FT857D & ATAS-120a installation Part 2 

Hi Michael I've not updated this video for awhile YES I've done what you have posted below and my FT857D and ATAS 120A is working 100% on all bands, most things like this are always dependant on the earthing system you use for bonding for the antenna to work correctly.

Thanks for a real world video, showing that things aren't always great out of the box! Much appreciated info. 73 M0TCF

my son had a Atas antenna worked for year, he got some very good reports from it..

The ATAS-120A antenna is a 40m maximum antenna. It was never meant to tune on 80m, and the radio will refuse to go into tune mode when on 80m. As you understand, bonding is important, but so is a choke balun to prevent RF from riding back into the radio.

Can you tell me which mount you are using for the 857? I've been looking for one but don't fancy shelling out 80 for the yaesu mounting kit :-( Good luck with the atas. Be interested in the solution

Hi - experienced a similar problem with a ham friend with identical set up as yours apart from model of car lol. Anyway it was a grounding issue - or the lack of it to be exact. So we improved things with flat braided earthing straps on all four doors + boot hatch where 120a is mounted (bonded in three areas - antenna/right and left hinges. Bonnet/exhaust also got the treatment. Athough engine block is grounded for DC - we improved it with more flat braided straps - one on rocker cover and another in sump/gearbox area to chassis. Using the correct earthing straps is very important I find - also how there gounded to chassis. Improved things no end - has been 100% reliable thus so far. lol A question for you please - I noticed you had the 11meter calling frequency logged in your ft857d. Can the atas 120a tune out of band to that frequency - presuming mars mod with your radio of course? My ham friend ft857d hasn't had this mod done - hence the question? regards mike 73's

hi iv got an 897 and am looking at an atas too to get away from an atu as i do most of my operation mobile anyway.......what do you think to the atas overall and have you managed to sort your problem............the boot stops you have grounded to are added to the car after it has been painted so may not be a good grounding pointtake apart and take the paint off to the steel possibly? many thanks and all the best m0ydb

Hi, did you get any problems with ignition noise? I’m being plagued by it. It also picks it up from passing vehicles too when my engine is off. Can’t be the earthing though as the antenna tunes up perfectly on all bands?? 🤔

Don't put an antenna on a wet connection. I could see water drops everywhere?!

Bonjour, c'est possible d'accordé l'antenne automatiquement en dessous des 7mhz ? 80M et 45M ainsi que 11M (27.555mhz) ? cordialement.

Where can I get the radio ft857D bracket for mobile...

Hi my callsign is 2i0nat and i have been off radio for a couple of years due to my mental health and I'm feeling a bit better thank god and I'm trying to get back to my radio hobby so I'm looking to set up a quality mobile station can you give me a bit of advice on your full set up including mounts atu etc thank you i wud really appreciate it if you can pm on messenger I'm Ciaran Mooney derry city N Ireland thank you so much i cant wait to get back transmitting

static strap ?

Hello how does this setup work on the 11m band see we skipped that portion hahaha

VERY Misleading. The title refers to installing the atlas. What you are showing is the problems you had after the installation.