The 4-LFAR-17/12, an Excellent super-compact Dual band LFA-R Yagi for the 17m & 12mbands
The LFA-R is one of the latest designs from the desk of G0KSC. The LFA-R uses no reflector, just a dipole/LFAhybrid driver laid flat on the boom with one close proximity director. The dual band version has the second band drive element placed close enough for ‘open-sleeve’ coupling to occur in order service can be provided on a second band. This antenna does not give wide band performance (and thus is suited to the WARC bands) but does give incredible levels of gain and F/B per metre of boom. take a look at the specifications below, we think you will agree this is an awesome performer for such a short antenna!
Performance
Gain on 18MHz: 6.89dBi @ 18.110MHz
F/B on 18MHz: 23.82dB @ 18.110MHz
Gain on 18MHz at 15m above Ground: 12.04dBi
Gain on 24MHz: 7.18@ 24.90MHz
F/B on 24MHz: 14.38dB @ 24.90MHz
Gain on 24MHz at 10m above Ground: 12.23dBi
Power Rating: 5kw+
SWR 18MHz: Below 1.4:1 from 18.08MHz to 18.180MHz
SWR 24MHz: Below 1.4:1 from 24.88MHz to 25.00MHz
Boom Length: 1.5m
Weight: 14Kg / 30LB
Turning Radius: 4.251m / 14ft
Wind Load: 0.71 Square metres
Wind Survival: 160KPH / 100MPH
Specification
This antenna deploys elements tapering from 1 inch (25.4mm) to 1/2 inch (12.7mm) for 18MHz with elements starting at 3/4 inch (19.05mm) tapering through 3/8 inch (9.525mm) for 24MHz . The antenna has fully insulated elements which will ensure continuous, high performance for many years to come. Boom to mast brackets are included with all antennas which will support 2 inch (50mm) masts. Boom is 1.75 inch square10SWG aluminum.
Our antennas are constructed with the best quality materials in order that the best mechanical construction can be achieved, not the cheapest and most profitable! Even a digital caliper is used to measure the elements during production to help ensure the best possible results when installed.
Note: Much development time has gone into our antennas, not just on basic electromagnetic design, we are able to model the effect of insulators, booms and other objects to ensure the make-up of our antennas has least effect on performance and pattern degradation. More information can be found here
- Marine grade stainless steel fittings
- Original Stauff Insulation clamps
- Mill finished boom and elements for highest levels of accuracy
- Specifications subject to change without notice
See More: Link
Enlarge the Pictures
Recent Posts
![WX4NHC – Ham Radio Ops Play Special Role At Hurricane Center – CBS Miami [ Video ]](https://qrznow.com/wp-content/uploads/2015/06/hurricane-265x168.jpg)
WX4NHC – Ham Radio Ops Play Special Role At Hurricane Center – CBS Miami [ Video ]
Hurricane Center MIAMI (CBSMiami) – Believe it or not, 100 year old technology plays a special role during hurricane season at the National Hurricane... Read more
WiRES-X Software & FT-2DR Firmware Announcement
Originally broadcasted live on the Yaesu System Fusion – Official Facebook group. John Kruk, N9UPC, National Sales Manager for Yaesu USA briefly... Read more
FT8 Enthusiasts Urged to Upgrade Now
WSJT-X 2.0 Full Release Now Available The WSJT-X 2.0 software suite has been released, and developer Joe Taylor, K1JT, is urging FT8 and MSK... Read more
A New Sunspot & More Aurora while A Mars Helicopter Preps for Flight | Space Weather News 04.05.2021
A New Sunspot & More Aurora while A Mars Helicopter Preps for Flight | Space Weather News 04.05.2021 Read more
Field Testing The MFJ Octopus Antenna | Did It survive the wind?
“This time, I’m out in the field (way out in the Arizona desert) Field testing the MFJ Octopus antenna. So how does it hold up in 60 MPH w... Read more
QRPGuys K8TND Regenerative Receiver – $40
“How better to explore the world of shortwave listening than with a regenerative receiver. The QRPGuys K8TND Regenerative Receiver covers the 60... Read more
QSO Today Episode 062 Larry Makoski W2LJ
Larry Makoski, W2LJ, is a QRP CW operator, founder of the “Skeeder Hunt”, an outdoor QRP contest, and a blogger with many stories to tell and observat... Read more
Sky Sat Communications Confirms Initial Production Run of TCP/IP-Enabled 4O3A GeniusTM Amateur Radio Products
Igalo, Montenegro & Grand Junction, Colorado – October 1, 2015 – Sky Sat Communications founder and CEO Ranko Boca (amateur radio call... Read more
Dealing With Noise in HF Mobile Installations
Many hams find that their HF mobiles receive more noise than they do usable signals. Common noise sources include the ignition system and alternator.... Read more
Kenwood TH-D72A 144/430MHz FM Dual Bander
Featuring the SiRFstar III™ high-performance GPS receiver, KENWOOD’s TH-D72A dual-band transceiver is compatible with APRS® data communications. Offer... Read more
What happened to the sunspots ?
Giant sunspot group AR1944 seen in January of 2014. Credit: NASA/SDO by Steve Davidson AUSTIN, Texas, July 9, 2015 – On June 30, 2015 the globally re... Read more
First-Time Exam Applicants Must Obtain FCC Registration Number before Taking Exam
Beginning May 20, 2021, all amateur examination applicants will be required to provide an FCC Registration Number (FRN) to the Volunteer Examiners (VE... Read more
IARUMS Region 1 Presentation by HB9CET
The International Amateur Radio Union (IARU) is a federation of national associations of certified radio amateurs, representing over 150 countries and... Read more
Ten- Tec 507 Patriot – Open Source Arduino-based SSB/CW QRP Transceiver
The 507 Patriot utilizes a chipKIT Uno32 prototyping board which give users access to an Arduino-based programming environment. With its 32-bit... Read more
ZX5B – Batuta Island, SA-088
Brazilian operators PP5BZ, PP5BK, PU5ATX, PY3OZ, PY5ZB and PY5ZW will be active from Batuta Island SA-088 as ZX5B between April 21-24, 2016. QRV on 40... Read more
Warning: file_get_contents(https://plusone.google.com/_/+1/fastbutton?url=https%3A%2F%2Fqrznow.com%2F22-4-element-1824mhz-yagi-1-5m-force12%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
![JT65-HF-HB9HQX-Edition 4.7 [ UPDATE ]](https://qrznow.com/wp-content/uploads/2017/02/1-265x168.png)
 element 18/24MHz Yagi (1.5m) Force12){kind=link}