For using this antenna with other tranceivers, you need a external atas controller, e. Even an end fed wire will work much better than the atas in a fixed station application. The yaesu atas 120a mobile antenna system,designed for use with yaesu transceivers equipped with the atas system active tuning antenna system. Wide frequency coverage, outstanding receiver performance and the convenience of optional remotehead operation make the ft857d the experts choice for highperformance. The images are very instructive in explaining the inner workings of the atas100 antenna. Atas120a installationoperating instructions the is a unique mobile antenna designed for use with yaesu the transceivers equipped for the atas system, such as the ft897, ft847, ft857 and ft100100d. The atas 120a is an active tuning mobile antenna system. I was just thinking the antenna is so sensitive so to speak with swr and the tuning process.
Atas120 installationoperating instructions thank you for choosing yaesus exciting new atas 120 active tuning antenna system. Mines a few months old now, and ive taken it apart a few times to check for corrosion or other problems. The atas 25 utilizes a manual tuning system which resonates the radiating element for lowest swr without the need for expen. Yaesu ft857d 100w allband multimode mobile transceivers provide base stationtype performance from an ultracompact package thats ideal for mobile or external battery portable work. Nov 20, 2014 my vehicle mounted yaesu atas120a antenna suddenly stopped working yesterday, the antenna lowered itself right down and then wouldnt tune again or move. What are the effects on an atas120a screwdriver antenna. Whatever mount you use select should be well grounded so the drive motor can operate. Eznec modeling of yaesu atas 120a hf mobile antenna mounted on a car eznecmobileant plus mounted on the earth as a backyard, stealth, base station antenna yaesu stealth antenna and yaesustealthantpart2. This is a hangover from my days operating a yaesu atas 100 where sometimes the antenna. Book about a colony ship failing and the colonists.
The main category is antenna repair and maintenance that is about antenna repair and maintenance. Atas 25 installationoperating instructions thank you for choosing yaesus exciting new atas 25 active tuning antenna system. Yaesu atas120a with base station kit soliciting opinions. I disassembled the antenna completely today suspecting either water damage from the horror stories shown online of water ingress or a failed solder joint, neither was correct the antenna looked like new. The atas 120 is a unique mobile antenna designed for use with yaesu the transceivers equipped for the atas system.
They use a tiny motor, fed through a planatarydrive gearbox using nylon gears to drive the threaded rod, which moves a nylon follower, that because its captive, makes the coil, that extends through the end of the antenna, stick out further or less, thereby tuning the antenna by the useful inductance of the extended coil. Click on any image to get a full resolution drawing of it. There is no carrier emitted when tuning 144 or 440mhz, the antenna just retracts fully. Yaesu atbk100 antenna base kits atbk100 free shipping on. Yaesu atas120a auto active tuning antennas atas120a. The atas 120a is a adjustable mobile antenna, which can be used on several hf, vhf and uhf bands 7 mhz 450 mhz to make use of the lower hf bands, you need an good counterpoise. Yaesu ra0084400, ra0084400, replacement whip for atas 100 atas 120a. What are the effects on an atas120a screwdriver antenna with. Buy yaesu atas120a yaesu vhfuhf antennas online at.
The atas 120a utilizes a motorized tuning system which resonates the radiating element for lowest swr without the need for monoband resonating whip assemblies. Yaesus patented atas active tuning antenna system has been enhanced with the latest model. Fl21001kit mod kit for yaesu fl2100 amps improves cut off voltage. Nov 10, 2017 here are some notes about how to disassemble, clean, and assemble the yaesu atas 120a motorized screwdriver antenna. Yes, when tuning the atas on hf, a carrier is emitted and you should see a high swr and blinking warning as the atas moves. This advice can apply to any radio supporting the atas 100120 series of antennas. Yaesu active tunig mobile antenna atas120a main trading. Amateur radio information, ideas and suggestions from ham radio operator k3rrr kilo three triple r amateur radio station for fun, emergencies and preppers. Super antenna mp1lx tripod hf portable all band vertical antenna superwhip with go bags ham radio amateur. Will this significantly change the omnidirectional nature of this antenna.
