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Largest Satellite System at VOA