[RFI] Mini-Split for new ham shack

[David Winarsky]

> On Mar 8, 2021, at 5:17 PM, Dave Cole <dave at nk7z.net> wrote:
> 
> Being placed in a "specific mode" more than likely means a nice square wave, just narrower than at full power.
> 
> I had the fan motor replaced in my HVAC unit with a motor that did not need "Inverter technology".
> 
> "Inverter Technology", will probably get you "RFI suppressing Technology" in your hamshack...
> 
> Ask to see one in use, and bring a portable SW radio, and some ferrites...  I had a bit of noise on my setup, three or four ferrites later teh problem was solved, but I opted to not avail myself of the latest in "Inverter Technology".  :)
> 

Thanks Don, yes I’m trying to find one that doesn’t involve this inverter technology, but it seems all of these mini-splits have moved to this variable speed type design.  If anyone knows or has a suggestion please let me know!

Maybe I need to look at an old fashioned window unit, although I prefer something more integrated.  

I am definitely planning on snooping around with my portable radio!  I’m testing every single piece of equipment that goes in these days :)

David

> 73, and thanks,
> Dave (NK7Z)
> https://www.nk7z.net
> ARRL Volunteer Examiner
> ARRL Technical Specialist, RFI
> ARRL Asst. Director, NW Division, Technical Resources
> 
> On 3/8/21 10:59 AM, Jim Brown wrote:
>> On 3/8/2021 9:54 AM, David Winarsky wrote:
>>> It seems to have a variable speed motor with “inverter technology” but the HVAC company says it can be placed in a specific mode (low, med, high) rather than auto where it will stay fixed.
>> ANY variable speed motor is likely to be a source of nasty RFI.
>> 73, Jim K9YC
>> _______________________________________________
>> RFI mailing list
>> RFI at contesting.com
>> http://lists.contesting.com/mailman/listinfo/rfi
> _______________________________________________
> RFI mailing list
> RFI at contesting.com
> http://lists.contesting.com/mailman/listinfo/rfi