The TTFD antenna have several advantages as well as disadvantages. Wide
bandwidth and low SWR but below 10 megahertz loses gain compared to a standard
dipole.. B&W as well as a few others have marketed such versions. You can build
one fairly easily. A 16 to 1 balun and a ~900 ohm non-inductive resistor
capable of handling the power.. I had one once and it worked okay but like I
said below 10 MHz it's a poor performer radiation wise, Dr John Kraus, W8JK,
sk, determined that in tests. It's good for a quick emergency setups and
portable use and for installations that don't want to use an antenna tuner.
Chris WB5ITTTrustee W5APXWRXZ789 GMRSSociety of Broadcast Engineers Vice
Chairman and Frequency Coordinator, SBE134 SE TX and SW LA
On Wednesday, August 13, 2025 at 08:45:40 PM CDT, Mike Hardwick via BVARC
<[email protected]> wrote:
I made a goof on the information on tomorrows meeting subject by Bill Crowell,
N4HPG. Bill will be talking about the Tilted Terminal Folded Dipole or TTFD. I
found more info on the antenna in Wikipedia:
The Tilted Terminated Folded Dipole (T²FD, T2FD, or TTFD) or Balanced
Termination, Folded Dipole (BTFD) - also known as W3HH antenna - is a
general-purpose shortwave antenna developed in the late 1940s by the United
States Navy.[1][2] It performs reasonably well over a broad frequency range,
without marked dead spots in terms of either frequency, direction, or angle of
radiation above the horizon.
You can check Wikipedia for more info or simply come out to the BVARC general
meeting tomorrow evening at 7 pm.
See you there.
Mike Hardwick, N5VCXPresidentBrazos Valley Amateur Radio Club713-826-6917
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