BBTD Antenna

Chuck Ferguson - N4CSF


Please see below -- for your information -- an interesting article written by Darrell Franchuk KG4CCB in Reddick, FL, who is building a new house in Tellico Village and hopes to move here permanently in the Jul/Aug 2023 timeframe.  He reached out to me previously and thought this topic might be of interest to some of our members.

His article deals with the design, installation, and operation of a Broadband Butterfly Terminated Dipole (BBTD) antenna for attic or exterior roof applications.  He notes prior TLARC discussions about this design and considers it to be a rather favorable antenna option, especially when Homeowner Association rules prove overly restrictive for directional outdoor installations.

Please read the article, and decide for yourself.  I've included Darrell's e-mail address in the Cc: line.  So please contact him with any questions, comments, and/or welcoming words of encouragement.  I think Darrell would be a wonderful addition to the TLARC family!

Chuck N4CSF

---------- Forwarded message ---------
From: Darrell Franchuk <kg4ccb@...>
Date: Thu, Mar 9, 2023 at 4:37 PM
Subject: BBTD Antenna
To: Chuck Ferguson <csferg60@...>


While working on a article for my local club newsletter about a BBTD Antenna I came across an online link to a TLARC Groups page with a discussion about TLARC activity with such an antenna in early 2019.  That discussion was 'theoretical' in nature and question the antenna radiation efficiency.  My article is practically oriented and I thought it might be of interest to some in TLARC.

Darrell / kg4ccb

PS:  We expect to be moved up there in July or August.

On 2/8/2023 10:18 PM, Chuck Ferguson wrote:

I’m not antenna expert by any stretch.  However, I have an X50 in our attic in Toqua that hits many of the area repeaters between Kingston, Madisonville, Maryville, Oak Ridge, and Knoxville.  If you mount your’s outside, I’d guess you’ll have no issues hitting the Knoxville antennas and beyond.

On Wed, Feb 8, 2023 at 8:08 PM Darrell Franchuk <kg4ccb@...> wrote:

Thanks.  The ID I indicated below is from TLARC website.  I'll try again later.

I was interested in learning about repeater access.  Our house on Kawga Way in Chota is currently underway (roof just finished) and I am prepping for antennas.  I will put a Diamond X50 2m/440 vertical on a 20ft mast (easy access to TLARC repeater), but was wondering if that will enable me to hit Knoxville repeaters, or if I will need to put a 5 or 7-element Yagi in the attic.  Comments?

On 2/8/2023 8:02 PM, Chuck Ferguson wrote:

Sorry I didn't see your message until now.  The connection info that we provide in our weekly net reminders is as follows:

Join Zoom Meeting


Meeting ID: 788 3633 6488

Passcode: Lr8MNG

I hope this will get you in next time.  We adjourned the chat session about 5 minutes ago.  Take care.


Chuck N4CSF

On Wed, Feb 8, 2023 at 7:38 PM Darrell Franchuk <kg4ccb@...> wrote:


I was trying to log into Wednesday Zoom meeting but was told by Zoom that 815 823 5077 is not a valid Meeting Log In.  Please advise.

Darrell / kg4ccb
v/r, Chuck Sent from Gmail Mobile

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