Building the G5RV antenna is easier to assemble than you might think.  It uses a "flat-top" section of  #14 copper wire with 41 strands of wire, covered with Poly-Vinyl insulation.  The PVC insulation gives added strength to the stranded wire, and does not attenuate the incoming or outgoing signals. 

A matching section made from 32 feet of 450 ohm ladder/window line.  This thirty-two foot section of 450 ohm window line performs the task of matching, and ghost balun between the coax and the feed-point of the antenna's flat-top section (See Figure 1, below). 

At the station end of the 450 ohm window line, we attach our 50 ohm, coaxial cable with 97% shielding for the final feed-line run into the ham shack. 

Our 450 Ohm ladder line is comprised of poly-coated open wire, number 18, solid "copper-clad steel" conductors.  It is much easier to handle than open wire feeder yet retains its ultra low loss feature.  This feed line will handle a kilowatt with ease

In our case; The 450 ohm ladder/window, is made of Poly Vinyl copper-clad steel, covered with black, UV resistant PVC.  For the transition from the 450 ohm window line to the 50 ohm coax, we use an SO-239 so we can couple the coax to the window line using a standard PL-259.  Once the connection is made, we cover the coupling area, making sure we have a good water-tight connection and good support for the coaxial section. (See Figure 1) .

Figure 1;  The G5RV is often used with an antenna tuner to operate as a Multi-Band HF antenna

The complete G5RV antenna as shown in figure 1.  All connections are made and insulators installed.  Just as it appears here, just hang it and connect the coax.   Includes BUX 1:1 BALUN. Available from BUX COMM 39.95.
Available from BUX COMM: $39.95. Catalog number G5RVPNP

 

 

ANTENNA  INSULATORS

Center Insulator with Suspension Eyebolt

Stainless eyebolt is inserted into Tenyte "Center Insulator"  The "Center Insulator" is used to suspend the center of a Dipole,  Windom, or other wire type antenna from tower, tree, or other support structure.

  1.99 Order CIA       Center Insulator and two end insulators > 3.99  Order CIAX3

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 my garage attic.   One insulator at the center, and one each end.  

It's great for other HF WINDOM and single-band dipole antennas.  Dielectric strength is comparable 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 Insulators $8.99, ANTINSLX10

		ANT202 is a Base Station, (dipole) antenna for (HF) 20, 17, 15, 12, and 10 meters.  We've also used it on 2 meters and 220 MHz with amazing success. INCLUDES 2 end insulators. A202 $27.95 ← For improved HF performance, we recommend our 101 BALUN (reg $ 19.95) A202 & BALUN B101 SAVE $8.00, Order AB102 Both for $ 39.95 AB102
This 450 Ohm ladder line comprises poly-coated open wire. It is much easier to handle than open wire feeder yet retains its ultra low loss feature.  This feed-line will handle 1 kilowatt with ease and is far superior to the 300 Ohm ribbon type.		100 feet   $ 19.95 Cat #  450LADR   50 feet    $ 11.95 Cat #  450LADR50
	100 feet of RG-8U Low-Loss, Base-Station Coaxial Cable.   It's low loss design and 97% or better shield makes it ideal for this application. GOLD PL-259 coax connectors are installed on each end	50 feet of RG-8U with 97% shielding, Low-Loss, Base-Station Coaxial Cable. ORDER:  RG8PL1L $39.97     Both ends are fitted with "GOLD" plated PL259/7506 connectors !    100 feet of RG-8U, with 97% shielding, Low-Loss Base-Station Coaxial Cable. ORDER:  RG8PL1C $59.97
Number 14 TW/AWG with 41 strands of tinned copper wire, Poly-Vinyl insulation covered flexible, but strong.  The most preferred wire type when building Dipole's, Windom's, and other flat-top HF antennas.  The PVC insulation gives added strength to the 41 strands of tinned, copper wire.  Specification:  Finely stranded tinned copper conductor (Type III),  105ºC   600 volt copper. 1.5lb/100 Color coded PVC insulation, Temperature range  -20°C to 105ºC, Voltage rating 600 volts, Reistant to Acid, Alkilis, Abrasion, Flame, Gasoline, Oil, Ozone, Moisture, Fungus.   100 ft, $19.95 10016 ;   200 ft, $38.95,  20016 300 ft, $57.95 30016 ;   400 ft,  $76.95  40016

 

    

At BUX COMM, *We don't cut corners!

