ATU-100 HF Auto Tuner 1.8Mhz - 30Mhz (Daz Studio)
I recently purchased an ATU-100 for my Bommerang (A) CB Antenna. I though I would give it a try!
The unit was ordered from Amazon and it arrived very quickly, thanks!
First impressions were very good, the unit seems to be well made with a very robust case. I soon had power connected (12V) and the antenna coax cable to the radio. For the initial tests I had the Anytone5555 transceiver connected. With the tuner on and in "Auto" mode a carrier of 5W produced almost instant, and very quiet, tuning on all bands. Initial impressions were great!
The unit I have came with firmware version 3.2, looks like most users are happy with this versions, versions before 3.0 had a few issues. I love the digital readout that gives you power, SWR while tuning and then shows you the inductance (L) and capacitance (C) needed to tune the antenna, impressive!
I opened up the tuner to look at the build quality and components inside, again I was pleasantly surprised, everything seems well made with really good solder joints, unlike some equipment I have seen like MFJ where I normally end up redoing most of the solder joints.
I spent the next few days using it with a few different radios and antennas, the tuning was always quick and produced a very low SWR. The power output, SWR and efficiency display on the little screen is also useful. Overall the tuner works really well!
Specs:
Power supply voltage: 10-15VDC
Maximum current consumption: 400mA
Maximum working power: 100W
Maximum possible measured power: 150W
Minimum power required to start tuning: 5W
Minimum possible measured power: 0.1W
Measurement steps for power 10W: 0.1W
Measurement steps for power 10W: 1W
Power measurement accuracy: 10%
Maximum installed inductance: 8.53uh
Minimum installed inductance step: 0.05uh
Maximum installed capacitance: 1869pf
Minimum installed capacitance step size: 10PF
Number of panel buttons: power, direct, automatic, functional
Display: 0.91 led
Color: black
Material: aluminum alloy
