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Comet CHA-250HD All Band Vertical Base Antenna 3.5–57 MHz Wideband HF/VHF/UHF Fiberglass Antenna 250W PEP with Transformer Matching Network – 23 Feet Weather-Resistant Design

  • Based on 17 reviews
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Availability: Only 6 left in stock, order soon!
Fulfilled by Amazon
Arrives Tuesday, Oct 20
Order within 18 hours and 22 minutes
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Features

  • The Comet CHA-250HD All Band Vertical Base Antenna provides continuous 3.557 MHz coverage without manual tuning or external antenna tuners, offering seamless HF, 6m, 10m, 12m, 15m, 17m, 20m, 30m, 40m, and 80m band performance.
  • Designed with a built-in transformer matching network, this antenna maintains consistent impedance and low SWR across the frequency range, ensuring reliable transmit and receive performance for amateur and emergency operations.
  • Constructed from high-quality fiberglass with a reinforced weatherproof coating, the CHA-250HD resists UV damage, moisture, and corrosion, making it ideal for long-term outdoor base station installations.
  • The CHA-250HDs efficient wideband design eliminates the need for ground radials or multiple antennas, offering a low-profile solution that performs exceptionally well even in restricted-space environments.
  • Rated at 250 watts PEP and featuring an SO-239 connector, this 23-foot vertical antenna delivers durable, all-weather operation for serious amateur radio operators and emergency communications setups.

Description

The Comet CHA-250HD All Band Vertical Base Antenna is a professional-grade wideband antenna engineered for continuous operation from 3.5 to 57 MHz, covering the most popular amateur radio bands including 80m, 40m, 20m, 15m, 10m, and 6m. Unlike conventional designs, the CHA-250HD does not require external tuners or radials, simplifying installation while maintaining excellent broadband performance. Built with a durable fiberglass radiating element and corrosion-resistant aluminum hardware, the CHA-250HD is designed to withstand harsh weather conditions year-round. Its factory-integrated transformer matching network provides efficient impedance matching across multiple bands, minimizing SWR and maximizing signal transfer efficiency. Standing at approximately 23 feet tall, the antenna offers impressive coverage in a compact, vertical profile suitable for roof, tower, or mast mounting. Rated for 250 watts PEP, it supports a wide range of transceivers and amplifiers while maintaining low-loss operation for both transmitting and receiving. Ideal for amateur radio base stations, emergency communication setups, and field operations, the Comet CHA-250HD delivers the reliability and performance demanded by professionals. Whether you’re upgrading your station or installing a versatile all-band antenna for the first time, this model offers dependable performance, low maintenance, and world-class construction.