The components used in the manufacture of our BALUNs are of top quality components, beginning with the Silver Plate SO239 connectors and center insulator is made of 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.  With our BUX UN UN (ONION), the coax is Belden™ and the PL259 connectors are Amphenol™. 
4:1  1.5 Kw Balun,  BUX BALUN 41HD   $19.95  
Toroid  design, wound with teflon covered, silver plated wire.* Heavy-Duty, construction.

o 50 ohm, SO-239 unbalanced input

o Balanced output

o 1.8 to 50 MHz

o Toroid (Voltage) design

o Heavy Duty, Lightweight construction

o Sealed against moisture

____________________________________________________

 

SPECIAL This Month... !!  BONUS SALE !  Buy either our 4:1 HD  or our 1:1 HD ↓ BALUN and receive "FREE," a Package of three Insulators, as shown above.
____________________________________________________

1:1, 1.5kw Balun,  BUX BALUN 11HD  $19.95  
Toroid  design, wound with teflon covered, silver plated wire.* Heavy-Duty, construction.     

o 50 ohm, SO-239 unbalanced input

o Balanced output

o 1.8 to 50 MHz

o Toroid (Current) design

o Heavy Duty, Lightweight construction

o Sealed against moisture

BUX ONION  $19.95   ↓

 

BUX ONION  "Decoupling (isolation)Transformer"
BUX UN UN De-Coupling transformer, has SO-239 (female)input connector and output connector is 1 ft Mini 8 cable with PL-259 (male).
BUX ONION is and UNbalanced to UNbalance (UN-UN) decoupling transformer designed to be used specifically with the DBLSPCL antenna.   High RF currents traveling along the coax feed-line shield can cause high VSWR.  This decoupling transformer prevents RF currents from traveling down the outer shield of the coax. The input connector is an SO239 (female) and the output connector is a PL259 (male), which mates the connector of the "DBLSPCL" RV/Apartment dweller antenna shown above.

BUX ONION  $19.95 

Important Notice;  WHY USE A  4:1 BALUN

Krusty Olde Kurt is now going to repeat himself.  Why? Because the same question keeps coming up over and over. And he wants everyone to get it right. 

 "I'm feeding my dipole with 600-ohm line.  At the station end I need a balun to convert to 50-ohm coax. I need a 12:1 balun, right?"   Wrong!  A 4:1 balun would be better.

Why is that?  If your dipole is up, let's say, 35 feet then on 80 meters it will probably have a resistance at resonance of about 40 ohms. The actual resistance depends on the height above ground in wavelengths. 

If the dipole is 40 Ohms then what do you see at the transmitter end of your 600 ohm line? If the line is a half-wave long (120 ft on 80 Meters) you'll see 40 ohms.   Remember, a half-wave line repeats what it sees at the other end.  But if it is a quarter-wave long you'll see 8500 Ohms!  At other line lengths you'll see impedances somewhere between these two extremes.

So you are not going to see 450 ohms at the end of your 450-ohm line. That only happens if you have a 500-ohm antenna hooked onto it. With such a variation in impedance at the trans­mitter end of the line there is no one balun transformer that will match it. Most of the time the impedance will be above the 50 Ohms of your coax so a high impedance balun would be desirable.  Unfortunately high imped­ance baluns don't work well when not matched.   

Experience has shown that 4:1 baluns work best in this service.  They are more rugged and will take bad mismatches especially if they are wound on an iron powder core.  So stop searching for that 12:1 balun. Use a 4:l BALUN and your system will work great.  

You can read Kurt N. Sterba “AERIALS” column in World Radio Magazine.

←BUX  Master-Match™  Balun 1:1 
$24.95   MM11 

BUX  Master-Match™1:1 Baluns are ideal for Dipoles, Slopers, Inverted-Vees and center feed-point, RV antennas. They are also employed at the driven element of of many HF beams and Quads, and where feedpoint impedance is at, or near 50 ohms.  By equalizing the currents in the antenna feeders, the Dipole pattern improves and prevents feedline (re)-radiation by preventing antenna currents flowing along the outer braid of the coax transmission line.
Includes three FREE antenna insulators (shown elsewhere, this page).

←BUX  Master-Match™ Balun 4:1 
 $24.95    MM41   

Our BUX  Master-Match™4:1 Balun is ideal for matching windoms, web'd or folded dipoles, and antennas fed at a 250 ohm to 500 ohm impedance feedpoint with normal 50 or 75 ohm coax cable.  In contrast to ordinary Baluns the BUX Master-Match™4:1 Balun support balanced currents in each leg of the antenna and prevents feedline (re)-radiation.   As mentioned in our windom articles, feedlines and 450-ohm, brown, poly-covered ladder-line are easy to handle, and more-over they present another efficient means to feed multi-band antennas.  We strongly suggest the use of our PolyCoat-Ladder-Line as it is made of strong, copper-clad, steel conductors.  This light but durable, PolyCoat-Ladder-Line will far outlast the normal open copper with plastic spacers.  (Includes three FREE antenna insulators, shown elsewhere, this page).

The Got’cha is;  These open type feedlines can bring high RF voltages into the shack.  By using BUX  Master-Match™4:1 Balun near the point where the transmission line enters the HAM shack, we impede that lip-bitting voltage and prevent excessive RF from getting into the PC, the transceiver, the telephone, the television (the XYL is watching) and heaven-forbid, the computer on her automatic washer.

