Saturday, June 30, 2012

TAK-Tenna (BROW DIPOLE)

A REVEALING the TAK-Tenna (BROW DIPOLE) FOR 40 AND 80 METERS



A CONCEPT CREATED BY ALAN R. BROW IN 1969. (SOME WOULD ARGUE THAT ONE VERSION OF AN ANTENNA searched by INCREDIBLE
NICOLAS TESLA) and revitalized NOW FORGOTTEN BY AMERICAN AND EUROPEAN AMATEUR. ALSO CALLED BROWN DIPOLE.


DETAILS:
COM BOOM LENGTH 76 CENTIMETER S MADE OF 1 INCH PVC or 3/4 see below.
4 PIECES OF PVC PIPE WITH HALF LENGTH S 66 CENTIMETER FOR CROSSHEAD. (USE WHITE PVC)
33 CENTIMETER S FOR EACH SIDE (80 TO 76 FEET CAN BE USED A 78 CENTIMETER S)
THE BEGINNING OF A WINDING 8 centimeters from the center
SPACING BETWEEN TURNS 2.5 CENTIMETERS
ALSO ARE ADVISED TO MAKE ADJUSTABLE BOOM, BOOM OR IS USING AS ONE OF PVC 3/4 INCH AND SECTIONS OF 1 TO
SETTING (SEE PHOTO) SIZE WOULD BE GOOD FOR THE VARIED EXPERIMENTALLY CENTIMETER S 68 TO 97 WITH A DECISION MADE
IN TURNS VIA ALLIGATOR JAWS.


FOR COPPER WIRE SPIRAL DRIVE 14 OR 12, BUT NO INDICATION AS THERE SEEMS TO THICKER WIRE BEST BAND
passerby. Bare wire, CAN BE USED ALUMINUM OR STEEL WIRE



The COAXIAL DESCENT MUST BE PLACED IN THE CENTER OF THE BOOM AND TURNS ON THROUGH HARD COPPER WIRE jacketed
EVEN USED IN DIAMETER SPIRAL.


ADJUSTMENT IS MADE OF STATIONARY ranging SIMULTANEOUSLY THROUGH GRAB THE GATOR CONNECTION CABLE FROM THE BEGINNING OF
TURNS (BEGIN WINDING) TO FIND THE BEST POINT, THEN BE MADE WHEN THE SETTING FOR WELD. SETTING THE
ROE SHOULD BE DONE IN FREQUENCY ANTENNA FOR WHICH WAS CALCULATED. IS A CRITICAL AND ADJUSTMENT SHOULD BE MADE A MM MM
AND WITH A LOT OF PATIENCE. THE POINT OF A LOT BETTER ROE MAY VARY FROM ONE TO ANOTHER SPIRAL. PATIENCE!
AT THE SAME TIME INCREASE OR DECREASE THE SIZE OF THE BOOM.
MAY BE NECESSARY TO ADJUST THE SIZE OF THE SPIRAL, CUTTING OR INCREASING THE SIZE OF WIRE, BUT ONLY AS A LAST
INSTANCE.


ANTENNA SETTING MUST BE AT LEAST 2 FEET AND A HALF OF LAND.
IT IS RECOMMENDED THAT IS INSTALLED AS OF 7 FEET HIGH AND SOME USED IN VERTICAL.
TRY.
SOME AUTHORS RECOMMEND A 1:1 BALUN, THINK THAT IMPORTANT.
FOR USE A POLE OF PVC PIPE AND THE METRO 1, INSERTING THE SAME IN METALLIC MAST.

THE LENGTH OF THE FOLLOWING FORMULA TWO SPIRAL
139.5 / f Mhz + 3 IN PERCENT
AFTER DEBT FOR 2 FOR THE LENGTH FOR EACH SIDE OF THE ANTENNA
COAXIAL CABLE TO USE FORMULA 99 / MHz f IN (THE SAME FREQUENCY CALCULATION USED IN PREVIOUS) USING, IF NECESSARY
MULTIPLE WHOLE OF VALUE OBTAINED. CABLE 50 OHMS.
THERE EXPERIENCES OF THIS ANTENNA FOR 80, 40, 20 and 15, 12, 10 AND 11 METERS.
ALTHOUGH it seems the TO BE IMPROVED PERFORMANCE IN 80 AND 40 METERS AND 20M. THE PROBLEM OF ANTENNA SIZE IS NO LONGER AS A CRITICAL
FROM 12 METERS, THE EASY TO USE ANTENNA VERTICAL.
PLEASE NOTE THE PICTURES INDICATE THAT ALMOST HALF OF THE MAKING.




The START WINDING inside out, Although some authors recommend GET INSIDE OUT, TAKE
OPTION.
PLEASE NOTE THAT ONE OF THE SPIRAL BEGINS be rolled from right to left AND OTHER LEFT TO RIGHT.
NORMALLY GIVEN WITH ANTENNA MEASUREMENTS OF 80 METERS HAS 16 OF 40 METERS AND TURNS TURNS 12,
BUT FOR WHICH IT WAS PLANNED FOR FREQUENCY ANTENNA NOT NEED, CAN BE USED COUPLER; SO THE SAME MAY BE

Experienced in OTHER BANDS.



ANTENNA IS A NARROW BAND THROUGH WITH ROE ranging from 1:1 to 1:5 IN A BAND OR 200 150 kilohertz.
NOT EVEN HAVE THE CONVENTIONAL GAIN OF ANTENNAS, BUT MUST BE SHOWN, IN EXPERIMENTS MADE OUT THERE, AN ANTENNA
GREAT FOR THOSE WHO DO NOT HAVE SPACE, IN ADDITION TO BE VERY INTERESTING FOR YOUR LOW COST AND PORTABILITY.
JA BEGIN TO BE MADE FOR A TEST VERSION FOR 160 YARDS.
The "SIZE" SPIRAL CAN BE CALCULATED BY FORMULA: 2 * 3.14 * r ~
SEARCH FOR THE BEST FIT TO BE MADE OF THE SPIRAL WAY MORE PERFECT AS POSSIBLE.
IS AN ANTENNA FOR U.S., new and unusual AND OPEN THE EXPERIENCES OF EACH
The TAI TAK-Tenna OR BROWN ... THAT COULD CALL DIPOLE ANTENNA SPIRAL ........
WHO WILL ENABLE????
I WILL GET MY SOON.
SUBMIT REPORTS OF THEIR EXPERIENCES

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