double bazooka antenna
have fun, enjoy the hobby, and upgrade
build your own double bazooka antenna with the following instructions

measurements
length a to e= 468 into frequency (example 468 divided by 1.900=246.32 ft)

length b to d= 325 into frequency (example 325 divided by 1.900=171.05 ft)

feedline 57/ 87/ or 103 feet for optimum performance

materials needed
rg8x (high power),rg58, or rg59
hot glue and hot glue gun
solder and soldering iron
pl 259 connector with proper adapter
empty plastic frosting container with lid
small nylon rope
plastic insulators if you want to get fancy

getting started
#1. measure length of dipole section and cut  246 feet 4 inches
#2. Find center exactly mark with electrical tape (point c see diag)
#3. dertimine length of point b to d and divide in half 171/2=85 feet 6 inches
#4. start at c and measure 85 feet 6 inches and mark with tape both ways
      these will be your b and d measurements
#5. cut length of feedline 103 feet

antenna surgery
#01. take an emty frosting container  and remove lid
#02. cut main container up one inch from bottom
#03. drill 3 holes in side to accept rg8x coax at proper entry points
#04. feed dipole section in one hole and out the other and leave point c inside
#05. feedline should enter through remaining hole
#06. remove 1 inch of vinyl at point c
#07. carefully separate braid into two pieces do not disturb center connector
#08. remove vinyl at end of feedline and prepare center and braid
#09. solder center connector of feedline to one side of braid at c
#10. solder braid of feedline to other side of braid at c
#11. position connection inside frosting cup and completely fill with hot glue
#12. when still warm put lid in place and glue edges from back side
#13. let completly cool then drill a hole in upper section for mounting
#14. Go to point b and remove one inch of vinyl
#15. carefully open a small section of braid and pull center insulator up
#16. remove insulation on center wire
#17. reposition braid over center wire neetly and solder together
#18. cover entire area with hot glue and let cool
#19. repeat steps 14 through 18 at point d
#20 solder together center and braid at points a and e
#21 cover these points with hot glue and let cool

Mounting and tuning
#1. take some strong small nylon rope and install it on each end by using half hitches in about a one foot area at the end dipole section at a and e also attACH A SMALL ROPE IN THE HOLE THAT YOU DRILLED IN THE FROSTING CONTAINER.
#2. install plastic insulators at end of rope
#3. hang antenna up using strong rope and connect to radio and swr meter
#4. check swr and determine resonate frequency (lowest swr)
#5. if tuning is nessasary lower longer/ higher shorter if swr is flat at 1.875 then you need to remove equal length on each end AND REHANG AND CHECK SWR. iF SWR IS FLAT AT 1.950 THEN YOU NEED TO LENGHTEN ANTENNA AND YOU CAN DO THIS SIMPLY BY SOLDERING A LENGTH OF STANDARD DIPOLE MATERIAL TO END

BAND COVERAGE
I CAN WORK THE ENTIRE BAND WITH MY DOUBLE BAZOOKA USING THE HELP OF MY NYE VIKING TUNER. IF YOU HAVE TROUBLES WITH SWR MAKE SURE YOU ARE NOT HAVING ANY INTERFERENCE FROM OTHER ANTENNAS. i HAVE A FLAT MATCH ON 160 METERS AT 1.906 AND MY ANTENNA IS 246 FEET LONG

FEEDBACK
PLEASE SEND YOUR COMMENTS AND SUCCESS STORIES OR FAILURES TO KC0BZE@LEESLIMO.COM

goodluck
goodluck and hope to hear you on 1.907 through 1.935
73s kc0bze
 

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