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Fix 2 RF receivers reacting to same RF remote [SOLVED]
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downloaders:
I bought 2 emitters and 2 RF receivers for some electric blinds, but both receivers react to both remotes.
The receiver learns its remote by pressing a button on the receiver to get into pairing mode and then pressing a button on the remote and they are paired.

This is far fetched, but can I replace the crystals on one receiver and emitter so they don't interfere with the other one?

The crystal I have on the receiver is a 4.897 and on the emitter a NDR 3208 j3.

I tried to look up what frequencies they work in but on the 4.897 i got 4.897 MHz and on the NDR 3208 j3 i got 315MHZ so I don't even understand how they communicate with each other.

Are there other sets of crystals that would also be a match and replace them? So they don't interfere with the other remote?

Or is there any other solution for this issue?
w2aew:
Doubtful that you can change the crystals to fix the issue.

Since there is a pairing operation - have you tried pairing one set the the other completely powered off (battery removed), and then repeat the process for the other?  Maybe they'll pair with a unique code so that they only respond to the transmitter they're paired with.
Wirehead:

--- Quote from: downloaders on June 20, 2018, 11:07:09 pm ---I bought 2 emitters and 2 RF receivers for some electric blinds, but both receivers react to both remotes.
The receiver learns its remote by pressing a button on the receiver to get into pairing mode and then pressing a button on the remote and they are paired.

This is far fetched, but can I replace the crystals on one receiver and emitter so they don't interfere with the other one?

The crystal I have on the receiver is a 4.897 and on the emitter a NDR 3208 j3.

I tried to look up what frequencies they work in but on the 4.897 i got 4.897 MHz and on the NDR 3208 j3 i got 315MHZ so I don't even understand how they communicate with each other.

Are there other sets of crystals that would also be a match and replace them? So they don't interfere with the other remote?

Or is there any other solution for this issue?

--- End quote ---

You're using the wrong frequency in Europe and are violating the law.. the ISM band in Europe is 433Mhz - You have the US version of the transmitter :)
downloaders:

--- Quote from: w2aew on June 21, 2018, 04:01:19 am ---Doubtful that you can change the crystals to fix the issue.

Since there is a pairing operation - have you tried pairing one set the the other completely powered off (battery removed), and then repeat the process for the other?  Maybe they'll pair with a unique code so that they only respond to the transmitter they're paired with.

--- End quote ---

I have tried pairing it today with just one of the sets on, then the other, but same issue :/
downloaders:

--- Quote from: Wirehead on June 21, 2018, 08:28:43 am ---
--- Quote from: downloaders on June 20, 2018, 11:07:09 pm ---I bought 2 emitters and 2 RF receivers for some electric blinds, but both receivers react to both remotes.
The receiver learns its remote by pressing a button on the receiver to get into pairing mode and then pressing a button on the remote and they are paired.

This is far fetched, but can I replace the crystals on one receiver and emitter so they don't interfere with the other one?

The crystal I have on the receiver is a 4.897 and on the emitter a NDR 3208 j3.

I tried to look up what frequencies they work in but on the 4.897 i got 4.897 MHz and on the NDR 3208 j3 i got 315MHZ so I don't even understand how they communicate with each other.

Are there other sets of crystals that would also be a match and replace them? So they don't interfere with the other remote?

Or is there any other solution for this issue?

--- End quote ---



You're using the wrong frequency in Europe and are violating the law.. the ISM band in Europe is 433Mhz - You have the US version of the transmitter :)

--- End quote ---

Don't we always violate our law a bit for our blinds? ;) But thanks, any way of changing the crystals to 433Mhz?
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