The Homebrew Slim Jim Antenna Gain
Ham Radio, Hobbies, Random Facts June 10th, 2008
I’ve been searching for information regarding the radiation angle and the gain of slim jim antenna, but found none of it. So I decided to build the model of the antenna inside the ever useful MMANA-GAL software to get the information I needed myself.
From what I can surmise, the slim jim has a slightly lower radiation angle than vertical dipole antenna and is easier to mount, thus it is suitable to use for point-to-point communication VHF-UHF operation. It has a gain of about 2.8dBi-3.2dBi in free space and 4.8-5.8dBi when mounted at about 30feet from the ground. Here’s the result of MMANA-GAL :
Slim Jim mounted 30 feet above ground
Slim Jim in free space
Tags: Add new tag, amateur radio, antenna, Ham Radio, hamradio, homebrew, slim jim, slimjim
Here’s the detail of Kota Setar Amateur Radio Repeater Information :
Frequency : 145.525 MHz
Shift : – 0.600 MHz
Tone : 103.5
Apart from the surrounding Kota Setar area, the repeater is triggerable from Perlis, Langkawi and Sungai Petani, the repeater was erected and maintained by Kota Setar Amateur Radio Club
All licensed ham are welcomed to use this repeater.
Tags: Add new tag, alor setar, ham, information, malaysia, repeater, vhf
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