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Antennas_CD-ROM_Walnut_Creek_September_1996.iso
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w4mb
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1996-06-30
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2KB
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39 lines
100 CLS : PRINT " ************************************"
110 PRINT " * DISKCONE WIDEBAND ANTENNAS *"
120 PRINT " *SEE REFERENCE DATA/RADIO ENGINEERS*"
130 PRINT " * PAGE 25-11 *"
140 PRINT " * PROGRAM COPYRIGHT 1985 *"
150 PRINT " * R.P. HAVILAND, W4MB *"
160 PRINT " ************************************"
170 REM PROGRAM 11
180 DEF FNP (X) = INT(10 * X) / 10
190 PI = 3.14159
200 INPUT "ENTER LOWEST FREQUENCY, MHZ"; FL
210 PRINT "ENTER 1 FOR NORMAL CONE, 2 FOR MINIMUM CONE BASE DIAMETER": INPUT CT
220 CM = 1.15: IF CT = 2 THEN CM = 1.25
230 SC = CM * 2834 / FL
240 CA = 60: IF CT = 2 THEN CA = 35
300 PRINT : PRINT "ENTER DIAMETER OF CONE TIP, INCHES,"
310 PRINT "GREATER THAN COAX CONNECTOR DIAMETER "
320 PRINT "BUT LESS THAN "; FNP(SC / 22); "INCHES ";
325 PRINT "FOR MAX/F-MIN 9:1 OR MORE"
328 INPUT CS
330 SP = .3 * CS
340 LV = SC * COS(CA / 2 * PI / 180)
350 CB = CS + 2 * SC * SIN(CA / 2 * PI / 180)
360 DD = .7 * CB
400 PRINT : PRINT "THE CONE HALF-ANGLE IS "; CA; " DEGREES"
410 PRINT "THE CONE HEIGHT IS "; FNP(LV); " INCHES"
420 PRINT "THE CONE SLANT LENGTH IS "; FNP(SC); " INCHES"
430 PRINT "THE CONE BASE DIAMETER IS "; FNP(CB); " INCHES"
440 PRINT "THE CONE TIP DIAMETER IS "; FNP(CS); " INCHES"
450 PRINT "THE CONE-DISK SPACING IS "; FNP(SP); " INCHES"
460 PRINT "THE DISK DIAMETER IS "; FNP(DD); " INCHES"
470 PRINT "THE MAXIMUM FREQUENCY FOR LOW SWR EXCEEDS "; FNP(9 * FL); " MHZ"
480 PRINT "THE LOWER CUTOFF FREQUENCY IS "; FNP(FL / CM); " MHZ"
500 PRINT : PRINT "PRESS R RERUN, ANY OTHER KEY FOR MENU"
510 Q$ = INKEY$: IF Q$ = "" THEN 510
520 IF Q$ = "R" OR Q$ = "r" THEN RUN
600 END