Jim,
Toggling a switch rather then disassembling two under warranty garage
door openers and splicing in a non switching supply is a much easier
solution for me.
Steve
On 1/24/20 2:15 PM, Jim Brown wrote:
On 1/24/2020 9:39 AM, Stephen Hawkins wrote:
I have two new Chamberlain Garage Door openers that have cheap
Chinese switching supplies in them that use the wires to the switch
at the people door and the wires to the sensors at the bottom of the
roll up doors as antenna. Despite toroids and bypass caps they wipe
out 160m. When I know we are in for the evening I power them off at
the circuit breaker panel.
The better solution is to simply replace those nasty power supplies
with old-fashioned LINEAR power supplies, cutting the cable for both
the new and old power supplies and splicing the Linear supply to the
cable going to the garage door openers. Details on my website, in the
app note about building contest scores by killing receive noise.
73, Jim K9YC
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Stephen Hawkins NG0G
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73 49 111 01001001
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