Would i improve my radios performance, receive or transmit with better cable. They are typically attached to a vehicle hatch or trunk lip uhf mount not supplied. Tom daileys vintage radio sales and repair, atas antennas. When i first turned the radio on, i was a little overwhelmed by all the menu settings. The technical supplement content of this page was provided by rainer, sm5lbr. The atas 120 is a unique mobile antenna designed for use with yaesu the transceivers equipped for the atas. Yaesu atas120a antenna hf mobile multi band, atas120a. I have been using the atas 120a with a large triple mag mount ground strapped to the rear hatch bolt of the rental car i had on my last project. There are better screwdriver antennas than the atas but none work on a single button push like the atas does with the 857. Active tuning antenna system atas120a installationoperating instructions the is a unique mobile antenna designed for use with yaesu the transceivers equipped for the atas system, such as the ft897, ft847, ft857 and ft100100d. Yaesu atas 25 portable antenna system for 40m70cm view atas 25 documentationthe atas 25 utilizes a manual tuning system which resonates the radiating element for lowest swr without the need for expensive, inconvenient monoband resonating whip assemblies. If you need to bring the coax back to the house in a nonobvious manner, bring it down the trunk of a tree to the ground, lay it on the ground all the way back to the house, and use lawn staples to hold it securely down to the earth grass, thatch, whatever there is. The yaesu atas 120 active tuning antenna system provides hfvhfuhf coverage with automatic motorized tuning. Buy yaesu atas 120a 40 meter through 70cm auto tune motorized hfvhfuhf antenna for ft857d, ft450dandft897d atas 120.
We hope and trust that you will enjoy many years of enjoyable field operation with the atas 25. Never really thought about it till going over my list of things to improve. I have since sold all of my yaesu equipment and gone all icom. When used with the ft991 it will cover 40 through 6 meters. As a result, i sold my atas and have just installed a diamond sd 322 screwdriver antenna with a tunematic tm1 controller to work. Other useful information would include your experience with similar products, infomation on a product that you would purchase instead of this one, and so on. Antenna tuner or atas120a activetuning antenna system. Atas25 installationoperating instructions thank you for choosing yaesus exciting new atas25 active tuning antenna system.
Sep 18, 2010 i bought the second 857 because i wanted an easy to tune antenna for mobile hf operations and the yaesu is designed to work with the atas 120 antenna. Do not install this transceiver in a confined space such as a book case or similar unit. In the end i only ever use it on the car, and it definitely needs a very good earth. For 6 and 2 meters and 70 cm band, you can use of a optional balcony mount counterpoise kit. I use the yaesu atas120a,a 2 lbs screwdrivertype, auto tune antenna that is designed specifically to go with both my ft897d and ft857d, for both mobile. This atas antenna original was development to use with special yaesu tranceivers equipped with the atas system active tuning antenna system. While i know that any short antenna is a compromise, the atas 120a doesnt seem to be much of a compromise to my mobile operations thus far. The yaesu atas 120a is shown tuned to the correct height for the 50 mhz 6m band and the highest white dot is there so that as the antenna tunes for hf bands and gets physically longer i can see the gap between the two dots increasing and know it is working. It utilizes control signals from the transceiver via the coaxial cable.
