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- Newsgroups: rec.models.railroad
- Path: sparky!uunet!zaphod.mps.ohio-state.edu!rpi!pratta
- From: pratta@aix01.lost.in.dreamland (Anthony Edward Prattico)
- Subject: Re: Command Control receiver sizes and system costs
- In-Reply-To: Joe.Russ's message of Mon, 23 Nov 1992 05:57:08 GMT
- Message-ID: <8631jy_@rpi.edu>
- Nntp-Posting-Host: aix.rpi.edu
- Organization: Rensselaer Polytechnic Institute, Troy NY
- References: <1992Nov20.173707.21591@bmers145.bnr.ca> <1992Nov23.055708.17404@mixcom.com>
- Distribution: usa
- Date: Mon, 23 Nov 1992 15:58:37 GMT
- Lines: 52
-
- In article <1992Nov23.055708.17404@mixcom.com> Joe.Russ <Joe.Russ@mixcom.mixcom.com> writes:
-
- >I've operated layouts with both the Dynatrol system and the CTC-80
- >system. Dynatrol is OK, but in my opinion is begining to fade. It
- >"was" THE system here in the Milwaukee area for a number of years
- >(Kalmbach's MR&T had it), and I never saw any real problems with it
- >aside from expandibility.
- >
- >Within the past few years Keeler's CTC-80 has taken the area by storm.
- >I know of three layouts in one small Milwaukee suburb which have it
- >and Kalmbach has gone to it for the new MR&T. I've operated with it on
- >John Tew's Timber River (recently featured in MR) and have never seen
- >a problem that wasn't caused by operator error or extremely dirty
- >track/wheels. As for receivers, John has one installed in a small
- >two-axle switcher - you can't get a much smaller HO loco than that. :)
- >
- >Anyway, I hope this helps. I know you wanted somewhat more technical
- >stuff, but all I can give you is my experience operating on them.
- >--
- >Joe.Russ@mixcom.com
- >WISE Div., NMRA
-
- We use CTC-80 on the NEB&W here, and this system did in fact replace Dynatrol.
- One of the big problems with Dynatrol is that it is an analog system, and on a
- large layout there is a noticable signal loss. CTC-80 is digital, so there is
- no loss except for very, very dirty track. If I remeber correctly, as one point
- PSI recommended that we use 1/2" copper tubing as the main layout feeder to
- prevent such losses. Yeah right. Most of our problems with CTC-80 stem from
- operator incompetence. For example, overloading a single engine to the point
- where the power transistors on the receiver start to melt. Also, dropping
- throttles and mishandling steam engines so the the wires between the engine and
- tender break, or get nicked and start to short. Also, dirty track and wheels
- cause cross-talk, and sparks between the engine and wheels, which is not good
- for the receiver, and cuases damage to it.
-
- We're very pleased with it, and have made only one significant change to it.
- That was to rewrite the command program in C so it runs much faster now. Also,
- we got the new ROM from Keeler which has several improvements, notably twice
- that number of throttles are supported, and they respond faster.
-
- I will provide more information upon email request, and will send your name to
- the person who rewrote the program if you're interested.
-
- Note however: Requests must be made November 30-December 19, or after January
- 10, 1993. I will be unavailable outside of those times.
-
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- Anthony Prattico pratta@rpi.edu
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- All opinions are mine and mine alone.
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-
-