Re: Decora HCPRF WAS: Re: UPB, etc. WAS: Need some antenna advice...

[nobody@xxxxxxxxxxxx (Dave Houston)]

The LM14A transmits its ID (as an extended code which is longer than
standard codes) when it powers up. The LM14A only sends this if it has been
without power for some length of time so brief power glitches will not
trigger it.

However, the recent thread from 'AZ Woody' about phantom codes being logged
when he ran his paper shredder, is probably a precursor of more such
reports. The shredder motor was causing his two-way switchlinc to 'think'
its load had cycled and it was sending the codes. This may also explain the
reports of phantom codes from a noisy PC power suppy. (However, the details
of that one changed considerably over time so I think that poster was just
confused.)

The Monterey just applies the label "Bad Start Code" to any sequence of 1110
that is not followed by a valid code. As a result, you'll see messages
posted here from Monterey users saying things like "tons of BSCs" from a
collision like the one I describe in the "Multiple Transceivers" app note.
I've color coded the sequence seen at the receiver to highlight all the 1110
sequences that result from a collision between codes that are identical but
1/2 a powerline cycle out of sync.

The terms "valid 1110" and "Bad Start Code" are really a bit meaningless.