Most RFI to/from ham radio and "devices" is caused by poorly designed
electronics using interconnected wiring as TX/RX antennas. Because of
the frequencies on which they operate, WiFi-connected devices with no
exterior wiring are inherently FAR less likely to create or receive RFI
IF they operate on internal batteries. If running from the AC line or a
switching power supply (wall wart, wall lump, etc.) the PSU will almost
certainly create RFI noise and wiring both on the AC and DC side will
radiate it.
Bottom line -- choose stand-alone devices with internal batteries and no
external wiring for minimum RFI.
In your situation, I would try one of them before returning them.
73, Jim K9YC
On 10/29/2020 12:57 PM, Harlan Sherriff via Elecraft wrote:
Dave, I totally agree. I am sure the “problem” the manufacturer is cautioning
about is RF, since my original post was about “wireless connected” detectors.
My gripe was nothing in the sales literature warned against it. Not till I
bought the units and read the installation guide
Sent from my iPhone
On Oct 29, 2020, at 3:51 PM, Dave B via Elecraft<[email protected]>
wrote:
Well, RF (AKA "Radio Waves") can falsely trigger all sorts of equipment
that was not "designed" to work with, or be influenced by them.
That is the classic EMC Susceptibility or Immunity problem. Basically,
poor design and/or implementation of the affected (or sometimes bad
installation of an otherwise good) device.
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