Keep Alive Capacity Of WowSound Decoders?

[peahrens]

I note that some (all?) Wow Sound decoders have built in Keep Alive.  I wonder how the related capacitance with the built-in KAs compares with the separate Keep Alives (KA1 - KA4).  If significant capacitance that indeed is a great feature.

https://sites.google.com/site/markgurries/home/decoders/keep-alive-compatibility

In my case, I tried a Radio Shack 2200 uF capacitor in a Genesis GP9 that was a bit marginal on power pickup consistency.  It was (barely) sufficent for the case of that loco and my track.  So now I add a TCS KA or Soundtraxx Current Keeper to any marginal loco and that is usually a big help, since those units are many times the capacitance of my 2200 uF GP9 experiment. 

I would guess that a moderate amount of uF would be a nice feature, trading off a bit with a slightly large space requirement for the decoder.  Are others offering this built in and/or projecting that they will?  My favorite decoder is the LokSound Select but I have seen no mention of including sufficient capacitance to help motor plus sound.  LokSound does offer a separate device, like TCS and Soundtraxx.

[tstage]

Paul,

I am only guessing but I'd say 1-2 seconds for built-in caps, which is usually the minimum for add-on keep-alive modules.  Unless your track is unsually bad or dirty, that should be adequate enough to cover any small interruptions in DCC packets.

Tom