---
product_id: 6742395
title: "ATAS-120A 40 Meter through 70cm Auto Tune Motorized HF/VHF/UHF Antenna For FT-857D, FT-450DandFT-897D ATAS-120"
brand: "yaesu"
price: "€ 661.58"
currency: EUR
in_stock: true
reviews_count: 8
category: "Yaesu"
url: https://www.desertcart.it/products/6742395-atas-120a-40-meter-through-70cm-auto-tune-motorized-hf
store_origin: IT
region: Italy
---

# 40M-70cm multi-band coverage Optimized for mobile use Motorized auto-tuning ATAS-120A 40 Meter through 70cm Auto Tune Motorized HF/VHF/UHF Antenna For FT-857D, FT-450DandFT-897D ATAS-120

**Brand:** yaesu
**Price:** € 661.58
**Availability:** ✅ In Stock

## Summary

> 📶 Tune in, stand out: The smart antenna for the savvy mobile operator.

## Quick Answers

- **What is this?** ATAS-120A 40 Meter through 70cm Auto Tune Motorized HF/VHF/UHF Antenna For FT-857D, FT-450DandFT-897D ATAS-120 by yaesu
- **How much does it cost?** € 661.58 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.it](https://www.desertcart.it/products/6742395-atas-120a-40-meter-through-70cm-auto-tune-motorized-hf)

## Best For

- yaesu enthusiasts

## Why This Product

- Trusted yaesu brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Mobile-Ready Design:** Compact 5ft max length and rugged stainless steel whip built for automotive environments.
- • **Discreet Yet Powerful:** Ideal for HOA-restricted setups—small footprint, big signal reach.
- • **Effortless Auto-Tuning:** Motorized trombone section auto-adjusts antenna length with a single button press.
- • **Plug & Play Compatibility:** Specifically engineered for top Yaesu transceivers like FT-857D, FT-991A, FT-450D and more.
- • **Seamless Multi-Band Mastery:** Covers HF through UHF (40 meters to 70cm) for ultimate frequency flexibility.

## Overview

The Yaesu ATAS-120A is a motorized, auto-tuning HF/VHF/UHF antenna designed for seamless integration with select Yaesu radios. Covering 40 meters through 70cm bands, it features a compact 5-foot extendable design optimized for mobile use. Its automatic length adjustment ensures peak performance with minimal user effort, making it a top choice for professionals seeking reliable, versatile mobile communication.

## Description

Yaesu ATAS-120A Auto tuning antenna designed for the Yaesu FT-857, FT-857D, FT-450D, FT-450AT, FT-991, FT-991A, FT-450, FT-100D, FT-100, FT-891, FT-710, FT-897, FT-897D FT-891 radios, and possibly others, check your Yaesu Owner's manual for compatibility. Tune signal from radio auto adjusts the antenna length. Fully automatic w/ above listed models. Requires an Optional SO-239 thread mobile mount & coaxial cable. (not included) 2 Piece design, Motorized Lower coil section topped with stainless steel whip. Max length approx. 5 ft. For 40M - 70cm Ham Radio use. For Listed Yaesu models ONLY.

Review: Calidad de antena
Review: Ok, I am TOTALLY convinced... - Due to the local HOA (wife) I can't put up what most would call a "REAL" antenna. So, I read a few reviews, watched YOUTUBE videos and took the chance and spent some hard-earned cash on a mobile antenna. THIS IS NOT A WASTE OF MONEY!!! BEST idea I ever had! As you can see, it's on a wrought iron fence. Not sure if that makes the difference, but I'm able to use a Yaesu FT-891 at 100 watts for a very good contact on 10M FM to the east coast from San Diego, WARC bands not a problem. IN SHORT, If I can hear the other station, I can talk to them. The ATAS-120A is fantastic! (Yeah, not the surface area one would seem to need, amazes me how well this little thing works!) On the fence about buying it? I'd suggest it. Not sure if it's the fence for grounding, the ground plane which there really isn't one, or what it is, but I'm lovin' it!

## Features

- For The Following Yaesu Amateur Radio Models - FT-857D, FT-991, FT-991A FT-897D, FT-891, FT-710, FT-450D, FT-450AT, FT-450, FT-100D, FT-100, FT-857 .
- Covers HF thru UHF, Auto Self-Tuning, motorized Transceiver Mobile Antenna ( 40 Meters through 450Mhz)
- Designed for mobile (automotive) use, and Requires an Optional Suitable mobile antenna Mount & coaxial Cable.
- Has PL-259 ( "PO" , "M" ) style base thread. overall length approx 5ft max extended.
- Motorized "trombone" section Auto lengthens/shortens to tune antenna, when Yaesu radio's tune button is pressed.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B004UM9UL4 |
| Best Sellers Rank | #1,206 in Radio Antennas |
| Customer Reviews | 4.3 4.3 out of 5 stars (77) |
| Date First Available | March 31, 2011 |
| Is Discontinued By Manufacturer | No |
| Item Weight | 0.01 ounces |
| Item model number | ATAS-120A |
| Manufacturer | Yaesu |
| Product Dimensions | 37.3 x 2.4 x 3.3 inches |

