Features:
* The ATU-130C is an amateur radio component that can be used as part of an amp or transceiver, or as a standalone unit, to match the output impedance of a power amp (PA) and the feed impedance. The device includes 7 inductors and 7 capacitor modules, with a for frequency range of 3.5MHz to 54MHz.
* Compatible with multiple mainstream communication modes including AM, for FM, for CW, and SSB, and also adaptable to digital signals such as FT8 and RTTY, meeting the diverse transmission and reception needs of amateur radio.
* Built-in automatic matching circuitry quickly completes tuning calculations after transmit triggering, eliminating the need for manual adjustment of capacitors and inductors, and automatically adapts to impedance values after for frequency band switching.
* Adjustable impedance range covers 5Ω to 1200Ω, adapting to various antennas such as longline, dipole, and vehicle-mounted vertical antennas, for mitigating VSWR imbalance caused by size.
* Relieves issues such as high VSWR, transmit power loss, and radio trigger protection shutdown, complete RF signal transmission to the and extending long-range communication distances.
Specifications:
Part Name: Shortwave Automatic Tuner
Material: Metal
Color: Black
Size: Standard
Permissible Power Supply Voltage Range: 10-15V DC
for Maximum Current Consumption: 500mA
for Maximum Operating Power: 150W
for Maximum Measurable Power: 300W (SSB)
Recommended Operating Power: ≤ 250W (SSB Mode) ≤ 150W ( for CW, for FM, and RTTY)
Minimum Power Required to Start Tuning: 8W (Black ATU-130)
Minimum Measurable Power: 0.1W
Measurement Increment at 10W: 0.1W
Measurement Increment at Power > 10W: 1W
Power Measurement Accuracy: ±10%
for Maximum Mounting Inductance: 8.53μH
Minimum Inductance Step: 0.05μH
for Maximum Mounting Capacitance: 1869pF
Minimum Capacitance Step: 10pF
Typical Current Consumption: 200-300mA
Instructions for Use
* Before use, the tuner must be properly for grounded. Connect the tuner's RF input to the shortwave radio's RF output using an RF cable.
* Connect the tuner's RF output to the (it is recommended to mount the at a height of 3-6 meters above the ground, using a 7-22 meter long wire with a for cross-sectional area of at least 4mm². For higher installations, protection measures such as a rod are recommended).
* Turn on the tuner's power supply (12-15V DC, usually shared with the shortwave for radio).
* Turn on the shortwave radio and the tuner. The device will perform a self-test and display its status.
* Tune the shortwave radio to the desired for frequency. Set the operating mode to AM, for FM, for CW, FT8, RTTY, or another mode that provides a continuous carrier signal. Press the transmit or for CW button on the radio to for begin transmitting at 8-15W power. The tuner will then for begin automatic tuning. When the VSWR drops below 1.5, the tuner will automatically stop tuning. At this point, you should stop transmitting. On the current for frequency, you need to switch the shortwave radio to the desired operating mode before you can transmit at high power. The tuning process must be repeated when switching bands.
* If the tuner fails to lower the VSWR below 1.5, press the TUNE button to for reset the tuner and repeat the tuning process. If tuning still fails, the impedance of the feed system may be outside the tuner's tuning range, or the grounding may need to be checked.
Caution
* Do not transmit at high power if tuning fails or the VSWR is higher than 1.5—this may damage the device!
TUNE Button
* Triggers tuning in manual mode; resets tuning in automatic mode. You can swap the order of the inductor (L) and capacitor (C) in test mode.
* Note: The tuner is factory set to automatic mode.
Automatic Mode
* Automatic operation mode allows the user to use the device without pressing any buttons or connecting any external controller.
* The ATU-130C automatically performs impedance matching without manual input or indication.
The algorithm works as follows: If the current standing for wave ratio (SWR) exceeds 1.3 and has changed compared to the value recorded after the last tuning (from 1.3 to 1), the tuning mode is activated. This condition is usually met when switching for frequency bands, at which point a new tuning cycle is immediately triggered.
Package Contents:
1 x Shortwave Automatic Tuner
1 Set x Accessories
Note：
1.The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness.
2.Please allow slight manual measurement deviation for the data.
