TOC,
Do you need motor chokes if your receiver is in a trailing car, or a tender?
jb
Not as much nor as critical.
However, I put them in everything.
Our install kits designed to go in the door of a boxcar have them already built in.
I still have a couple from almost 16 years ago that I took out of the original trail cars when I put the gear in the tenders, used them there, finally removed them for the regular install kits.
TOC
What is a motor choke?
Doug, an RF Choke is a coil of wire wound around a former through which passes a voltage. The coil cleans up the voltage so that little or no Radio Frequency Interference (RFI) can proceed along and/or radiate from the wire and interrupt the radio signal coming from the TX handpiece. The value of the coil is expressed in MicroHenry’s and varies according to the frequency. They need to be of adequate current carry capacity. One is required for each motor lead. They can be inserted in the motor leads close to the motor(s). RCS offers two RF Chokes mounted on a small (thumb sized) pcb with two small capacitors to further aid suppression. The RCS part is designed for any R/C that uses 27 Mhz and is installed using screw terminals.
WHAT…!! No 24 pin plug in board. I gotta screw something…Ahhhhhhhhhhh…
Warren quietly slinks out of the forum…
Formulate a proposal in the proper format, and I can get you the contact information for the person who promises to “pass it along”.
Remember, you MUST use a plug and socket arrangement that no-one currently uses, and it would be helpful if you had a proper patent applied for.
Make sure you use specific electronic componentry IN ADDITION TO that required for proper operation that will make it useable ONLY with those who use your specific protocols.
This is highly critical!
Then, e-mail every manufacturer you can think of with your proposal, and claim that these (un-named) manufacturers are in your Working Group.
Then, get onto forums and promote your protocol for said device, but NEVER MENTION what you have waiting to plug into it later.
Call it “Door # 2” for lack of a better term.
Pick on everyone who finds justifiable fault with your design.
I can even get you the name and phone number of a specific publisher to complain to if someone gets too close to the truth.
And become highly indignant when someone calls you a piss-ant politician.
Warren Mumpower said:No, I am NOT going there. Even at Oktoberfest.
WHAT..!! No 24 pin plug in board. I gotta screw something.....Ahhhhhhhhhhh.......
That’s alright, Chris. I couldn’t touch your last comment concerning a certain Friar dancing nude at midnight in January…
BOB! We need an adult room…
<<The RCS part is designed for any R/C that uses 27 Mhz and is installed using screw terminals.>>
Is 27 Mhz the standard?
In other words, will this choke work well with AirWire, Aristo, etc?
jb
The trackside TE is 27mhz. But the current “on board” by Aristo is 75mhz. What you saw in my box car was the 27mhz version. 27mhz and 75mhz are assigned by the FCC for train use.
…next nude sundance is October 26th…full moon…
Fred Mills said:Not quite Halloween ...
....next nude sundance is October 26th.......full moon....
John Bouck said:
<>Is 27 Mhz the standard?
In other words, will this choke work well with AirWire, Aristo, etc?jb
The basic design will work with any type of R/C.
The component values will vary depending on the frequency.
As supplied the RF-CHK part is designed for the RCS 27 Mhz range. It will also work with the 27 Mhz Trackside TE.
It may work with other frequencies, I do not know.
Locolinc and the TE on board are 75 Mhz. AirWire is 900 Mhz.
Fred Mills said:I'll notify the RCMP..........;)
....next nude sundance is October 26th.......full moon....
Ken Brunt said:Shssshhh!!!Fred Mills said:I'll notify the RCMP..........;)
....next nude sundance is October 26th.......full moon....
Don’t tell them, they might want to join in.
Ok I’ll bite. Munch, munch, munch.
I don’t have chokes on either engine. What do they do? Choke, choke!
They do what Tony said in the fourth post.
“Choke out unwanted interference.”
TOG
A coil resists high-frequencies, but conducts low. They keep RF noise from the motor brushes from getting to the receiver.
Thanks John, short term memory failure!
John Bouck said:
<>Is 27 Mhz the standard?
In other words, will this choke work well with AirWire, Aristo, etc?jb
In general, RF chokes are designed to be broadband devices, and unavoidably have 2 frequencies in the radio spectrum where they’re ineffective; i.e., the frequencies where they’re self resonant in the series and parallel modes.
Unless you get REAL unlucky, in this application the Fs and Fp frequencies aren’t gonna hit on anything that’s important to you… so yes, they should be effective on frequencies other than 27 MHz.
Mr. T.