The atas120a uses a motorized tuning system which resonates the radiating element for the lowest swr without the need for expensive inconvenient monoband whip assemblies. Yaesu atas120 techsupplement service manual download. This base kit is not intended for mobile operation. The antenna sticks to the handle but you must calmly drive the car. About yaesu atas 120 repair the resource is currently listed in in a single category. Menu mode menu mode the ft891 menu mode, already described in parts of many previous chapters, is easy to activate and setup. I know the atas is sexy but it is a compromise antenna to put it mildly and the hamsticks will probably out perform it. Yaesu atas 120a 40 meter through 70cm at motorized antenna authorized dealer yaesu atas 120a 40 meter through 70cm auto tune motorized hfvhfuhf antenna for ft857d, ft450d and ft897d for the following yaesu amateur radio models ft857d, ft991, ft897d, ft450d, ft450at, ft450, ft100d, ft100, ft857 only. I also never figured out why the screwdriver motor didnt work when placed at the end of 180 of rg2 coax. If i want to minimize rf in the shack and lightning hazard, what some good ways to ground a transmitter and indoor antenna in a top floor room or attic with no exterior access. We hope and trust that you will enjoy many years of enjoyable mobile operation with the atas 120. The atas120a is a unique mobile antenna designed for use with yaesu transceivers equipped with the proper controller, such as the ft991a, ft897d, ft847, ft857d, and ft100 100d.
Yaesu atas120a problem fixed posted on november 20, 2014 by g0isw my vehicle mounted yaesu atas 120a antenna suddenly stopped working yesterday, the antenna lowered itself right down and then wouldnt tune again or move. While driving, you can hear the air and hear the noise in the back of the car. My friend, atas 120 will work mobile with ft857, but again like any screwdriver antenna, these ones are very sensitive and not a very good ones at all times, more over the might possibly tune on one band and not the other, i have give the big high sierra 1800 with its all 8 legs redials and base, ok it did tune on 14 and 40 but thats it, never. The atas 120 has been installed and the rolled flashing isnt quite done since i ran out. Describe your experience with the yaesu atas120a and tell us why you give it the rating you did required. Active tuning antenna system atas 120 installationoperating instructions thank you for choosing yaesus exciting new atas 120 active tuning antenna system. My yaesu atas120a mobile portable antenna setup k3rrr. Yaesu atas120a active tuning antennas cover the 7, 14, 21, 28, 50, 144 and 430 mhz amateur bands and are compatible with the yaesu ft857d, ft897d, ft891, ft991, ft991a and the ft450d. The other glitch in my plan of using two ab switches one to switch from the ldg100 tuner and atas 120 and the other ab switch switching from a solarcon a99 outside and 1080 trapped dipole in the attic too.
If youve gotten this far, its possible that your atas 100 needs to be repaired and you may not have the skills or equipment to tackle it yourself. Earthing the atas 120 antenna when i bought my second yaesu ft857d it was to use in the car. When i was out to film the solar powered ham radio for beginners video, i thought id also make a yaesu atas 120a using with ft857d video. Band conditions have been wayyyy down over the past few months, but im very happy with the atas 120a and ft891 combination thus far and im comparing that with my previous antenna, a little tarheel ii.
The biggest and best ham radio classifieds on the web. Ra0084400 yaesu ra0084400 replacement whip for atas. If you need to have your atas100 or atas120 repaired, there is a fellow ham, tom dailey, w0eaj, with a repair business in denver,co called tom daileys vintage radio repair. Secondhand atas 120 for sale on uks largest auction and classifieds sites. The atbk100 fits over a usersupplied antenna mount on the metal handrail of a flat, apartment, or townhouse balcony, and it includes counterpoise radials for the 50 mhz, 144 mhz, and 430 mhz bands, with the balcony railing. Providing coverage of the 16010 meter bands include the 60 m band. Apr, 2020 yaesu atbk100 antenna base kits are accessory coilloaded radials for the atas 120a auto activetuning antennas to provide vhf and uhf operation when the antenna system is used portable, when not mounted on a vehicle. K3rrr yaesu atas120a mobile, portable and fixed station antenna i wrote this highly viewed page a few years ago. Yaesu atas120a problem fixed amateur radio weblog by. Dec 19, 2014 how to install yaesu atas 120a antenna with ft857 ham radio duration. The atas 120a is a unique mobile antenna designed for use with yaesu the transceivers equipped for the atas system, such as the ft897897d, ft847, ft857857d, ft891 and ft100100d. K3rrr yaesu atas 120a antenna mobile portable and fixed station. The atbk100 is a vhfuhf counterpoise kit for the atas 100120 activetuning antenna system. Installationoperating instructions atas25 active tuning.
