The Tram 1400 VHF Aluminum Omni Base Station Antenna.

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While looking for a 2m base antenna, I came across the Tram 1400 Aluminum Omni Directional base antenna. The antenna looked decent in the pictures online so I decided to give it a chance. This antenna is a 5/8 over 5/8 wave ground plane. According to the documentation, this antenna has 6 db gain.

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All the hardware needed to mount the antenna comes with it. The mounting brackets are aluminum and the rest of the hardware is stainless steel.

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The Tram 1400 comes with three ground radials. Each radial is stainless steel and 20.5 inches long.

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The radiating element of the antenna is made of aluminum tubing. The upper and lower portion of the antenna are adjustable. The documentation has a adjustment chart for the length of the tubing for the the desired frequency range. For 144 – 148 MHz range, adjust the lower portion to 55 7/8″ (1420 mm) and the upper portion to 52 3/8″ (1330 mm). Hose clamps are used to hold the tubing in position once adjusted.

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After assembly the Tram 1400 was installed on a test stand for tuning.

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With very little adjustment, the Tram 1400 was showing very good SWR.

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This antenna will be mounted at least 30 feet up. Once installation is complete, real world testing will be performed.

Installing The Tram 1400 https://km4nmp.com/2020/05/10/installing-the-tram-1400-base-antenna/

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Links

https://km4nmp.com/2019/09/14/rebuilding-the-portable-j-pole/

https://km4nmp.com/2019/07/20/2m-portable-slim-jim-antenna/

https://km4nmp.com/2020/02/01/portable-70-cm-yagi-antenna-for-satellites/

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