Educational screen & audio-visual guide (c1956-1971])

deuce about the various aspects of the total ists. Although the production and administrative )sts for airborne and for ground-based trans ii^sion wfould be approximately the same, ipital outlay and operating costs show a sub antial difference. This difference is apparent 1 1 able A, comparing costs for facilities need 1 to reach an equivalent territorial area. Ill each case computations have been made > l)rojecting the Midwest Program beyond the o|tct phase, when only two programs will be insinitted simultaneously. Assuming that the aximum potential of six programs would be iiismitted and that one fully equipped standby III aft would be provided to serve every three n raft used as airborne facilities, the costs of a '<■ airborne facility would then be increased le-third. i lie ground-based facility assumes six 1-kilo iitl transmitters, a 1,000 foot tower, and a ule antenna onto which all six programs would iiiiiltiplexed. Additional micowave equipment, ei and above the main studio-to-transmitter kv would be needed to tie these stations to I'. The cost of a six-channel system is .. .mated at a minimum of approximately $1,500 r mile and may be substantially more. To together 14 stations, each with a service dins of approximately 50 miles, would require subsidiary links, each approximately 100 les long. Allowing for off-the-air pickup and ducing the mileage to one-half, the costs for icrowave equipment may be estimated as: 13 links x 100 miles x $1,500 per mile x V2 = 75.000 lus the total cost for ground-based facilities uivalent to one airborne facility is approxitely $9,254,000 for UHF facilities and $975, 0 for microwave facilities, totaling $10,229,000. f^erest Charges an Capital Costs Assuming that it would be necessary to bormoney to meet capital costs, there would be ditional yearly charges for interest. At 6 per nt per year simple interest, these would lount to 6% of $3,463,000 or $207,800 per year airborne facility; 6% of $10,229,000 or $613, 1 per year for equivalent ground-based facili loiiization of Capital Costs \ssuming that the entire capital costs should amortized over a period of years, the annual irges for interest at 6 per cent and reduction principal would be, if amortized over a 5■tr period, $806,000 p>er year for airborne ility or $2,381,300 per year for equivalent und-based facilities. f amortized over 10 years, this would be )5,400 per year for airborne facility or $1,[,800 per year for equivalent ground-based lities. erating Costs lie operating cost estimates also assume six grams are being transmitted simultaneously six hours a day and four days a week. Certain Table A. AIRBORNE CAPITAL COSTS FACILITY Aircraft or Tower $1,000,000 Aircraft Auxiliary Power, etc. 230,000 Antenna and Accessories . 100,000 Transmission Line 2,000 Transmitters (6) 750,000 Input and Monitoring Equipment 130,000 Test Equipment 5,000 Building and Land — Installation 200,000 Studio to Transmitter Links 180,000 Total for one facility $2,597,000 Total for 1 1/3 Airborne or 14 groimd facilities $3,463,000 Table B. GROUNDBASED FACILITY $ 125,000 50,000 32,000 160,000 120,000 4,000 50,000 30,000 90,000 $ 661,000 $9,254,000 EACH EACH GROUND AIRBORNE BASED FACILITY FACILITY Transmitter Operators $20,000/yr.* $ 15,000 Maintenance and Supervisory Personnel 15,000 15,000 Tubes and Maintenance 40,000 20,000 Transmitter Power 30,000 3,000 Building and Tower Lights 1,000 Building Maintenance — 600 Tower Maintenance — 1,000 Aircraft Operation Oil, Gas, Crews, etc. 440,000 Maintenance, Overhaul, Engin e 168,000' Replacement, etc. Total $713,000 $ 55,600 * Add 1/3 of the items for spare aircraft 63,000 $776,000 — Total for 11/3 airborne or $778,400 14 ground-based facilities Table C. Summary of Operating and Capital Costs a) Capital Cost b) Annual cost without amortization Operating Interest @ 6% Total AIRBORNE FACILITY $3,463,000 EQUIVALENT GROUNDBASED FACILITIES $10,229,000 $ 776,000/yr. 207,800 $ 983,800 c) Annual cost with amortization in 5-year period Operating $ 776,000 Amortization: principal -f 806,200 interest Total $1,582,200 ucATioNAL Screen and Audiovisual Guide— January, 1961 $ 809,000 613,700 $1,422,700 $ 809,000 2,381,300 $3.190,300 19