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.
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.
The Tram 1400 comes with three ground radials. Each radial is stainless steel and 20.5 inches long.
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.
After assembly the Tram 1400 was installed on a test stand for tuning.
With very little adjustment, the Tram 1400 was showing very good SWR.
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/
- 2:1 Balun For 2m/6m
- 1:1 Choke For 2m and 6m
- 2m Delta Loop Ver 2
- 2m Delta Loop
- Finishing The 6m Delta Loop With 2:1 Balun