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Ham Radio
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Ham Radio CD-ROM (Emerald Software) (1995).ISO
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freq
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tvdir
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tvdir.bas
Wrap
BASIC Source File
|
1988-12-16
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1KB
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55 lines
1 KEY OFF
2 CLS
3 LOCATE 1,1,0
10 PRINT "TV CHANNEL FREQUENCY DIRECTORY"
20 PRINT "******************************"
30 PRINT "ENTER TV CHANNEL : ";
35 INPUT A$
40 A=ASC(A$):IF A>64 THEN 300
50 C=VAL(A$)
100 IF C<2 THEN 600
110 IF C<5 THEN 200
120 IF C<7 THEN 190
130 IF C<14 THEN 180
140 PRINT "UHF OR CABLE";
145 INPUT B$
150 IF LEFT$ (B$, 1)="C" THEN 320
160 IF C>83 THEN 600
170 BC=14:BF=470:GOTO 400
180 BC=7:BF=174:GOTO 400
190 BC=5:BF=76:GOTO 400
200 BC=2:BF=54:GOTO 400
300 IF A>90 THEN 600
310 C=A-51:PRINT A$;" = CABLE CH# ";C
320 IF C>40 THEN 600
330 IF C<23 THEN PRINT "MID BAND CHANNEL":GOTO 360
340 PRINT "SUPER BAND CHANNEL"
350 BC=23:BF=216:GOTO 400
360 BC=14:BF=120
400 LB=BF+(C-BC)*6
410 UB=LB+6
420 FV=LB+1.25:FC=FV+3.58:FA=FV+4.5
430 FL=LB+47
440 IL=UB+41*2:IU=LB+47*2
450 PRINT "FREQUENCY RANGE=" ;LB;" TO ";UB;" MHZ."
460 PRINT "PIX CARRIER =" ;FV;" MHZ."
470 PRINT "COLOR CARRIER =" ;FC;"MHZ. "
480 PRINT "SOUND CARRIER =" ;FA;" MHZ."
490 PRINT
500 PRINT "NOTE: THE FOLLOWING ASSUMES A
512 PRINT "RECIVER WITH A 41-47MHZ I.F.
515 PRINT "(41.25MHZ SOUND, 45.75MHZ PIX.)"
516 PRINT
520 PRINT "LOCAL OSCILLATOR=" ;FL;"MHZ."
540 PRINT "IMAGE RANGE=";IL;"TO";IU;"MHZ."
545 PRINT
550 PRINT "MORE";
560 INPUT C$
570 IF C$="Y" THEN 20
571 IF C$="y" THEN 20
572 IF C$="N" THEN 575
573 IF C$="n" THEN 575
575 CLS
580 END
600 PRINT "NON-EXISTANT CHANNEL":GOTO 20