You are looking at a AG6IF built 2 meter ham radio antenna.
3 dimensional folded Full wave loop design. Rugged and solid with soldered copper connections.
Being a full wave loop, Ground losses are minimized and this antenna works very well when close to the ground.
Original design by Dave, w x 7 g and featured in the ARRL handbook or antenna book years back.
This antenna has both a vertical and horizontal radiation pattern and was called “eliptical” by the creator.
Using my analyzer, I have created a very good reproduction of this great antenna design, and improved the feed point.
The 3DFL has a great front to back ratio. (see pic #4 as I rotate the antenna in a 360 degree cycle and measure the S reading from a distant repeater.
You can rotate the antenna to obtain the best signal as the front to back S reading in my tests to a local packet repeater showed
from between s7 to s1 on the uncalibrated S meter on my Ft2600 rig.
Hang it up, or place it on the coffee table.
Connect it to your HT and throw away your rubber ducky antenna.
If you are looking for a stealthy 2m 70cm antenna that can be hung from a low branch or PVC stick, or used just sitting on the end table inside the house, this is the one you want.
Plans are available on my QRZ page (AG6IF) but if you just want to buy one ready to go, this is it.
If you wonder why the price is where it is..It takes me about 3 hours to build one, and I usually end up grabbing a hot section
and burning my fingers a couple times, therefore, I am going to declare that this antenna is moderate to difficult to build.
A small propane torch is needed and a tubing cutter, and the feed point requires some skill to assemble, as well as a good antenna analyzer to dial in the final tuning..
It is constructed of 1/2 copper pipe, and tuned to be nearly perfect SWR between 145.500 and 146.500. The entire 2m band is typically under 1.5 to 1 with the best point is under 1.1, sometimes much less.
Although not designed as a 440 70cm antenna, it works pretty good anyway.
440 band is generally around 2.5/1 at the lowest edge and around 1.6/1 in the middle and up to 2.5/1 at the upper edge.
Crossbanding works most excellent.
Check out one of the 2m SWR sweeps in the picture set.
I will include an actual chart of the antenna, 2m SWR / resonant sweep graph, made with my AIM4170C with each antenna that is made from that exact antenna when produced.
Sorry, no international shipping available on this item at this time.
73 from AG6IF
See More: Link
The day January 22, 2017 a group of OM met to discuss the will ‘and opportunity’ to present the candidacy of ‘Italy as a possible ho... Read more
Contents 4 Third Method narrowband direct upconverter for the LF/ME bands Following on from the circuit published in the May 2016 RadCom, And... Read more
Description RT82 is a dual band DMR radio Frequency band:136-174 & 400-480MHz 10000 Contacts IP67 Waterproof Use Time-Division Multiple-Acces... Read more
Small APRS Transceiver with MicroAPRS by DB1NTO Read full Article from DB1NTO : Read more
Col, MM0NDX – from DX-World.net – will be active holiday-style from the Cayman Islands (NA-016) between April 25 to May 2, 2015. QRV on 1... Read more
PRESS RELEASE Qixiang Electron Science & Technology Co., Ltd was founded in January 1993, and is locate in Quanzhou in China. Qixiang is a high-te... Read more
FCC Plan for Orderly Shutdown The FCC has released its Plan for Orderly Shutdown in case funds become unavailable to continue operation.“If... Read more
Orlando HamCation® at the Central Florida Fairgrounds Friday through Sunday, February 8 – 10 is the 2019 ARRL Southeastern Division Convention. One of... Read more
At the request of the FCC, the ARRL on has filed supplemental comments urging the Commission to continue to make available via the Universal Licensing... Read more
Read Full Article: Can I still use oxidized coax cable ? by DH1TW Read more
Philippine Amateur Radio Association (PARA) Ham Emergency Radio Operations (HERO) network volunteers were ready for Super Typohoon Haima, which struck... Read more
*sorry about quality image 1.244,0 Eur Weight: 21 kg Read more
Koh Rong (IOTA AS-133) Activation This weekend I plan to activate IOTA AS-133. IOTA AS-133 is actually a group of Cambodian Islands, but I will be loc... Read more
Recent Posts
WRTC 2022 IN ITALY?
RadCom Plus, Vol. 2, No. 2
Retevis RT82 DMR Dual Band Handheld Radio – Review
Small APRS Transceiver with MicroAPRS by DB1NTO
ZF2CI , ZF8/ZF2CI & ZF9/ZF2CI – Cayman Islands
INTRODUCTION OF THE AnyTone DMR DIGITAL/ANALOG VHF AND UHF RADIO
FCC Releases Plan in the Event of a Partial Government Shutdown
Orlando HamCation® this Weekend is ARRL Southeastern Division Convention
ARRL Reiterates Call for FCC to Make Historical Licensee Data Available
Can I still use oxidized coax cable ? by DH1TW
Philippine Hams Team Up to Confront Back-to-Back Typhoons
EID175 Antenna Rotor – Eidolon from Norway
XU7AGA – Koh Rong IOTA AS-133
Warning: file_get_contents(https://plusone.google.com/_/+1/fastbutton?url=https%3A%2F%2Fqrznow.com%2Fag6if-built-3dfl-2-meter-full-wave-ham-radio-antenna-works-on-440-70cm-also%2F): failed to open stream: HTTP request failed! HTTP/1.0 404 Not Found in /home/qrznow/public_html/wp-content/themes/goodnews5/framework/functions/posts_share.php on line 151
