Fleetwood Digital
ATU-100-0A 1.8-55MHz Automatic Antenna Tuner (1800mAh Battery)
ATU-100-0A 1.8-55MHz Automatic Antenna Tuner (1800mAh Battery)
Couldn't load pickup availability
Why Buy?
Why Buy?
Not quite sure if this is right for you? Contact Us for expert advice!
Quick Specs
Quick Specs
Scoll down for more information about this item.
The ATU-100-0A (1.8-55MHz) Mini Automatic Antenna Tuner is a compact, open-source-based matching unit designed to perfectly couple 50-ohm transceivers to end-fed wires, dipoles, and other non-resonant antennas. Enclosed in a rugged aluminum extrusion, this specific "0A" revision is fully pre-built for portable operations with an integrated 1800mAh lithium battery and is backed by a 90-Day Canadian Warranty.
⚠️ Critical Tuning Power Limits
The internal hardware requires a minimum of 5 Watts of continuous RF carrier (AM, FM, or CW) to trigger the relays and calculate a match. Tuning with less than 5W will cause the tuner to fail or click endlessly.
Maximum Tuning Limit: NEVER press the TUNE button while transmitting 100 Watts! You must lower your radio's output power to between 10W and 20W before initiating a tune cycle. Tuning at full power can arc and permanently weld the internal relay contacts. Once a match is found, you may safely increase your transmit power back up to the 100W maximum.
Performance & Engineering Highlights
-
🔋Internal 1800mAh Battery & Canadian Warranty Fully self-contained for field and POTA operations. Features a built-in 3.7V 1800mAh lithium cell that charges via a standard front-panel USB port. Supported by a 90-Day Canadian Warranty.
-
🖥️Real-Time OLED Display The high-contrast front screen provides an instant readout of Forward Power (PWR), Standing Wave Ratio (SWR), and the exact Inductance (L) and Capacitance (C) values applied by the tuner.
-
⚡1.8 to 55 MHz Coverage Broad frequency support for matching various wire elements and dipoles across the entire HF spectrum and the 6-meter band.
-
🔌Stacked SO-239 Connectors Equipped with dual rear-mounted SO-239 (UHF Female) connectors for straightforward, reliable in-line routing between your transceiver and antenna feedline.
Technical Specifications
| Product Model | ATU-100-0A |
|---|---|
| Frequency Range | 1.8 MHz to 55 MHz |
| Maximum Working Power | 100 Watts |
| Tuning Power Required | 5W Minimum / 10W - 20W Maximum (During Tune Cycle) |
| Internal Battery | 3.7V, 1800mAh Lithium-Ion (USB Charging) |
| Display Interface | OLED (PWR, SWR, L, C Readouts) |
| RF Connectors | Dual SO-239 (UHF Female) |
| Dimensions | 160mm x 90mm x 40mm (6.30" x 3.54" x 1.57") |
| Warranty Protection | 90-Day Canadian Warranty |
Description
The ATU-100-0A (1.8-55MHz) Mini Automatic Antenna Tuner is a compact, open-source-based matching unit designed to perfectly couple 50-ohm transceivers to end-fed wires, dipoles, and other non-resonant antennas. Enclosed in a rugged aluminum extrusion, this specific "0A" revision is fully pre-built for portable operations with an integrated 1800mAh lithium battery and is backed by a 90-Day Canadian Warranty.
⚠️ Critical Tuning Power Limits
The internal hardware requires a minimum of 5 Watts of continuous RF carrier (AM, FM, or CW) to trigger the relays and calculate a match. Tuning with less than 5W will cause the tuner to fail or click endlessly.
Maximum Tuning Limit: NEVER press the TUNE button while transmitting 100 Watts! You must lower your radio's output power to between 10W and 20W before initiating a tune cycle. Tuning at full power can arc and permanently weld the internal relay contacts. Once a match is found, you may safely increase your transmit power back up to the 100W maximum.
Performance & Engineering Highlights
-
🔋Internal 1800mAh Battery & Canadian Warranty Fully self-contained for field and POTA operations. Features a built-in 3.7V 1800mAh lithium cell that charges via a standard front-panel USB port. Supported by a 90-Day Canadian Warranty.
-
🖥️Real-Time OLED Display The high-contrast front screen provides an instant readout of Forward Power (PWR), Standing Wave Ratio (SWR), and the exact Inductance (L) and Capacitance (C) values applied by the tuner.
-
⚡1.8 to 55 MHz Coverage Broad frequency support for matching various wire elements and dipoles across the entire HF spectrum and the 6-meter band.
-
🔌Stacked SO-239 Connectors Equipped with dual rear-mounted SO-239 (UHF Female) connectors for straightforward, reliable in-line routing between your transceiver and antenna feedline.
Technical Specifications
| Product Model | ATU-100-0A |
|---|---|
| Frequency Range | 1.8 MHz to 55 MHz |
| Maximum Working Power | 100 Watts |
| Tuning Power Required | 5W Minimum / 10W - 20W Maximum (During Tune Cycle) |
| Internal Battery | 3.7V, 1800mAh Lithium-Ion (USB Charging) |
| Display Interface | OLED (PWR, SWR, L, C Readouts) |
| RF Connectors | Dual SO-239 (UHF Female) |
| Dimensions | 160mm x 90mm x 40mm (6.30" x 3.54" x 1.57") |
| Warranty Protection | 90-Day Canadian Warranty |
Downloads & Resources
Purchase With Confidence
Questions & Answers
Have a Question?
Be the first to ask a question about this.