Broad Band Terminated Dipoles (BBTD, T2FD)

Broad Band Terminated Dipoles (BBTD), Tilted Terminated Fold Dipoles (T2FD) and Balanced Termination Folded Dipole BTFD) antennas can be designed to cover a large range of frequencies between 1.8 30 MHz.  Longer length antennas generally provide better low frequency efficiency but take up a larger footprint of land.   One BBTD that has worked well at the AK6R antenna farm is shown below.  Many other designs are available and can be found at www.HFLINK.COM as well as other internet sites.  Your mileage may vary using this antenna, but as a general coverage antenna for ham and shortwave broadcast, the simplicity can’t be beat even though an individual dipole on a specific band may out perform this broad band dipole.  Palomar Engineers has all the parts you need to build this antenna, so why not give it a try?

BBTD at AK6R 1024x726 - Broad Band Terminated Dipoles (BBTD, T2FD)


Depending on the source of the antenna design, different value baluns are specified.  Our Bullet(TM) baluns in ratios of 9:1, 12:1 and 16:1 are excellent for this type of antenna as they are broadband from 1.8-61 MHz and will take up to 500 watts PEP.

50:800 ohm (16:1) CUBE™ Balun, 1-31 MHz, 1KW/2KW PEP

In stock
Product Details
Input ohms/Output ohms: 50 in/800 out balanced
Frequency Range < 2:1 SWR (MHz): 1-31 MHz
PEP Power Rating (watts): 1000/2000
Insertion Loss (dB): .2
Input Connector: SO-239 UHF
Output Connector(s): Top Studs/Side Eyebolts
Transformer Topology: broadband binocular core
Hardware Type: Stainless Steel
Enclosure Size: 4" x 4" x 2"
Weight (pounds): <2
Antenna Compatability: T2FD, Rhombic, V beam

Available in eyebolts or top stud versions and 1KW/2KW PEP ratings. Excellent SWR over 1-31 MHz range.

Manual Down Load for CB-16-1000/2000

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Likewise Termination Resistor values vary from 500-1250 ohms and we have a good selection shown HERE: