[Elecraft] OT Antenna location concern

[Don Wilhelm]

Bill,

All products are required to withstand RF susceptibility levels.  So if 
you encounter "strange happenings" with your HVAC system due to RF, the 
supplier is bound to take corrective action.
Some may not understand, and some may not even know of the requirements, 
so at worst case, you may have to get the FCC involved for resolution.
The most published FCC class B information regards radiation from the 
device(s), but there is also regulations regarding susceptibility from 
radiation from licensed services.  The fact that you addressed the RF 
interference situation with the installer should go a long way (document 
that conversation for yourself with dates and names), and for a 
reputable company should be as good as a written statement (I am no 
lawyer, but it makes sense to me).

73,
Don W3FPR

On 8/14/2014 4:20 PM, W2BLC wrote:
> I recently installed a Mitsubishi mini-split system and now have an 
> antenna concern. I am about to install a new dipole that will pass 
> within ten feet of one of the interior units (that would be measured 
> through the wall). I already know that the system has produced no 
> interference to any reception - however, I am concerned about how 
> being close to a transmitting antenna will effect or not effect the 
> unit/system. The antenna's location will meet safe human exposure 
> limits for the bands/power used - 160/75/40.
>
> I am assured by the installer that RF is not a problem and not to be 
> concerned - of course that is not in writing. Attempts to email and 
> call Mitsubishi have not been informative. Hence my question:
>
> Has anyone had difficulties with the control systems of their HVAC 
> systems caused by RF from a nearby transmitting antenna? I run the 
> KPA500 all the time - so consider this a 600 Watt station.
>