VHF-UHF DOUBLE FEMALE BULKHEAD (feed-thru) CONNECTORS                  YES, we have "one"  1 inch long                     For bulkhead and through-the-wall UHF connector feed-thru connections, with nuts.: Order 7518-1  (One  inch )          $ 1.79 ea.               10 for $15.50   Order 7518-2  (Two inches)        $ 2.95 ea.             10 for $ 24.50   Order 7518-3  (Three inches)     $ 3.69 ea.             10 for $ 32.50   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, coax cable with PL-259 connectors installed at each end. Three ft. (3')    ORDER No.      8X3-PLPL  $3.99     Six ft. (6')         ORDER No.      8X6-PLPL  $4.99      Nine ft. (9')      ORDER No.      8X9-PLPL  $5.99      Twelve ft. (12')   ORDER No.  8X12-PLPL  $7.99   Eighteen ft. (18')ORDER No.  8X18-PLPL  $8.99   Need a High Quality jumper from your transceiver to the linear? A HiQuality coax jumper for that transceiver Output to linear input! The connectors are Amphenol™  and coax is RG-8X by Belden. Hi Quality, Six ft. (9') jumper  made using high quality components.      $6.97    ORDER No.   HIQ9JMPR
Reinforced, Double Bracket used with our "DBLSPCL" antennas shown elsewhere on this page. Mount two mobile whips in a horizontal plane to form a compact apartment dweller Dipole,  or RV antenna.    Double Antenna Bracket as shown at left. $16.95   DBLBRKT     After a few years, the hardened, nylon shoulder washers become weather-brittle and break.  Keep a few spares in the Ham Shack:        4 for 99¢ SM1SW
Mobile tuneable-tip antennas. BHF75M  75 METER  3/8" X 24 THREAD 8 feet long $16.95 BHF40M 40 METER  3/8" X 24 THREAD  8 feet long $16.95 BHF20M 20 METER 3/8" X 24 THREAD  8 feet long $16.95   BHF17M 17 METER  3/8" X 24 THREAD 8 feet long $16.95  BHF15M 15 METER 3/8" X 24 THREAD 8 feet long $16.95   BHF10M 10 METER  3/8" X 24 THREAD 8 feet long $16.95  BHF6M  6 METER  3/8" X 24 THREAD 5 feet long  $16.95    Spare 48" Tips for above tuneable-tip antennas.TIP48, $2.95	Here's the perfect solution for your RV and portable HF antenna applications.  Use our dipole, mast-mounted bracket for 'fixed-station', field-day operating, apartment dwellers, and the RV travelers.  With two of the mobile HF antennas shown at left, you can have the best of both worlds. By combining a pair (two) of the single band HF Mobile (loaded) tuneable-tip antennas, and (VHF) whips at left, you can have an ideal, single element, horizontal dipole (beam). This type antenna opens the world of HF and VHF communications for the apartment dweller, RV HAM, field-day operating, and a variety of other uses and applications.   Antenna(s) Not Included. $16.95 each  DBLBRKT  tuneable-tip antennas allow adjusting for minimum VSWR.  CLICK HERE to read more about our HF DIPOLE SPECIAL!
By combining a pair (two) of the single band HF Mobile (loaded) tuneable-tip antennas above, you can have an ideal, single element, horizontal dipole (beam). This type antenna opens the world of HF communications for the apartment dweller, RV HAM, field-day operating, and a variety of other uses and applications.  The packages described below include two antenna, the Double Antenna-Bracket (DBLBRKT), and mounting hardware $ 39.97 DBLSPCL (without BALUN) With BALUN, see "DBLCOMBO", below. 75 Meters→,    40 Meters→,    20 Meters→, 17 Meters→,    15 Meters→,    10 Meters→,    6 Meters →
By combining a pair (two) of the single band HF Mobile (loaded) tuneable-tip antennas above, you can have an ideal, single element, horizontal dipole (beam). This type antenna opens the world of HF communications for the apartment dweller, RV HAM, field-day operating, and a variety of other uses and applications.  The package described below includes two antenna, the Double-Bracket (DBLBRKT), mounting hardware, and BUX BALUN (UNUN).    $AVE $$$$$, ADD the BUX UNUN , shown below, BOTH, DPLSPCL & BUXUNUN, for only $ 54.97, ORDER, DBLCOMBO  75 Meters→,   40 Meters→,   20 Meters→,  17 Meters→,   15 Meters→,   10 Meters→   6  Meters →

We accept:

Order Line ONLY, Mon > Fri 10 AM to 4 PM,  434 534 8873  or FAX your order, 24/7 to FAX 434 525 7818

Order Line, Mon > Fri 10 AM to 4 PM,  434 534 8873  or FAX your order, 24/7 to FAX 434 525 7818

 All text and graphics on these pages are ©®™ of G. E. Rogers Sr and BUX COMM Corp 1986 - 2005

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