41 in stock
Overall rating: 4.814815 / 5 from 27 reviews.
Review topics: [].
"The CHA URT1 is built fairly tough though I doubt water resistant or water proof. For the money, there are better (smaller, lighter, cheaper) tuners that can be rigged into a water tight Pelican case for environmental protect, battery power, and physical durability."
"I use my tan URT-1 mounted on a portable Will-Burt Expedition series mast w/EZ Raze at 30 feet and coax feed a 25 foot telescopic whip with 11, 16. 5, 33 and 42 foot fanned counterpoises, a 20M Delta loop beehive fed at the 30 ft apex and coax fed dual 25 foot whip V dipole. So far, this tuner has tuned everything I have tried. I think it is a good investment. Funny thing, my URT-1 has the labeling oriented so that the beehive connection is up. I like that this unit is Chameleon rugged."
"Good delivery. The product has nit been tested yet."
"With a 25 ft vertical radiating element and a 16ft radial hanging vertically from our deck it tuned ham bands between 10m through 80m and made several contacts hunting 20m POTA. A choke was used at the coax to tuner connection."
"Really well constructed. Has worked as advertised and is a great addition to my low power activities. 👍🙂"
"I have not used the tuner in anger, but I have hooked it up with a fairly easy load (42’ and 8. 5’, fed through a 4:1) and it tunes up 80-10 just fine. The documentation, however, describes some other revision of the control box (one that doesn’t have a “complete” led), and it’s totally unclear what that led even means. It’s not what you would like, which is a led that lights when a tuning sequence begins and extinguishes when it ends (either by succeeding or giving up). It just seems to flash when the tune button is released. I thought that it might flash when the tuning sequence ends, but I have never seen a delay before the flash, even when I do deliberate things to force what should be a long tuning sequence."
"The URT-1 makes a good Chameleon Antenna a great antenna. As a big fan of tuners at the antenna, the URT-1 makes it easy to do at home or in the field. I power mine from Anderson power poles on my go-box and can carry the tuner, controller (bias-T) in my Chameleon sling pack with components of the Tactical Delta Loop. How nice to get nearly 1:1 SWR from 75m through 10m!"
"This tuner just works. Best investment for my kit in awhile."
"Great piece of equipment and a great add-on to my antenna network !"
"URT1 is Awesome and so is Chameleon! There was a small disconnect when I ordered. They reached out to me and it was corrected quickly. I got my URT1 right away. Great company!"
URT1 · Tuners & Matching
A tuning, matching, analysis, or remote-control device for a documented RF system.
Why operators make room for it
Field efficiency improves when tuning and analysis become a quick verification step instead of a troubleshooting event after everything is raised.
Chameleon Antenna proudly introduces the CHA URT1 – Universal Remote Tuner 1 , a rugged and highly versatile automatic antenna tuner designed to efficiently match a wide variety of antennas across the HF and 6-meter spectrum.
For the operator, the value is confidence: a measurable, repeatable path from antenna assembly to a verified match within the device and system limits.
Quick product reference
Operator decision support
See what this product is best suited for, what the documented setup needs, and the boundaries to confirm before deployment.
Field efficiency improves when tuning and analysis become a quick verification step instead of a troubleshooting event after everything is raised.
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HF: 125W SSB/CW
6M: 100W SSB/CW
Chameleon Antenna proudly introduces the CHA URT1 – Universal Remote Tuner 1, a rugged and highly versatile automatic antenna tuner designed to efficiently match a wide variety of antennas across the HF and 6-meter spectrum.
The CHA URT1 is engineered to work with almost any antenna configuration, including random wire antennas, vertical antennas, dipoles, inverted-V installations, and other non-resonant antenna systems.
By installing the tuner directly at or near the antenna feedpoint, the URT1 minimizes feedline losses caused by high SWR and significantly improves overall system efficiency.
Whether used for portable field operations, emergency communications, base station installations, or stealth HOA setups, the URT1 provides fast and reliable automatic matching from 160 meters through 6 meters.
Many antenna tuners are installed next to the radio inside the shack, which means the coaxial feedline between the radio and the antenna still carries a high SWR signal when the antenna is not resonant.
When this occurs:
The CHA URT1 eliminates these problems by placing the tuner directly at the antenna feedpoint.
Instead of correcting the mismatch inside the shack, the URT1 matches the antenna where the mismatch actually occurs. This results in:
This architecture follows the same philosophy used in professional and military communications systems, where efficiency and reliability are critical.
The CHA URT1 is designed to work with virtually any HF transceiver and antenna system without requiring radio-specific control cables.
The system consists of two components:
A rugged weather-resistant remote tuner installed at or near the antenna feedpoint. This unit contains the automatic impedance matching network.
Installed near the transceiver, the coupler sends both RF and DC control signals through the same coaxial cable, eliminating the need for additional control cables and simplifying installation.
The CHA URT1 is designed for operators who require flexibility and reliability from their antenna systems.
It is particularly effective when used with:
Because the tuner is located at the antenna feedpoint, operators can use a single antenna across multiple bands without requiring multiple resonant antennas.
Digital modes such as FT8, RTTY, PSK31, VARA HF, Olivia, and JS8Call operate with a very high duty cycle, meaning the transmitter produces continuous RF output for extended periods.
Unlike SSB voice transmissions where power fluctuates with speech, digital modes often transmit near full carrier power continuously.
