[TowerTalk] Mitsubishi interference?

[Jim Brown]

On 7/25/2018 2:53 PM, Steve K7AWB wrote:
> I am considering a mits heat pump for the house.  The shack would 20 or so feet from the outside unit. In main rooms would be the wall mount units. Mits literature has the usual warning of keeping so many feet from their units for controlling interference

If it has variable speed motors, it will almost certainly be noisy. This 
is a generic problem with variable speed motor controls, and is not 
specific to Mitsubishi.

> Do any of you use these units and have undesired effects?  I had a ham friend (sk) years ago put one in his shack and he never mentioned any  undesired effects to me.
>
> The closest tower is about 130 feet away from the shack.

If the unit is noisy, you'll hear it when you point an antenna to it 
(and on wire antennas that are close enough). Proximity to the shack 
doesn't matter. Proximity to antennas does.

73, Jim K9YC