GAIN FIG 10 DB
     <................. 550MM.................>
     +                                        +
     +                                        +
     +          +                 +           +
     +       +     +           +     +        +
     +     +         +       +         +      +
     +   +             +   +             +    +   550MM
     +    +             00              +     +
     +      +         +    +          +       +
     +        +     +        +      +         +
     +           +               +            +
     +                                        +
     ++++++++++++++++++++++++++++++++++++++++++

SIZE OF ELEMENTS(INSIDE) 170_175MM, ELEMENTS MADE FROM 6MM CABLE

REFLECTOR MADE FROM GARDEN MESH (SQUARES NO MORE THAN 15_20MM)

CLOSE UP OF BOWTIE ELEMENTS
                        +          +
                          +      +
                           +   +
                           +# |+
                          + # | +
                        +   # |   +
                      +     # |     +
            BRADE OF COAX >>   << CENTRE OF COAX

THE BOWTIE IS MADE FROM 1 PIECE OF CABLE ( LIKE 2 W'S PUT TOGETHER BUT NOT
JOINED IN THE MIDDLE)

SOLDER COAX TO BOWTIE AS SHOWN IN CLOSE UP

DISTANCE OF BOWTIE FROM REFLECTOR 100MM. MOVE IN AND OUT TO VSWR.

TO SUPPORT BOWTIE USE 19MM PLASTIC OVERFLOW TUBE.
TO FIX ONTO MESH USE A STRAIGHT PLASTIC OVERFLOW TANK FITTING.
YOU CAN ALSO USE A TANK FITTING ON THE BOWTIE END.
CUT A CROSS SHAPE DOWN THE THREADED END AND FIT BOWTIE INTO CUTOUTS.
FEED THE COAX DOWN PLASTIC OVERFLOW FIX BACKNUT ON THREADED END.
INSERT A PLASTIC WINE CORK INTO END TO STOP FITTING FROM COLLAPSING.
TIGHTEN BACKNUT ONTO BOWTIE.
IF THE BOWTIE SEEMS FLOPPY YOU CAN FIT 2 22MM POLYWASHERS NEXT TO THE
BACKNUT/BOWTIE SANDWICH.
TO WATERPROOF ROUND COAX JOINTS AND PLASTIC FITTING USE SILICON MASTIC.
TO MOUNT THE BOWTIE BEAM I USED A TV U BRACKET. THIS WAS BOLTED TO THE BACK OF
THE REFLECTOR.

DIMENSIONS AND MATERIALS USED

 SIZE OF MESH FOR REFLECTOR 550 MM SQUARE
 DISTANCE FROM REFLECTOR TO BOWTIE 100 MM APPROX
 SIZE OF ELEMENTS(INSIDE MEASUREMENTS) 170 - 175 MM

 REFLECTOR  GARDEN MESH ( 15-20 MM SQUARES )
 2 PLASTIC STRAIGHT TANK CONNECTORS ( LONG THREAD IF POSSIBLE )
 PLASTIC OVERFLOW PIPE
 PLASTIC WINE CORK
 6MM CABLE
 SILLICONE MASTIC
 TV U  BRACKET

LASTLY HAVE FUN BUILDING THE BOWTIE. I HAVE USED THIS ANTENNA FOR 10 YEARS AND
HAVE WORKED SOME GOOD DX.
IF YOU HAVE ANY PROBLEMS ON BUILDING THE BOWTIE BEAM DROP ME A LINE.
TO ANDY G6OHM  @ GB7LPT.22#.GBR.EU E.O.F
73 De John, G8MNY @ GB7CIP