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Possible to run independent RF of multiple RS 15-2117?

 
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micj



Joined: 06 Jan 2004
Posts: 10
Location: Boston, MA, USA

PostPosted: Thu Jan 08, 2004 12:19 pm    Post subject: Possible to run independent RF of multiple RS 15-2117? Reply with quote

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: 18278
Location: Chicago, IL

PostPosted: Thu Jan 08, 2004 12:42 pm    Post subject: Reply with quote

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.
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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

PostPosted: Thu Jan 08, 2004 12:51 pm    Post subject: Re: Possible to run independent RF of multiple RS 15-2117? Reply with quote

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.
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classicsat



Joined: 20 Feb 2004
Posts: 280

PostPosted: Fri Feb 20, 2004 4:14 pm    Post subject: Reply with quote

For what reason would you need to do that?
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