The HAM Radio Operator's Antenna Handbook Page
another web site by;


 "Home of the RASCAL"
115 and 211 LUENBURG DRIVE;   EVINGTON,  VA  24550   FAX 434 525 7818
For TNC to Radio Interface Cable Diagrams, CLICK HERE !

For PSK31 & SSTV Interface Diagrams, CLICK HERE !

bullet Of all HF antennas, the multi-band WINDOM is my favorite.
 
bullet An improved 6 Meter "High-Performance" Base-Station Dipole.
 
bullet HF Antenna Cutting Chart
 
bullet VHF & UHF Antenna Cutting Chart
 
bullet Determine correct spacing between antennas to achive proper isolation.
 
bullet A two meter dipole
 
bullet It's very portable and EZ to build; A TV twin-lead two meter J-Pole
 
bullet Detailed drawing of a two meter "J" Pole antenna.
 
bullet Detailed drawing of a six meter "J" Pole antenna.
 
bullet Design your own "J" Pole antenna.
 
bullet Design your own QUAD antenna.
 
bullet A 4 element, six meter QUAD design using Design-A-Quad.
 
bullet Antennas and Antenna RF Meters
 

BUT FIRST.... let's review some antenna "basics" in pictorial form.


Good photos of VHF & UHF YAGI


Antennas & Accessories


CLICK ON the small graphic to view full size.
Half-Wave HF Antenna Cutting Chart.

 


CLICK ON the small graphic to view full size.
VHF/UHF Cutting Chart
 


CLICK ON the small graphic to view full size.
Antenna Isolation / Spacing Charts
 

 HAM Radio and Commercial 2-way radio antennas


 


A=Benz-O-Matic propane torch; B=Lead-Free solder; C=Tape measure: D=Tubing cutter; E=Sharpie marking pen; F=Solder Paste; G=1/2 inch copper caps; H=Hardcopy of the above drawing; I=Wet Towel; J=PreCut, ready to assemble parts of the 2 meter J-Pole.
 



 



CLICK HERE AND DESIGN YOUR OWN "J" Pole
 


Design-A-Quad Antenna

Calculate the total wire length for each element of a quad antenna.
REFLECTOR = 1030 / F (MHz)
DRIVEN = 1005 / F (MHz)
DIRECTOR 1 = 975 / F (MHz)
DIRECTOR 2 = 960 / F (MHz)

ELEMENT SPACING between:
1) Reflector & Driven Element = 730 / F (MHz)
2) Driven Element & 1st Director= 600 / F (MHz)
3) 1st Director & 2nd Director = 600 / F (MHz)

Enter the formula for the antenna calculation
Divided by Freq MHz

Total wire-length in feet is FEET.
Total wire-length in inches is INCHES.
One of four sides in FEET = <- Use ONLY this number for "element spacing" when entering the element spacing numbers (constants; 730 or 600) above!
Total all spacing measurements (in inches) then add 2 inches for each end.

THE QUAD SHOWN BELOW IS AN EXAMPLE OF A QUAD DESIGN USING DESIGN-A-QUAD ABOVE

ANTENNA  INSULATORS

Weatherproof, (TENYTE) insulators.  Perfect for your DIPOLE or Windom antenna.
For the apartment dweller, you can now hang the 20 meter doublet
in the attic.   I've QSO'd with stations all over the world with the
33 ft dipole in the attic of my garage.   One insulator at the center, and one at each end.  

It's great for other HF WINDOM, single, and multi-band dipole antennas.  Dielectric strength is superior to the old ceramic insulators, without susceptibility to cracking or breakage under impact or extreme temperature changes.
Package of  3,  $2.99   ANTINSL3  

Package of 10,  "TeNyte" BUX TNT Insulators $8.99,  ANTINSLX10

For those who want lightning protection, here is one of many, lightning protection device.

   A Secondary Lightning Protector
Remember the axiom; "An ounce of prevention is
worth a pound of cure."  This lightning protector
contains a modified spark gap that provides that
ounce of prevention.  We offer this device as a
secondary radio protector.   Remember, there is
no substitute for a good earth ground, AC line surge,
and spike protection. 

Keep all ground leads as short as possible.   Where lightning is involved,
we make no warranties.

