, *************************************W* SAN FRANCISCO RADIO CLUB SOFTWARE **************************************(" ***HAM ANTENNAS*** "2" A - GROUND PLANE"<" B - YAGI"F" C - DIPOLE" P" D - DELTA LOOP BEAM"4 Z" WHICH ANTENNA DESIGN"H d" DO YOU WANT"^ n" A B C OR D";B$n xB$"A"170~ B$"B"380 B$"C"770 B$"D"890 B$""90 "*GROUND PLANE ANTENNA* " " ENTER THE DESIGN FREQ. IN MHZ" FK "*GROUND PLANE ANTENNA* "a " FOR"F"MHZ" H936F.28:H(H100.5)100 R1.05H:R(R100.5)100 "THE VERTICAL RADIATOR" "SHOULD BE ":" "H" FT." "THE RADIALS SHOULD BE" " "R" FT."V "THE IMPEDANCE MAY VARYWITH THE DIAMETER OF THE RADIATOR. TRY" ""CHANGING RADIATOR LENGTH TO MATCH FEED LINE" ,1050 6"*GROUND PLANE ANTENNA* " @10)"":10)"":10)"":10)""2 J"RADIATOR"10)"":H"FT"10)"":10)"":10)""d T10)"":10)"":" ϣ"| ^"RADIALS":R"FT" h1050 r40 |" ***YAGI DESIGN*** " "WHAT IS THE OPERATING" "FREQUENCY(IN MHZ)"  F  F1.8440 450> "THAT FREQ IS OUTSIDE THE HAM BANDS":400N  F109470] V234:480i V126Fs SVF S(S100.5)100 L2S:R500F R(R100.5)100 D475F D(D100.5)100 H455F &H(H100.5)100+0KL30.48:MS30.48:OR30.48:PD30.48:QH30.48Z:" ***YAGI DESIGN*** "D" DIMENSIONS OF THE 3 ELEMENT WIDE SPACED YAGI ARE:"N" OVERALL BOOM LENGTH":" IS: "L" FT":" OR "K" CM" X" SPACING OF ELEMENTS IS: "S" FT":" OR "M" CM"Sb" THE FEED POINT Z AT "F" MHZ WILL BE":" ABOUT 35 OHMS & THE"l"GAIN ABOUT 7.5 DB & THE F/B RATIO UP TO 30."v1050" ***YAGI DESIGN*** ""DIRECTOR У"H"FT"14)""Q"CM"14)"".14)"":14)"":14)"":14)""J"DRIVEN У"\D"FT"14)""nP"CM"14)""14)"":14)"":14)"":14)"""REFLECTOR"R"FT":O"CM"105040 " ***DIPOLE ANTENNA*** "& " THE CENTER FREQ IN"4" MHZ";Fl N7:L468F:RL30.48:L(L100.5)100:UL2:VR2*" ***DIPOLE ANTENNA*** "4" TOTAL LENGTH IS:">" "L"FT":" "R"CM"H" ϣ"R" LENGTH OF EACH LEG IS"*\" "U"FT":" "V"CM"4f1050<p40oz"**DELTA LOOP ANTENNA** "" THE CENTER FREQ IN":" MHZ";FR1030F:TR3:D1005F:ED3:S984F.2T(T100.5)100:E(E100.5)100:S(S100.5)100I"THE DELTA LOOP BEAM ANTENNA HAS 2 ELEMENTSUSING 3/4 IN. ALUMINUM";"TUBING FOR THE SIDE LEGS AND #12 COPPER WIRE FOR THE TOP.""THE FEED CAN BE TO EITHER LEG OF THE DRI-VEN ELEMENT. A GAMMA" "TYPE FEED SYSTEM GIVESTHE BEST PERFORMANCE."1050I"**DELTA LOOP ANTENNA** "{"MEASUREMENTS FOR"F:"MHZ ARE AS FOLLOWS:""DRIVEN ELEMENT":" TOP="E"FT.":" SIDE="E"FT.""REFLECTOR ELEMENT":" TOP="T"FT.":" SIDE="T"FT." "BOOM LENGTH="S"FT."1050400" HIT ANY KEY"D$A$:A$""1060J.