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.

OCF Antenna Feed Line Choke - RG8X - RFI Range: 1.8-61 MHz

OCFFLC
$27.95
In stock
1
Product Details
MPN: OCFFLC

Off Center Fed (OCF) Antenna Feed Line Choke for 1/4" coax (1.8-61 MHz)

Got an off center fed antenna fed with RG-8X size coax and having feed line radiation (RFI) problems?

This feed line choke will help solve the problem of feed line radiation (which causes RFI to nearby object close to you coax) as well as Improving antenna pattern by preventing your dipole from becoming a tripole

Simple to install as an extension to your existing coax feed line using a female to female barrel connector (available separately).

Install quickly, reduce your coax radiation issues and start working more DX with a better transmission (and reception) antenna pattern.

Also works with single or multi-band loop antennas using a 2:1, 4:1 or 6:1 transformer without a choke.


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