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Antennas_CD-ROM_Walnut_Creek_September_1996.iso
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w4mb
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vol2
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clfa.asc
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Text File
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1996-06-30
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7KB
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143 lines
2 ON ERROR GOTO 60000
3 CLS
10 PRINT " **************************************************************"
20 PRINT " * CLOVER-LEAF ANTENNA *"
30 PRINT " * REFERENCE - RSGB VHF/UHF MANUAL *"
40 PRINT " * PROGRAM BY R.P. HAVILAND, W4MB *"
50 PRINT " * COPYRGHT 1990 *"
60 PRINT " * MINILAB BOOKS, DAYTONA BEACH, FL 32121-1086 *"
70 PRINT " **************************************************************"
80 DEF FNP(X)=INT(100*X+.5)/100
90 INTM=1/39.37
200 PRINT " A CLOVERLEAF IS A HORIZONTALLY POLARIZED, OMNI-DIRECTIONAL ARRAY"
210 PRINT " OF THREE ONE-WAVELENGTH LONG ELEMENTS. EACH ARE FORMED INTO THE"
220 PRINT " SHAPE OF A TRIANGLE WITH ROUNDED OUTER ENDS. THE CENTER OF "
230 PRINT " THE TRIANGLES ARE SPACED 120 DEGREES. THE START END OF ALL"
240 PRINT " ELEMENT ARE CONNECTED TOGETHER, AS ARE THE FINISH ENDS.
250 PRINT " FEED IS BY COAX TO THE START AND FINISH POINTS, WITH A"
260 PRINT " HAIRPIN MATCHING LOOP IN PARALLEL."
300 INPUT " ENTER OPERATING FREQUENCY, MHZ";FO
310 IF FO=<0 THEN 400
320 LAM=299.8/FO
330 LAMIN=LAM*39.37
340 RAT=LAMIN/81.4
350 PRINT " WAVELENGTH=";FNP(LAM);"METERS"
360 PRINT " =";FNP(LAMIN);"INCHES"
400 INPUT " PRESS RETURN FOR ELEMENT SKETCH AND DIMENSIONS";T$
600 CLS
610 PRINT " C O O O O O O O O O O C"
620 PRINT " C C"
630 PRINT " C C"
640 PRINT " C C"
650 PRINT " S E"
660 PRINT " S E"
670 PRINT " S E"
680 PRINT " S E"
690 PRINT " S E"
700 LOA=80*RAT
710 LOAM=LOA*INTM
720 CCTCC=19.5*RAT
730 CCTCCM=CCTCC*INTM
740 CENC= 5*RAT
750 CENCM=CENC*INTM
760 RADC=5.5*RAT
770 RADCM=RADC*INTM
780 OTCL=21*RAT
790 OTCLM=OTCL*INTM
800 WOA=30.5*RAT
810 WOAM=WOA*INTM
820 DT=.373*RAT
830 DTM=DT*INTM
840 SEP=1*RAT
850 SEPM=SEP*INTM
860 HPL=4.625*RAT
870 HPLM=HPL*INTM
880 HPW=.75*RAT
890 HPWM=HPW*INTM
900 DIA=.375*RAT
910 DIAM=DIA*INTM
1000 PRINT
1010 PRINT " LENGTH OF TUBING REQUIRED, S+C+O+C+E,=";FNP(LOA);"INCHES"
1120 PRINT " =";FNP(LOAM);"METER"
1130 PRINT " SEPARATION, CENTER OF CURVATURE OF C,C=";FNP(CCTCC);"INCHES"
1140 PRINT " =";FNP(CCTCCM);"METER"
1150 PRINT " DISTANCE, CENTERS OF CURVATURE TO 'O O' LINE=";FNP(CENC);"INCHES"
1160 PRINT " =";FNP(CENCM);"METER"
1170 PRINT " RADIUS OF CURVATURE=";FNP(RADC);"INCHES"
1180 PRINT " =";FNP(RADCM);"METER"
1190 PRINT " WIDTH OVERALL=";FNP(WOA);"INCHES"
1200 PRINT " =";FNP(WOAM);"METER"
1210 INPUT " PRESS RETURN TO CONTINUE";T$
1220 PRINT
1230 PRINT " TUBING DIAMETER=";FNP(DIA);"INCHES"
1240 PRINT " OR";FNP(100*DIAM);"CM"
1250 PRINT " DISTANCE, 'OO' LINE TO 'S-E' PROJECTED INTERSECTION POINT=";FNP(OTCL);"INCHES"
