Fleetwood Digital
ATU-100-0A 1.8-55MHz Automatic Antenna Tuner (1800mAh Battery)
ATU-100-0A 1.8-55MHz Automatic Antenna Tuner (1800mAh Battery)
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Quick Specs
Quick Specs
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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
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🔋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.
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🖥️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.
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⚡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 |
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