I suspect this tyt mobile is very similar, if not exactly the same as the 
wouxun 950P...the 950p receives AM just fine on 11m, but like you say, only 
transmits FM...even when in AM receive mode, as soon as you transmit, it 
transmits in FM.
There is no modification to make it transmit AM because the entire radio is 
processor controlled and an AM transmit section would basically require the 
entire radio to be redesigned.
unless the radio is design from the ground up to transmit am and SSB which 
the 5555 is.
Why don't you look around for a used IC706 mark IIg...they can be had 
usually for around 400 bucks these days and then you'd have all the bands 
you want with full all mode capability...very easy to modify one of those as 
well to transmit outside the ham bands.
they also have a removable head so mounting options are better in a smaller 
vehicle.
When these guys say they'll put the 11m AM channels in for you, they are 
telling you they'll program them so you can receive on them but don't expect 
to transmit unless the radio was specifically designed to transmit on AM 
which all of the quad band mobiles are not.
73
Colin, V A6BKX
--------------------------------------------------
From: "Michael Ryan" <[log in to unmask]>
Sent: Friday, May 09, 2014 8:40 AM
To: <[log in to unmask]>
Subject: 10M

> Hi all:
>
> Anyone active on 10/6M lately?
> What have the conditions been like? I might be moving from the 10/11M 
> mobile to a 10/6/2/70CM TYT TH-9800 as this comes with a remote head and 
> all the cables. We have a Kia and the interior is cloth and plastic and my 
> XYL is not sure she wants a big honking radio mounted on the dash with 
> holes drilled in the dash to hold it.
> Plus, I'd have to remove it when I'm not in the car fear of it being 
> stolen when my XYL is at work or when we're in for the night. The TH-9800 
> would allow me to mount it in the trunk, possibly make for better 
> grounding and I'm guessing that the remote head dock mounts by way of 
> sucker feet, similar to my satellite receiver used to. No biggy as I could 
> mount the holder on the windshield and just unplug the remote when leave 
> the car. The importer is also willing to program in A.M 11M channels for 
> me, which could serv.
>
> 73:
> Mike VO1AX