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BUILD YOUR OWN 3 element 440 / 450 antenna |
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I DRILLED A HOLE IN THE PVC PIPE, TREADED IT 1/4 20, CAMERA TRIPOD BOLDS RIGHT UP TO IT. DIRECTOR & REFLECTOR ARE MADE OF 3/32 DIAMETER COPPER PLATED STEEL WELDING ROD. DRIVEN ELEMENT DIPOLE IS 2 ADJUSTABLE LENGTH SCANNER ANTENNAS. RG174U 52 OHM FEED LINE CABLE, A RCA CONNECTOR ON THE END. CONNECT TO THE HT USE THE MATCHING CONNECTOR. |
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| THE SMALLER DIAMETER PCV PIPE USED WILL ALLOW SHORTER FEED LINE CONNECTION STUBS. I SOLDERED DIRECTLY TO EACH SIDE OF THE DRIVEN ELEMENT. THE STUBS ALSO RADIATE SO YOU MUST TAKE THAT IN TO CONSIDERATION OF THE LENGTH OF THE DRIVEN ELEMENT. AS YOU SEE I USED EXTENDABLE SCANNER ANTENNAS SO I COULD EASILY ADJUST THE LENGTH OF THE DRIVEN ELEMENT. I USED A FIELD STRENGTH METER AND ADJUSTED THEM UNTIL MAXIMUM GAIN WAS ACHIEVED. |
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| MY FIRST TEST WAS THE IRLP IN OMAHA, IT WAS CONNECTED TO THE DENVER, CO. NODE. MY FIRST CONTACT WAS BOB, NØWTA WHO WAS CAMPING AT THE CHERRY CREEK CAMP GROUNDS IN DENVER, CO. HE THOUGHT I WAS A LOCAL. 59 COPY WAS HIS REPLY. |
| IT'S NOW 3 MONTHS LATER AND THIS ANTENNA JUST KEEPS WORKING AND TURNING IN GREAT REPORTS FROM EVERYONE ON ALL THE DISTANT REPEATER AND AND SIMPLEX CONTACTS I MAKE. |
| QUESTIONS OR COMMENTS N0UQZ@YAHOO.COM |
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THIS IS ANOTHER EASY
TO BUILT HOME BREW ANTENNA THAT IS LOTS OF FUN TO BUILT. PERFORMANCE
IN BOTH TRANSMIT AND RECEIVE WAS EXCELLENT. WORKABLE WITHIN SWR LIMITS
ACROSS THE WHOLE BAND.
