When I tow the Jeep behind the MH, I took a magnetic sheet and got some self stick numbers and put my call and 146.52, then cut the sheet to size and placed it on the rear of the Jeep.
Dont have anything on the MH yet as I dont have a rig in it other than the HT.
If Im not mistaken the National 440 freq is 446.00
I believe that 432.10 could also be used.
I also apologize because after posting my reply, I saw the age of this post.
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'13 Forest River Berkshire 36' 360 QL
09 Jeep Wrangler Sahara 4X4 4 spd auto w/ Road Master Falcon TowBar and US Gear Unified brake system.
73
donnie
K7UTA