LDG Z-100A Automatic Antenna Tuner
Best portable antenna tuner for battery-powered field radio operations.
The LDG Z-100A Automatic Antenna Tuner is a compact and lightweight solution for amateur radio operators, especially for portable or mobile use. It operates with zero power in standby, making it ideal for battery-powered setups like Go-Boxes or backpack adventures. This tuner boasts LDG's signature wide 10:1 SWR tuning range, capable of matching various antennas including dipoles, verticals, and end-fed wires. Enjoy seamless integration with most HF radios up to 125 watts SSB, featuring 2,000 memories for instant frequency recall and including multiple interface cables for major brands.
$189.99
Owner Satisfaction
4.6
/ 5
Category Rank
187
/ 1073
#187 in Communication Radio Accessories
Price vs Category Average
+90%
Above average
Transmit Power
12510075850
/ watts SSB, watts CW, watts FT-, watts digital
Who it's for
- Operators seeking fast, effortless antenna tuning
- Field enthusiasts needing lightweight, space-saving gear
- Hams requiring versatile matching for diverse antenna systems
Who should skip it
- Backpackers needing a self-contained, battery-powered solution
- Users preferring precise digital power and SWR readouts
- Operators using balanced antennas requiring integrated baluns
Performance breakdown
Portability
Compact and lightweight design perfect for field operations and backpack setups.
Power Efficiency
Zero-power standby and latching relays maximize battery life for remote adventures.
Tuning Versatility
Wide 10:1 SWR range handles diverse antenna types with impressive ease.
Integration Ease
Plug-and-play setup with included cables makes installation straightforward for most radios.
Memory Recall
Two thousand memory slots ensure near-instant tuning on your favorite frequencies.
Power Handling
Reliable for standard HF operation but limited for high-power linear amplifiers.
Key Specs
Transmit Power
125 watts SSB, 100 watts CW, 75 watts FT-8, 50 watts digital
Tuning Range
10:1 SWR, 20uH, 1300PF
Voltage
13.8 Volts DC
Current Draw
250 mA tuning, 20 mA idle
Dimensions
157.48mm x 44.45mm x 177.8mm
Weight
680.39 grams
Warranty
24 months
Connector Type
Multi-Pin
Features
- Zero-power standby for ultra-low consumption
- Matches diverse coax-fed antennas
- 2,000 memories for instant recall
- Plug-and-play integration with HF radios
- Latching relays conserve battery power
- Includes cables for major radio brands
- Wide 10:1 SWR tuning capability
- Ideal for portable and mobile use
What customers say
The LDG Z-100A Automatic Antenna Tuner is highly regarded for its exceptional reliability and ease of use, making it essential for low power amateur radio operators. Users consistently praise its speed, achieving near instant SWR matches across various bands, which simplifies operation significantly. Its compact design is a major benefit for both fixed stations and portable setups. The tuner handles a wide range of antennas effectively, bringing challenging loads to a usable SWR. While it requires external power, the consensus is that the Z-100A offers outstanding performance and robust quality for its price, establishing it as a recommended workhorse for many enthusiasts.
Know before you buy
The Z-100A includes interface cables for most major radio brands, allowing for plug-and-play integration. It is designed to work with almost any HF transceiver capable of outputting up to 125 watts.
The tuner uses latching relays that hold their position without requiring continuous current. This minimizes battery drain, making it an excellent choice for Go-Boxes or field operations where power conservation is critical.
Yes, but you must respect the power limitations. While it handles 125 watts for SSB, the limit for digital modes like FT-8 is 75 watts to prevent overheating the internal components.
Yes, the Z-100A features 2,000 internal memories. Once you tune a specific frequency, the unit stores the settings and will recall them instantly the next time you return to that frequency.
The tuner is designed for coax-fed antennas, including dipoles, verticals, and end-fed wires. Its 10:1 SWR tuning range provides the flexibility needed to match a wide variety of common amateur radio antenna configurations.
While it is optimized for portable and mobile setups due to its compact size and low power draw, it functions perfectly well in a permanent base station environment. Just ensure your total transmit power does not exceed the specified limits for your chosen mode.
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