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micj
Joined: 06 Jan 2004 Posts: 10 Location: Boston, MA, USA |
Posted: Thu Jan 08, 2004 12:19 pm Post subject: Possible to run independent RF of multiple RS 15-2117? |
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Looking at the schematic of the Radio Shack 15-2117, it does not appear to have multiple independent RF channels, without either tuning a variable cap or changing a component.
Has anyone been down this road, and if so, could you supply details if successful?
Thanks,
Ira |
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The Robman Site Owner
Joined: 01 Aug 2003 Posts: 21234 Location: Chicago, IL |
Posted: Thu Jan 08, 2004 12:42 pm Post subject: |
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It's not possible (or at least, nobody's invented a hack for it).
If you have two 15-2117s set up, each remote will send signals to both RF extenders. _________________ Rob
www.hifi-remote.com
Please don't PM me with remote questions, post them in the forums so all the experts can help! |
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mr_d_p_gumby Expert
Joined: 03 Aug 2003 Posts: 1370 Location: Newbury Park, CA |
Posted: Thu Jan 08, 2004 12:51 pm Post subject: Re: Possible to run independent RF of multiple RS 15-2117? |
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micj wrote: | Looking at the schematic of the Radio Shack 15-2117, it does not appear to have multiple independent RF channels, without either tuning a variable cap or changing a component. | No, I don't recall hearing of anyone doing this.
I really would not suggest that you try this unless you have the proper equipment. The FCC has only allotted a fairly narrow band of frequencies for remote control, and they take a dim view of harmonics interfering with aircraft navigation, public service communications, etc. The receivers are quite wide-band, so you'd have to move the operating frequency quite a bit, and then you'd probably suffer interference from other sources.
I have not looked at the 2117's transmitter circuit, but prior models were L-C tuned. One of these days UEI is going to follow the lead of other RF manufacturers and start using SAW tuning devices, in which case, re-tuning would not be possible. _________________ Mike England |
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classicsat
Joined: 20 Feb 2004 Posts: 279
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Posted: Fri Feb 20, 2004 4:14 pm Post subject: |
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For what reason would you need to do that? |
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