Comet CHA-250HD HF/VHF Vertical Antennas

Comet CHA-250HD HF/VHF Vertical Antennas is an updated design of the popular CHA-250B vertical antennas. These antennas make the most of a tight situation! When you have too little space or too much regulation, these antennas offer easy assembly and setup, no ground radials, no tuning or adjustments, and SWR under 1.6:1 from 3.5 MHz to 57 MHz! Plus, their wide bandwidth is not only good on ham bands but on shortwave bands as well, making these antennas perfect for an SWL wanting a low-profile, all-in-one antenna.

This improved Comet CHA-250HD features a new solid whip replacing the top aluminum section for greater flexibility and less strain on the lower sections in high winds. The “magic” behind the CHA-250HD is the transformer matching section. The transformer on the original CHA-250B had smooth sides. This improved design features a heat sink to dissipate the heat created inside the transformer from the RF that enters the power feeding section rather than transmitted as RF. This is the compromise needed to create a broad-band, low SWR, multi-band HF antenna with minimal visual impact.

When you are forced to play within the antenna and space restrictions of your QTH, Comet CHA-250HD HF/VHF Vertical Antennas can provide a clear winning advantage to getting out and making QSOs!

Important: For optimal performance, this antenna should be mounted as high above the ground as possible. A minimum height of 25 feet is recommended, with 30 to 35 feet preferred for best results.

Additional Features and Specifications:

• Antenna Type: Ground Plane

• Frequency Range: Transmit – 3.5 – 57 MHz, Receive – 2.0 – 90 MHz

• Power Handling: 250 W SSB

• Impedance: 50 Ohms

• SWR: Less Than 1.6:1 Typical

• Length: 23.8 ft. (7.13 M)

• Weight: 7.11 lbs. (3.2 kg)

• Wind Survival: 67.5 MPH (108 K/Hr.)

• Mast Size: 1.18 – 2.8 in. (3.0 – 7.2 cm)