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The Yaesu ATAS-120 Active Tuning Antenna System provides HF/VHF/UHF coverage with automatic motorized tuning. It is the successor to the popular ATAS-100. Utilizing control signals from the transceivers microprocessor received via the coaxial cable, the ATAS-120's internal motor adjusts the radiator length for best SWR. The ATAS-120 covers the 7, 14, 21, 28, 50, 144 and 430 MHz amateur bands and is compatible with the FT-100, FT-847, FT-857, FT-897 and FT-991A.
If you are living in an apartment, townhouse or other location where you do not have space to install an antenna you might consider the ATAS-120 along with the optional ATBK-100 Antenna Base kit. This VHF/UHF counterpoise kit will get you on the air fast.
|Frequency Range||7/14/21/28/50/144/430MHz Amateur Bands|
|Input Impedance||50 Ω|
|Max Input Power||120W 7/14/21MHz (SSB, CW; 50% duty cycle)
100W 28MHz, 50MHz, (FM & RTTY)
50W 144/430MHz, (SSB, CW, FM, RTTY)
|Matched SWR||Less than 2.0:1|
|Height (approx)||1.4 to 1.6m, depending on frequency selected|
|Weight (approx, g)||900|
(1 reviews)Write a review
Better than you might think ...
Firstly this is never going to be a replacement for a decent long wire, dipole or beam! Using the ML&S mount i bolted it to the rollcage of my land rover and drove NYC to SFO. A trim of 4200miles both on and off road. The antenna was grounded using a 1/2 inch thick battery -ve strap and tuned up with no issues at all. 40M was very active and I was easily able to contact a wide variety of states. Back in the UK i live in a ground floor flat. I bolted the antenna mount to the side of the radiator and have being doing a bit of JT65 stuff ... I've put signals into the US and SouthAfrica on 20/40M. All in all it works, i can't have any external antennas and this gets me on the air.