I'm considering getting some VHF two way radios and renewing an old license we used to have with a frequency of 151.775.  I've read some horror stories of people having problems with their two ways interfering with their precision stuff and want to avoid that.  Does anybody else have a frequency in that range and use Trimble precision equipment.  I will be putting these radios on a CIH 7120 combine, Magnum 245 tractor, and two semi tractors.

I'm looking at Icom IC-F5011 or F5021 mobile units that have 50 watts of power and a few hand held units with 5 watts.