Slim Jim Antenna Projects
Slim Jim Antenna Projects
The Slim Jim antenna is a popular vertical design, often favored by hams for its ease of construction and good performance on VHF and UHF bands. Operators frequently build these antennas for local repeater access, FM simplex QSOs, and even some light DX work, especially on 2 meters and 70 centimeters. Its design offers a low angle of radiation, which can be advantageous for reaching distant stations compared to a standard dipole.
Many operators enjoy building Slim Jims from common materials like twinlead or copper tubing, making them excellent homebrew projects. Resources here include online calculators, such as the one by M0NWK, to determine precise measurements for specific frequencies. You will find construction guides for various bands, including 28 MHz and 4 meters, along with tips for weatherproofing and optimizing gain for your station.
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2 Meter Indoor Slim Jim Antennas for Cyclone Season and Other Uses by VK4MDX -
This 4m Slim Jim Antenna is cheap and easy to build yet it greatly out performs the more usual dipole due to its low angle of radiation. An SWR of 1:1 is obtainable across the 4m ham radio FM band with a simple adjustment. -
Construction details for a 4m Slim Jim antenna, optimized for the 70 MHz FM band. Features low-cost materials, easy build, and low radiation angle. -
A Unique VHF Antenna with gain over a J-Pole Jose I. Calderon, DU1ANV -
Slim Jim Antenna projects by N9TAX -
K0GKJ project of a copper tube slim jim antenna for two meter band -
The 2 Meter 146mhz Slim Jim Antenna using aluminum tubing! -
Build the Slim JIM Antenna, a unique VHF Antenna with gain over a J-Pole Jose I. Calderon, DU1ANV -
How to make a simple but effective Slim Jim antenna. It includes a calculator to work out all the mesurements for the frequency you require. -
Easy to use online Slim Jim antenna calculator. Input your frequency to automatically calculate the lengths of the different antenna parts. -
Some Notes on the Slim Jim Antenna by Dave Coomber M0UXB -
2 Meter Slim Jim Antenna Using 300 Ohm Twinlead -
A Slim Jim Antenna project -
The slim-jim antenna for 144 MHz -
A 10 meters band Slim Jim antenna project, made with a 450 Ohm slotted ribbon cable and secured on a 8 m fishing pole, by Steve G0KYA -
Development of the Slim Jim antenna for HF -
The 2BCX Slim Jim by F.C. JUDD, G2BCX. -
An home made slim jim antenna for 2 meters band by VU2TQC -
How to make a Weatherproof Vertically Polarised Omnidirectional Aerial, The Slim Jim Antenna -
G0KYA slim jim antenna for 10 meters band -
A 144 Mhz Slim Jim Antenna, aluminum tubing version project by Mohammad 9W2WTF -
The Slim-Jim is a bit of a classic - building one is almost certainly a rite of passage and you will be glad that you did: It is easy to make, fairly easy to tune and rolls-up for transportation. -
A simple slim jim antenna for 433 MHz. Simple drawings and pictures of a simple Slim Jim antenna. -
The Slim Jim VHF antenna, originally designed by G2BCX, is a folded half-wave dipole fed by a quarter-wave matching section. This version, built from a recycled professional aluminum dipole, demonstrates that various materials—such as copper, brass, or twin-lead—can be used. The article details the antenna’s construction, required materials, and tuning process, emphasizing mechanical stability and ease of assembly. With proper adjustment of the feed point, it provides excellent SWR across the band. Its durability and simplicity make it a practical and efficient VHF antenna solution. -
Dual Band VHF/UHF Slim Jim Antenna project -
The Slim Jim Antenna Calculator is an online tool that helps hams design a Slim Jim antenna for any desired frequency. This extended version of the J-Pole antenna design does not require a ground plane and is perfect for mounting inside PVC piping. The calculator determines the dimensions of the antenna elements based on the input frequency. Suitable for both receiving and transmitting purposes, this antenna can be easily constructed using common household wiring. The tool provides metric and imperial measurements, along with visual representations of the antenna design for easy reference. -
A comparative article on performance differences between Slim Jim antennas versus J-Pole antennas