But if you want an antenna your neighbors cant see, or recognize as an antenna, then the atas 120 may be the answer to your prayers. How to reset the atas 120 when it locks up youtube. Yaesu atas120 active tuning mobile antenna f radioworld. The atas25 utilizes a manual tuning system which resonates the radiating element for lowest swr without the need for expen. I then reversed polarity and again the motor turned fine. Hi all, i just purchased a new rig over the weekend and am.
The utilizes a motorized tuning system which resonates the radiating. Yaesu ft857d 100w allband multimode mobile transceivers. I bought the first one because i wanted a bit more power when portable than my yaesu 817 allowed. These yaesu transceivers are the ft897, ft847 and the ft100d. Tony, a dipole up high in the trees will work better than the other options tossed about here.
Yaesu atas120a auto active tuning antennas atas120a free. I have tried an atas 100 as a base antenna and i never really had much luck, despite trying runs of wire. Utilizing control signals from the transceivers microprocessor received via the coaxial cable, the atas 120s internal motor adjusts the radiator length for best swr. Sorry for the obvious question, but are you sure in the radio menu you have chosen the correct setting on the tuning menu. We hope and trust that you will enjoy many years of enjoyable field operation with the atas25. It provides this great coverage utilizing automatic motorized tuning. Atbk100 manual vhfuhf counterpoise kit for the atas. Yaesu atas 120a is rg316 is what i ran quickly when i got my ft857d and antenna. Replacement whip for atas 100 atas 120a ra0084400 misc anything that does not fit in any category misc atas100 atas 100 atas120 atas 120 atas120a atas 120a.
This is just a simple video on how to use the atas 120a antenna with the ft857d. There will be significant capacitance between the vertical element and the earth, meaning earth is going to pick up some of the ground planes job. Antennas free delivery possible on eligible purchases. However, after thumbing through the manual i became a little more familiar with them. Will it significantly change the transmit and receive performance. I would like to set it up on top of my 8 f ladder but i do not have the ground plane kit.
Disassembly there is a schematic for the atas 120 available online if you sea. I found the setting to enable the atas 120a antenna and hit the tune button. Ft857d operating manual 1 introduction the ft857d is a rugged, innovative multiband, multimode mobileportable transceiver for the amateur radio mfhfvhfuhf bands. This link is listed in our web site directory since monday aug 17 2015, and till today yaesu atas 120 repair has been followed for a total of 379. Atas setting this setting mode is used when connecting the active tuning antenna atas 120a. I used the atas 120a in combination with my yaesu ft897d tranceiver. What are the effects on an atas120a screwdriver antenna with a limited ground plane. Yaesu atas 120 autotune antenna repair after reassembling the motor and gearbox assembly, i placed a currentlimited 5 volts directly to the motor and noted that it turned fine. This will work about a hundred times better than the atas for fixed operation and depending on the length should load up on most bands.
I use the yaesu atas120a,a 2 lbs screwdrivertype, auto tune antenna that is designed specifically to go with both my ft897d and ft857d, for both mobile and portable operations. Im going to be installing an atas 120a screwdriver antenna at the corner of a metal roof building, without radials going out over 270 degrees of the plane its on. Yaesu ft857d accessory pack bundle adms4b programming softwarecable atas 120a antenna nifty guide ham guides pocket reference card bundle. Mobile antenna designed for use with yaesu the transceivers equipped for the atas system, such as the yaesu ft897897d, ft847, ft857857d and ft100100d. This item yaesu atas120a 40 meter through 70cm auto tune motorized hfvhfuhf antenna for ft857d, ft450dandft897d atas120.