1410 PRINT " =";FNP(OTCLM);"METER"
1420 PRINT " INCLUDED ANGLE BETWEEN 'S' AND 'E' SECTIONS= 100 DEGREES"
1430 PRINT " ENDS OF 'S' AND 'E' ARE SEPARATED BY";FNP(SEP);"INCHES"
1440 PRINT " OR";FNP(100*SEPM);"CM"
1500 PRINT " ANGLE BETWEEN ADJACENT ELEMENT CENTERS= 120 DEGREES"
1510 PRINT " CONNECT ALL S END POINTS TOGETHER"
1520 PRINT " CONNECT ALL E END POINTS TOGETHER"
1530 PRINT " CONNECT 50 OHM COAX TO S,E JUNCTIONS"
1540 PRINT " FOR BETTER MATCH, SHUNT BY A HAIRPIN, FORMED INTO A 'J' SHAPE"
1550 PRINT " WIDTH OF HAIRPIN STRAP=";FNP(HPW);"INCHES"
1560 PRINT " OR";FNP(100*HPWM);"CM"
1570 PRINT " LENGTH OF HAIRPIN STRAP=";FNP(HPL);"INCHES
1580 PRINT " OR";FNP(100*HPLM);"CM"
1590 PRINT " CONNETION HOLE CENTER SPACING"
1600 PRINT " TYPICAL MATERIAL- 16 GAGE ALUMINUM"
1610 PRINT " ADJUST LENGTH FOR BEST SWR AT BAND CENTER."
1800 PRINT " SEE REFERENCE FOR MORE CONSTRUCTION DETAILS.
2000 INPUT "ENTER P=PRINTOUT, R=RERUN, OTHER = QUIT";T$
2010 IF T$="P" THEN 10600
2020 IF T$="R" THEN 300
2030 STOP
10600 LPRINT " CLOVERLEAF ANTENNA FOR:"FO;"MHZ":LPRINT""
10610 LPRINT " C O O O O O O O O O O C"
10620 LPRINT " C C"
10630 LPRINT " C C"
10640 LPRINT " C C"
10650 LPRINT " S E"
10660 LPRINT " S E"
10670 LPRINT " S E"
10680 LPRINT " S E"
10690 LPRINT " S E"
11000 LPRINT
11010 LPRINT " LENGTH OF TUBING REQUIRED, S+C+O+C+E,=";FNP(LOA);"INCHES"
11020 LPRINT " =";FNP(LOAM);"METER"
11030 LPRINT " SEPARATION, CENTER OF CURVATURE OF C,C=";FNP(CCTCC);"INCHES"
11040 LPRINT " =";FNP(CCTCCM);"METER"
11050 LPRINT " DISTANCE, CENTERS OF CURVATURE TO 'O O' LINE=";FNP(CENC);"INCHES"
11060 LPRINT " =";FNP(CENCM);"METER"
11070 LPRINT " RADIUS OF CURVATURE=";FNP(RADC);"INCHES"
11080 LPRINT " =";FNP(RADCM);"METER"
11090 LPRINT " WIDTH OVERALL=";FNP(WOA);"INCHES"
11200 LPRINT " =";FNP(WOAM);"METER"
11210 LPRINT ""
11220 LPRINT
11230 LPRINT " TUBING DIAMETER=";FNP(DIA);"INCHES"
11240 LPRINT " OR";FNP(100*DIAM);"CM"
11250 LPRINT " DISTANCE, 'OO' LINE TO 'S-E' PROJECTED INTERSECTION POINT=";FNP(OTCL);"INCHES"
11410 LPRINT " =";FNP(OTCLM);"METER"
11420 LPRINT " INCLUDED ANGLE BETWEEN 'S' AND 'E' SECTIONS= 100 DEGREES"
11430 LPRINT " ENDS OF 'S' AND 'E' ARE SEPARATED BY";FNP(SEP);"INCHES"
11440 LPRINT " OR";FNP(100*SEPM);"CM"
11500 LPRINT " ANGLE BETWEEN ADJACENT ELEMENT CENTERS= 120 DEGREES"
11510 LPRINT " CONNECT ALL S END POINTS TOGETHER"
11520 LPRINT " CONNECT ALL E END POINTS TOGETHER"
11530 LPRINT " CONNECT 50 OHM COAX TO S,E JUNCTIONS"
11540 LPRINT " FOR BETTER MATCH, SHUNT BY A HAIRPIN, FORMED INTO A 'J' SHAPE"
11550 LPRINT " WIDTH OF HAIRPIN STRAP=";FNP(HPW);"INCHES"
11560 LPRINT " OR";FNP(100*HPWM);"CM"
11570 LPRINT " LENGTH OF HAIRPIN STRAP=";FNP(HPL);"INCHES
11580 LPRINT " OR";FNP(100*HPLM);"CM"
11590 LPRINT " CONNETION HOLE CENTER SPACING"
11600 LPRINT " TYPICAL MATERIAL- 16 GAGE ALUMINUM"
11610 LPRINT " ADJUST LENGTH FOR BEST SWR AT BAND CENTER."
11800 LPRINT " SEE REFERENCE FOR MORE CONSTRUCTION DETAILS.
11810 GOTO 2000
50000 END
60000 PRINT "ERROR";ERR;"AT LINE";ERL
60010 STOP