Operating at excessive power in digital modes can cause several issues:
For these reasons, Chameleon Antenna recommends limiting digital mode operation to a maximum of 30 watts when using the CHA URT1. This ensures reliable operation while protecting both the tuner and the transceiver during long digital transmissions.
WE RECOMMEND INSTALLING AN RFI CHOKE AT THE FEEDPOINT OF THE TUNER.
An RFI choke helps prevent common-mode RF currents from traveling down the coax shield. This improves tuning stability, reduces RF interference in the shack, and enhances overall antenna system performance.
If you are installing a lightning arrestor inline with the CHA URT1, you must use the following model:
Morgan RF Systems M-303U-PP Coaxial Lightning Arrestor
Using the correct arrestor ensures proper RF performance while maintaining the DC and control signal path required for proper tuner operation.
If you are planning to use more than 100 feet (30 meters) of coaxial cable with the CHA URT1 Universal Remote Tuner, please be aware of the following limitation.
Due to the voltage and current requirements of the tuner and the resistance introduced by long coaxial cable runs, the power delivered through the coax may experience voltage drop or insufficient current delivery, which can result in improper tuner operation or failure to activate.
12–14V DC @ 1A
When using longer coaxial cables—especially RG-58, RG-8X, or similar cables with higher DC resistance—the power delivery from the coupler unit to the remote tuner can degrade significantly.
This can lead to:
The CHA URT1 system includes:
Frequency Range:
1.8 – 54.0 MHz
HF: 125W SSB/CW
6M: 100W SSB/CW
Digital Modes: 30W recommended maximum
Tuning Power Range: 0.5 – 15W
Maximum Recommended Tuning Power:10W
Full tune: approximately 5 seconds
Memory tune: approximately 0.1 second
16,000 stored frequencies
12 – 14 VDC, 1A
14°F (-10°C) to 140°F (60°C)
Dimensions: 8.8 × 5.1 × 1.8 inches
(223 mm × 130 mm × 45 mm)
Weight: 38.8 oz (1100 g)
Dimensions: 5.0 × 4.1 × 1.7 inches
(128 mm × 105 mm × 43 mm)
Weight: 14.1 oz (400 g)
Current Consumption: 500 mA or less
The URT1 uses magnetic latching relays. Once tuning is completed, the relays latch and power is removed, significantly reducing battery drain—an important feature for portable and field operations.
The tuned frequency is stored in memory. When returning to a previously tuned frequency, the URT1 recalls the stored settings and completes tuning almost instantly.
1. Easy returns
Eligible products may be returned within 30 days under the published policy and authorization process. A 20% restocking fee may apply; international orders and Final Sale items are not eligible.
2. One-year limited warranty
Qualifying defects in materials or workmanship are covered under the complete published warranty terms.
3. The right help
For antenna setup or performance questions, visit Technical Support. For order-status questions, email orders@chameleonantenna.com. Read the Warranty, Returns & Service guide before shipping anything.
Where can I find setup guidance?
Open the Chameleon Knowledge Base from this page for product manuals, application notes and documented configurations.
Do you ship internationally?
Available destinations and charges are shown during checkout. International orders may take longer and can be subject to destination-country taxes, duties or carrier procedures outside our control.
How do I get help?
For technical product questions, visit Technical Support. For an existing order, email orders@chameleonantenna.com from the order email and include the order number.
Documented configuration guide
Choose the antenna family and feed method that match your operating objective. Each path below comes from the June 12, 2026 Applications Guide and remains subject to the current URT1 operator manual and product-specific instructions.
Coaxial-fed antenna
Connect the antenna feed line to the Tuner Unit’s ANTENNA connector. Leave the top Beehive connector unused.
Single-wire or direct-fed antenna
Connect the radiator as documented and provide the required ground or counterpoise at the Ground connector. Leave the ANTENNA connector unused.
Showing all 10 documented application paths.
Place the Tuner Unit at or near the antenna feedpoint to keep the high-SWR portion of the system short, or use it locally when the application requires an indoor tuner.
Use the weather-resistant Tuner Unit outdoors at the radiator end for an EFRW, long wire, ground-mounted vertical, or another specifically documented single-wire application.
Replace the broadband matching transformer with the URT1 and optional URT1 MB to create a remotely tuned portable vertical using the documented whip, mount, and return-current system.
Use the MPAS 2.0 antenna wire as a remotely tuned end-fed configuration with the URT1 at the feedpoint and the return-current path required by the selected geometry.
The guide presents a remotely tuned 80–6 m BV path that removes routine whip-length and loading-coil adjustment from the deployment procedure.
Add the URT1 at the feedpoint side of the documented TDL HYBRID configuration to reduce high-SWR feed-line loss while retaining the matching transformer.
Replace the matching transformer with the URT1, URT1 MB, and Blank Adapter for the guide’s directly tuned TDL configuration.
Replace the matching transformer with the URT1 to create a remotely tuned end-fed random-wire application using the selected EMCOMM radiator and documented return-current path.
Replace the SKYLOOP matching transformer with the URT1 at the feedpoint for the guide’s remotely tuned horizontal loop path.
Install the Tuner Unit near the rear antenna mount and the Coupler Unit near the operator for a compact remotely tuned vehicle antenna.
Chameleon Operating Platform
Continue from this product page into verified Chameleon guidance and decision tools.
Official Chameleon guidance Recommendations are limited to documented product relationships; unverified combinations are not presented as supported.
Official Chameleon Knowledge Base
Use the official Chameleon Knowledge Base to understand installation, configurations, compatibility, troubleshooting, and engineering before you deploy.
