RSSI info / provide signal strength

[RCcocktail]

I should have mentioned that: I'm using 3.3V to power the RXB6.

[akicker]

Leaving R6 in place and bridging R7 shortens RSSI and Data Output !

I have 2 of these RXB6 (one of them marked with Rev 2.0 - with the white Label Q.C. passed). Both of this boards have the same Layout.
One pad of R7 is connected to pin 14 (RSSI) of the receiver itself (SYN500R) and the other one to the connector pin 6 of the board,
so it should work, to move the 0 Ohm resistor R6 to R7.

Unforunately without success !
No RSSI signal at pin 6 "DER" - Looks like "not connected" or "floating"
Inspected with a multimeter and an oszilloscope.

Did anybody find a solution - respectively: where to get a working board ?

[Stuntteam]

I ordered from the mentioned links and did not receive a 2.0 but one without any marking.
No rssi signal present.
It is useless to implement this if no one is able to get modules that actually supply the signal.
Opening the metal shielding on the module to connect to a chip pin is not the way to go.

[gert3d]

What would shorting to the ENABLE option do?

[pete_l]

I looked at the RXB6 board and the chip's RSSI pin is not connected to anything (see attached pic).

I popped the lid off one of my RXB6s. It turns out that pin 14, the RSSI output has a track that runs under the IC to a via and that goes directly to the R7 pad (the pad nearest the crystal, in the picture).
However on my devices, the RSSI isn't much use as a received signal strength indicator. It just seems to be an sample of the input to the data slicer.

The image below shows this. The yellow trace is the logic level output and the blue one underneath is the RSSI output.

rxb6-data-slicer.jpg (189.53 KiB) Viewed 23588 times

[DonR]

It looks like this effort has been abandoned. However if you take a close look at the blue trace you can see that its level is not constant. In other words it is giving a signal strength indication but with the digital data riding on top of it. If you use a capacitor to smooth the output and maybe some proper programming in your sketch it looks like you could monitor the signal strength as desired.

[Stuntteam]

It is nice to have the signal strength.
However, it would need to be accessible on one of the RF pins to go forward.
If the pin does provide the signal and we can get hold of the value by adding a capacitor or other extra hardware then it would indeed be a nice addition.