On 12/29/2022 12:41 PM, Pete Smith N4ZR wrote:
Is this a sufficient test? I would probably need 8-10 of these in the
basement ceiling, but it appears that it may be a non-problem. Opinions?
Hi Pete,
I suggest probing for noise around the fixtures and their wiring using
one of the battery-powered radios in this applications note. The Kenwood
TH-F6A has long been my weapon of choice.
http://k9yc.com/KillingReceiveNoise.pdf
When probing, remember that the AC to DC power supply is the noise
source, and the attached wiring is the transmitting antenna. In addition
to antenna action, if each fixture has its own PSU, the transmitter
power of eight will be 9 dB greater than only one. Noise current can be
significantly reduced with multi-turn chokes on the wiring.
73, Jim K9YC
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