RSSI pins for various receivers - Page 3 - RC Groups
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Nov 14, 2009, 05:50 PM
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R136hp rssi

So as you can see on attached pictures, TA7761 on one side so RSSI on pin7 and FP6302B on the other so RSSI also there (see some ealier posts).

Which side do you recommend to pickup the signal to feed ET OSD Pro?
(In either case I guess that a buffer will be needed).

Last edited by vpersiani; Nov 14, 2009 at 05:56 PM. Reason: forgot attachments!
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Nov 14, 2009, 07:17 PM
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Does anyone know how to obtain RSSI signal on a JR R2100 receiver?

Nov 14, 2009, 10:43 PM
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Hugeone's Avatar
For infos, the RSSI on XPS system is the pin #6 on the xbee pro module.
Take note that it's a PWM of 64uS period, when 24% is on you're at rx's sensibility.

You can add a 100kohm res. and a 10uf cap to filter it into 1-3.6V signal.

Nov 15, 2009, 04:29 AM
fpv addict
mrleenagle's Avatar
Anything on jr rx's spcm
Nov 16, 2009, 05:12 AM
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I found the RSSI pin for FMA co-pilot FS8 receiver.

It is on the 2292 IC on the back of the receiver.

Here's the datasheet
Nov 17, 2009, 11:26 AM
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SirAlex's Avatar
RSSI capture for Multiplex RX-12Synth DS IPD and Multiplex RX-9Synth DS IPD

The IC its Philips SA676 and RSSI its on pin 5.

Here is the data sheet


Nov 23, 2009, 11:57 PM
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h_bondok's Avatar
Hi guys,

any one know where is the RSSI for R3110DPS futaba receiver.... thanks
Dec 25, 2009, 02:38 PM
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Jr r2000 & r2100

I found the 31136 chip on the JR R2000 series of receivers...

It is sandwiched between two PCBs and unreachable...

Dec 25, 2009, 02:40 PM
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Try to follow the track from pin7
Dec 25, 2009, 02:43 PM
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It is a multi layered board and the bottom is a solid copper trace...

Desoldering the top board would be a chore for someone with my skills.

I'm going to look at the other JR ScanSelect SPCM receivers to see if I can find a single layer board.
Dec 26, 2009, 08:08 AM
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does anyone knows where is the RSSI pin on a futaba fasst R6014?
Dec 26, 2009, 11:59 AM
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thomasscherrer's Avatar
this folder may contain usefull info
I took also RF measurements and DC supply rejection and IF filter width measurements
see the HTML file in the main folder,
you will also see alot of closeup pictures.
most receivers use the same radio chips, so that is actually what you need to google.
Dec 26, 2009, 01:55 PM
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No JR on the list... I wonder why so many FPVers seem to choose other radios?...
Dec 26, 2009, 09:21 PM
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Jr r790

I found the chip! It was unmarked and hiding under a capacitor!

I love this seven channel scan select SPCM receiver and use it on all my >1mile machines. It is really too bad the pin is so inaccessible. I fished around on both side of the board looking for a better attachment point but, alas, I could not find one.

No Signal = .205V
Full Signal = .618V

Cool. Now I have to learn how to solder to that tiny pin!
Dec 27, 2009, 02:19 AM
Registered User
The voltage swing is too small, imo, for a healthy RSSI indication.

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