Topband: Nasty QRM From ??

[Stephen Hawkins]

Dick,

On 1/24/20 11:20 AM, k8bhz at alphacomm.net wrote:

> These signals are frequency stable and not drifty. Shutting down the
> house-mains with the receiver battery powered does not kill the QRM.

How about your garage?  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.

Steve

-- 

Stephen Hawkins NG0G
ng0g at arrl.net
73 49 111 01001001