$ 3.95 each     7516 

UHF DOUBLE FEMALE BULKHEAD (feed-thru) CONNECTORS


For bulkhead and through-the-wall UHF connector feed-thru connections, with keeper nuts.:

Order 7518-2  (Two inches)        $ 2.95 ea.             10 for $ 24.50  
Order 7518-4  (Four inches)       $ 3.95 ea.             10 for $ 34.50  
Order 7518-6  (Six inches)          $ 4.95 ea.             10 for $ 44.50  
Order 7518-8  (Eight inches)     $ 8.95 ea.              10 for $ 82.50  
Order 7518-10 (Ten inches)       $ 10.95ea.            10 for $ 99.50   
Order 7518-12 (Twelve inches) $12.95ea.             10 for $ 114.50 


Heavy Duty  (1") Nuts for the above bulkhead connectors.
2/.99 cents     HDM1-NUT         10 for $ 3.99  


50 Ohm impedance, 3 ft, 6 ft, 9 ft, 12 ft, & 18 feet.
These jumpers are made from high quality, low-loss, RG8X coax cable WxTite, PL-259 connectors installed at each end.
Three ft. (3')    ORDER No.      8X3-PLPL  $3.95    
Six ft. (6')         ORDER No.      8X6-PLPL  $4.95     
Nine ft. (9')      ORDER No.      8X9-PLPL  $5.95     
Twelve ft. (12')   ORDER No.  8X12-PLPL  $7.95  
Eighteen ft. (18')ORDER No.  8X18-PLPL  $8.95  

 

For more RF Connectors and communications site accessories; CLICK HERE !

At BUX COMM, *We don't cut corners!
The components used in the manufacture of our BALUNs are from top quality components, beginning with the Silver Plate SO239 connectors. The center insulator is teflon™(E.I Dupont). The wire we use to wind the ferrite donut is heavy-duty, silver flashed wire, with teflon™ insulation that will handle RF voltages above 5000 volts, and temperatures above 2000 degrees. The binding posts are heavy-duty, tempered brass, with end holes and side-thru holes to accommodate either type loop-thru connection. A double-shoulder brass capture nut is used to add a secure bite and improve antenna wire electrical connections.
 4:1  Balun,  BUXBALUN 41   $19.95

o 50 ohm, SO-239 unbalanced input
o Balanced output
o 1.6 to 50 MHz
o Toroid (Voltage) design
o Heavy Duty, Lightweight construction
o Sealed against moisture
____________________________________________________

1:1  Balun,  BUXBALUN 11  $19.95

o 50 ohm, SO-239 unbalanced input
o Balanced output
o 1.6 to 50 MHz
o Toroid (Current) design
o Heavy Duty, Lightweight construction
o Sealed against moisture
____________________________________________________
BUX UN UN De-Coupling transformer, similar to above, but has SO-239 (female)
input connector and output connector is 1 ft Mini 8 cable with PL-259 (male).
 BUX ONION  $19.95 

 

4:1, 1.5kw Balun,  BUX BALUN 41HD  $27.95
Toroid  design, wound with teflon covered, silver plated wire.* Heavy-Duty, construction.

1:1, 1.5kw Balun,  BUX BALUN 11HD  $27.95
Toroid  design, wound with teflon covered, silver plated wire.* Heavy-Duty, construction. 
 

BUX COMM ©graphic

BUX MOBALUN
When you hear those strong HF mobile signals, here's one reason they stand out from the rest.
By installing the BUX MoBalun near the input to your antenna, you deliver more RF energy to the antenna. At the same time, the BUX MoBalun prevents RF from traveling back along the shield (high SWR) of your coax. High power rating, Low-permeability toroid,  with Internal composition fiber-glass  to prevent vibration during mobile operation. For input and output connectors, we use only the best Silver plated, Teflon insulated, SO239 connectors.  500 watts PEP.  This MoBALUN is also ideal for marine antenna installations.
BUX COMM ©Photo

             $19.95  MOBALUN 

CLICK HERE for Accessories, Antennas, Components, Connectors & Power cords

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G. E. 'Buck' Rogers Sr K4ABT d/b/a BUX CommCo™® ©
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