## Product Details

- **Antenna:** Radio
- **Brand:** YAESU
- **Color:** Black
- **Impedance:** 120 Ohms
- **Manufacturer:** Yaesu
- **Maximum Range:** 40 Meters
- **Number of Channels:** 7
- **Number of Items:** 1
- **UPC:** 788026098729

## Images

![ATAS-120A 40 Meter through 70cm Auto Tune Motorized HF/VHF/UHF Antenna For FT-857D, FT-450DandFT-897D ATAS-120 - Image 1](https://m.media-amazon.com/images/I/419-87BumiL.jpg)

## Questions & Answers

**Q: What's the gain of this antenna?**
A: As far as I know the manufacturer has not published any gain figures. One does not get this kind of antenna to achieve gain. Its purpose is to provide a good signal in a compact package for mobile use. Also, its automatic tuning function only works with certain Yeasu products (e.g. the FT857). The ATAS 120A might theoretically have a slight dBi or even dBd gain on UHF and VHF depending on the quality of the counterpoise (grounding). However on HF amateur bands (7/14/21/28/50 mhz) it should have negative (less) gain compared to a halfwave dipole as it is essentially a compromise vertical that is shorter than 5/8ths or a quarterwave, with loading coils to compensate for the lack of electrical length. However with a good counterpoise (groundplane provided by bonding connections to the vehicle) reports indicate that it gives excellent mobile results (compared to other mobile verticals) when used in a vehicle.

**Q: I'm reading that the radio tunes the antenna. I'm about to buy the 857d BUT!! do you need to but the antenna tuner made by yaesu for this To work**
A: Most of the below answers are confusing. FT857D DOES NOT have a built in tuner. If you have a good resonant antenna no tuner is needed. There are some antennas that can tune themselves via various methods and resonance is obtained at the antenna not the radio. Almost any antenna tuner at the radio can tune many non-resonant antennas. Yaesu specifically makes a tuner that attaches to the outside of the radio but almost any automatic (I recommend) tuner will work. Ground your radio and have a good counterpoise for your antenna. Most of my antennas are resonant at frequency (most efficient) but an auto tuner is wonderful for mobile HF operation especially at the lower frequencies (ie. 160-80M) and you keep your eye on the road. JUst remember to initially tune at 5-20 watts. The yaesu antenna is not an efficient antenna but it is convenient. N8LB

**Q: Will the atas-120a tune 80 meters**
A: No, only down to 40 meter band. Google ATAS-120a to get the one-page operating guide in pdf format. It includes the operating range in the specs section.

**Q: Tough question: I intend to use this antenna as base station on my 5th floor condo HOA (inside of window) will the inside house ground be sufficient ?**
A: As a DC ground, yes it will work. You may want to add the ATBK-100 radial kit to improve the ground plane or add homemade radials to expand the ground plane. Hope this helps - 73s de KC5AJS

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by J***S on December 22, 2025*

Calidad de antena

### ⭐⭐⭐⭐⭐ Ok, I am TOTALLY convinced...
*by B***R on March 5, 2024*

Due to the local HOA (wife) I can't put up what most would call a "REAL" antenna. So, I read a few reviews, watched YOUTUBE videos and took the chance and spent some hard-earned cash on a mobile antenna. THIS IS NOT A WASTE OF MONEY!!! BEST idea I ever had! As you can see, it's on a wrought iron fence. Not sure if that makes the difference, but I'm able to use a Yaesu FT-891 at 100 watts for a very good contact on 10M FM to the east coast from San Diego, WARC bands not a problem. IN SHORT, If I can hear the other station, I can talk to them. The ATAS-120A is fantastic! (Yeah, not the surface area one would seem to need, amazes me how well this little thing works!) On the fence about buying it? I'd suggest it. Not sure if it's the fence for grounding, the ground plane which there really isn't one, or what it is, but I'm lovin' it!

### ⭐⭐⭐⭐⭐ Great antenna
*by C***S on September 14, 2025*

This thing is awesome. I have mad3 contacts from Hawaii to the east coast, Brazil, Canada, Australia on ssb and have gotten farther out on ft8. I have it mounted on my van and have a ground strap from the mount to the door.

## Frequently Bought Together

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- ATBK-100 ATBK100 Original Yaesu Antenna Base Kit for The ATAS-100 and ATAS-120A Antennas

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*Product available on Desertcart Italy*
*Store origin: IT*
*Last updated: 2026-03-06*