Iain, VK5ZD, posted some interesting information regarding the internal construction of the Comet CHA-250B broadband vertical antenna. The notes can be found here. Following e-mail discussions with other amateurs, I now understand that the Comet HA-750BL Comet VA-250 use similar principles of operation, and are based upon a design which.
- Comet Cha-250b Antenna Manual Free
- Comet Cha-250b Antenna Manual
- Comet Cha-250b Antenna Manual Model
- Comet Cha-250b Antenna Manual Instructions
The Comet CHA250B broadband vertical antenna will amazingly cover 75/80 meters through 6 meters with no gaps! Transmit range is 3.5-57 MHz and receive range is 2-90 MHz. SWR <1.5:1. This 23.5 foot vertical requires no radials and weighs only 7.1 lbs. The antenna consists of five sections of aluminum tubing that slide into each other. The bottom section has the matching network built-in. Only two simple measurements are required during the easy assembly. It can handle 250 watts SSB and 125 watts CW/FM. SO-239 input. Mounts on a 1.2 to 2.8 inch mast (not supplied). Rated for 67 MPH (108 KPH) wind survival. The recommended mounting height is 8 to 10 feet from base of the antenna to ground. Best performance is realized when installed 33 feet above ground.
Comet offers the optional CP45 mast and optional YS45 tripod for using the CHA250B in the field.
Taking a look at this dynamic HF Vertical antenna from Comet. It's not perfect, but it's better than you would think. The Comet HFJ-350M, Portable 9-Band (6M-80M) or FHJ-350M Toy-Box, Portable 10-Band (6M-160M), 1/4 wave base loading telescopic antenna for HF through 6M. Frequency can be changed by means of shorting plug. Compact (less than 15in) portable antenna for your SOTA, POTA or other operation where a small high performance antenna is required.
Please see the June issue of CQ Amateur Radio for a review of this product (pages 22-24).
Reminder ... as with all large antennas; please install this antenna in an open space at least twice the length of the antenna away from utility lines. Click here for more safety tips.
This item cannot ship 'flat rate'. We can quote shipping to your location.
Comet Cha-250b Antenna Manual Free
HF Omnidirectional Vertical Comet CHA-250B base antenna 6 to 80 meter for Amateur Radio Communication. Comet CHA250B HF/VHF vertical antennas make the most of a tight situation! When you have too little space and too much regulation, Comet CHA250B HF/VHF vertical antennas can offer easy assembly and setup, no ground radials, no tuning or adjustments, and VSWR under 1.6:1 from 3.5 MHz to 57 MHz! Plus, the 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. UHF female connector.
Comet Cha-250b Antenna Manual
| Features | |
| Features | Broadband: TX 3.5 – 57MHz RX 2.0 – 90MHz VSWR: 1.6:1 or less Max Power: 250W SSB Impedance: 50 Ohm Length: 23’5″ Weight: 7 lbs 1 oz Connector: SO-239 Mast Size Required: 1″-2″ diameter Max Wind Speed: 67MPH |
- Brand: Comet
- Product Code: COMET
- Availability: In Stock
1,254.34$
0 review(s) / Write a review
Latest
Comet Cha-250b Antenna Manual Model
Comet Cha-250b Antenna Manual Instructions
FT-3DR Yaesu, dual band portable ham radio
The Yaesu FT3DR 2m / 70cm Dual Band Portable Ham Radio provides reliable 5W RF output power in a l..
829.95$
IC-V86 Icom, VHF portable ham radio 7 W
The Icom IC-V86 144 MHz FM portable transceiver give you more audio, more RF power, more coverage ..
341.24$