A signal Question for Ben et.al. (NW Mailing List)
NW Mailing List
nw-mailing-list at nwhs.org
Mon Jun 24 17:57:25 EDT 2013
/On 6/24/2013 2:13 PM, NW Mailing List wrote:
> /Now that the N&W guys have responded allow me to tell you what I
> think it is. /
> /This is obviously shot on formerly Southern territory though I cannot
> identify the exact spot of that last sequence with the signal.
> Southern has used a lot of GRS Trakode which because of the huge
> capacitors in the decoders would act just like this. The fact that
> these are positive signals does not mean they are home signals. These
> are back to back headblock automatic signals in non-CTC territory.
> It's the capacitors that are necessary for the operation that cause
> this characteristic, and it's not really a problem. Boilers and long
> hoods have nothing to do with it, at least on Southern./
> /Trakode was being eliminated in favor of electronic track circuits
> that do not have this characteristic. With the advent of PTC
> approaching, I expect the last of the Trakode to be gone in the next
> couple years. /
> /John Marbury/
> /Buford, GA/
Thank you for the information.
-------------- next part --------------
An HTML attachment was scrubbed...
More information about the NW-Mailing-List