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Yaesu ATAS-120A
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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 and FT-897.
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.
| Specifications | ATAS-120A |
| 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 ...
Jason|09-10-2016
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.
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Yaesu VHF/UHF Antennas(1 review)£299.95(Inc VAT at 20.00%)