Antenna: All Band Vertical Base Antenna


Brand: Generic


Color: white


Impedance: 50 ohm


Product Dimensions: 23"L x 2.5"W x 1.98"H


Manufacturer: Generic


Number of Packs: 1


Unit Count: 1 Count


Number of Items: 1


AntennaDescription: All Band Vertical Base Antenna


Brand: Generic


Manufacturer: Generic


Number of Packs: 1


Unit Count: 1 Count


Number of Items: 1


Model Number: CHA-250HD


Mfr Part Number: CHA-250HD


Warranty Description: 1 YEAR


Impedance: 50 ohm


Color: white


Item Dimensions L x W x H: 23"L x 2.5"W x 1.98"H


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Tuesday, Oct 20

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Top Amazon Reviews

    • Easy to assemble, low SWR out of the box.
Review Image by AF7UM
I assembled the antenna inside my house, (be sure and have plenty of room for a 22' antenna) and took it outside to a waiting tripod. Tightened it up, connected the coax, and headed for the station. Fired up the radio, amp and tuner, set an output of 15w on 3980khz to start, and keyed the mic expecting to hear the tuner click and whir away while it computed a decent SWR. I was happily surprised to see the SWR alternating between 1.1and 1.0 without any intervention by the tuner! Set up for 40m and got nearly the same results with an SWR of 1.3. Moving to 20m, the SWR dropped to a stock solid 1.0! The tuner never engaged. I have a limited space location and I was hesitant to try a vertical since in the past I'd always been a big fan of dipoles but this antenna has made a believer out of me! Well done, Comet! My only advice? Pay attention to the measurements of the tubing when assembling. A little time with a tape measure could save you a lot of time tuning the antenna later. ... show more
Reviewed in the United States on September 12, 2024 by AF7UM
    • It performs very well for HF
It was delivered in a timely manner
Reviewed in the United States on April 2, 2026 by Melody Owen
    • Great Compromise Antenna-Absolutely HORRENDOUS SELLER!
The antenna is lightweight, easy to install and gives surprisingly good results, particularly on 20 meters. I would have given it two more stars for function and build but I need to WARN YOU OFF THIS SELLER! 30 days ago I ordered another antenna (by Diamond) that is also a"no radial vertical". It was to be DELIVERED in 3-4 days at no extra charge. I didn't know that the seller was "Ham City" not Bezos, under what is called a a partner-seller program. They claimed it was shipped out w/in regulation time period. The Amazon supplied tracking information stated that it was tendered from the partner (in this case, from Ham City to the USPS) four days later. The USPS supplied tracking said they were Still Waiting for the package 18 days later. In fact as I write this, the carrier /USPS still has not received the package! Ham City swore up and down that the problem was the postal service, despite the fact that the USPS never received it from the them. Very long story short, Amazon finally refunded the purchase price. After 6-7 Amazon system message to Ham City, they never admitted fault despite multiple documentary proofs that it was never even tendered to the USPS. They finally said, and I'm politely phrasing their replies, that I "got my money back- why am I complaining". After 40 years in amateur radio, my experience is that this type of customer service is really atypical. OK, and this is MY Bad, I decided to buy the Comet-250 which as it turns out, will be a better match for my QTH limitations. Unfortunately, I failed to note that the seller was also Ham City! Yes, I'm an idiot! It was also due to be delivered in 4 days without extra charge. I should also note that Ham City is only 300 miles from my home. Not like it's coming from the other side of the country. They ordered the label two days after I paid (USPS data) and it still was not even delivered to the postal service for another 5 days. Finally, they got the package to the carrier. Now we're 8 days post payment and the packages journey is just beginning! Well you know how this story ends. Four or five exchanges of communication with the seller and I got totally blown off again. They absolutely didn't give a s-it! It finally moved from the sellers city to my city in one day and should be delivered tomorrow. Again, they politely told me to 🖕off (when i finally got a representative on the phone). Look, whatever antenna you choose to buy.... I STRONGLY URGE YOU TO AVOID THIS SELLER! Unfortunately, I wasn't able to find another seller on this platform for either of these products. My experiences reflect a seller who doesn't care about the buyer. It's remarkable that they that just don't give a damn and they communicate that via the Bezos seller platform with AI generated "canned comments" assuring you how very much they care and appreciate and understand your frustration. They are unable or unwilling to accept responsibility for their extraordinary poor logistics and even poorer customer service! They flat out stink, and I would prefer to use stronger language! Both products, despite being compromise antennas, work decently for QTH limitations and can get you on the air with good results. This seller on the other hand, wouldn't even get half a star. They offer a good price if you don't care when or if your purchase ever arrives and they anre unwilling to accept any responsibility for their actions and inactions. THEY JUST DONT CARE ABOUT THE CUSTOMER! And, if I could give them NEGATIVE FIVE STARS I WOULD. I strongly suggest you avoid them at all costs! VY73 to ALL de .-- --.. -... -.- ... show more
Reviewed in the United States on June 27, 2026 by RESQ-MD
    • Works as Advertised - NICELY
Based on some online reviews that I came across - after ordering - I became a bit skeptical. However, this antenna IS easy to assemble (took 10 minutes +/-), and about another 15 minutes clamping to an existing DISH roof support - removing the Dish was a bit tedious. I have contacts in Argentina, Canada, Czech Republic, Columbia, Antigua, Estonia, St Kitts, Alaska, and multiple other US states. ICOM 7300 - 100 watts - no other equipment. What more needs to be stated- this antenna works as advertised. (just a quick update, added Serbia 5148 miles - with great audio report) ... show more
Reviewed in the United States on November 1, 2024 by Verified Purchase
    • Expensive but darn well worth it...
Review Image by M. K. Sherwood
This is the answer to the need for discreet but robust antenna install. It is full wave and tunes 1:1.4 at all the amateur bands [80-6M] with excellent signal reports. It is well built, easy to assemble, has quality stainless steel mounting hardware, is very quiet to QRM a long-wire horizontally polarized antenna would have trouble with. I am sold on this vertical. 73 ... show more
Reviewed in the United States on October 5, 2024 by M. K. Sherwood
    • Great antenna for my space
Good end fed antenna.
Reviewed in the United States on May 15, 2025 by dsrtrt
    • No trap Multi-band HF vertical
It seems to be a good antenna EXCEPT for 15 meters. I get good matches on most bands thru 6 meters.
Reviewed in the United States on May 7, 2024 by Thomas C Sefranek

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