400-403CROSS24 Antenna 400 – 403MHz

Lightweight 400-403CROSS24 Antenna for Long-range communication, meteorological satellites (Data Collection Systems), Weather balloons, and Earth exploration satellite services (EESS) in the frequency range 400 MHz to 403 MHz. This antenna features excellent gain for its boom length, flat SWR, and a low-noise design. Along with the antenna, you can also order the RHCP Kit similar to this one. Tuned for the 400-403 MHz frequency range.

 

400-403CROSS24 Antenna Appearance:

 

What does 400-403CROSS24 mean?

• 400-403 – Frequency range from 400MHz to 403MHz
• CROSS – CROSS Yagi antenna has horizontal and vertical elements separated on a single boom; the antenna is mounted in a “+” format
• 24 – 24 elements, 12 elements of horizontal polarization, and 12 elements of vertical polarization

Made to order for mounting on a horizontal or vertical Fiberglas pipe.

 

Electrical Specifications of 400-403CROSS24 Antenna

Frequency Range: 400 – 403 MHz
Free Space Forward Gain: 14.4 dBi
Front-to-Back Ratio: 30 dB
-3 dB Horizontal Beamwidth: 35.9°
Polarization: Horizontal and Vertical or RHCP (with added RHCP Kit)
Distance Between Dipoles: 187mm
Degrees: 90°
Isolation Between Antennas: More than 28dB
Nominal Input Impedance: 50 Ohms
SWR Across Entire Band: < 1.2
Maximum Power Input: 850W
Matching Method: Direct feed through common mode choke (current balun)
Connectors: 2 x “N”

 

400-403CROSS24 Antenna Azimuth Radiation Pattern

 

Mechanical Specifications of 400-403CROSS24 Antenna

Number of Elements: 24 (12 + 12)
Element Diameter: 4 mm Aluminum rod
Both dipoles: diameter of 8 mm, Hard Copper tubing with a plastic coating
Longest Element: 365 mm
Element Mounting Position: CROSS antenna – 2 Sides
Balun and Connectors: Included
Boom Length: 2.32 m
Boom Size: 20×20 mm
Turning Radius: 1.3 m
Number of Boom Pieces: 2
Guy rope support: No, strong boom
Mounting Mast Diameter: 43- 70 mm 1-11/16″ – 2-3/4″ OD
Clamp: Goliath
Survival Wind Speed: 150 km/h
Net Weight: 1.9kg
Gross Weight: 2.8 kg
Transportation Length: 119 cm

 

Antennas-Amplifiers Product Benefits. A Major advance in antenna design.

• F/B and G/T superiority.
  All antennas have been calculated using state-of-the-art full 3D EM modeling software, including the influence of the boom, bracket, baluns, and connectors. The performance of antennas designed using these techniques is exceptional, significantly outperforming those designed with the EZNEC program.
• No tuning antennas.
  Before dispatch, we assemble and test each antenna’s characteristics — no need to tune any element to get a perfect SWR on the intended frequency range. Everything is pre-tuned.
• Easy to set up.
  Everything is labeled; just put a number to a number. Everything is included in the box: Antenna, balun, bracket, and guy rope support if needed. Yours is to assemble and have fun!
• Mechanical properties.
  We believe our antennas are the world’s strongest and are mechanically constructed far better than those from other manufacturers.

 

The longer model is here

If you want another boom length with more or less gain, ask