scott finnie Posted January 22, 2015 Share Posted January 22, 2015 Hi all I'm full of questions and getting nervous of my 1/3 cub maiden. I just got myself a nice aurora 9 combo with 7 channel receiver. On the receiver it has what looks like a bind plug connected to something labeled SPC. What's SPC. Do I need to leave this plug in place? The instructions don't cover it. I'm putting Saturday as maiden day ahhhh. Quote Link to comment Share on other sites More sharing options...
Frank Skilbeck Posted January 22, 2015 Share Posted January 22, 2015 Covered in the instructions here, it's a Supplementary Power Connection system, allows you to power the reciever circuit from a high voltage battery before a battery eliminator circuit which would provide power to the servos. Not sure what value it really is as if you lose power to the servos you may as well have lost power to the Rx. Quote Link to comment Share on other sites More sharing options...
flight1 Posted January 22, 2015 Share Posted January 22, 2015 Yes if you are powering your servosand rx with the same battery- with the optima Rx there are two power rails the 'plug' is a link between the two. If you unplug it you can plug a battery up to 35volts in to it to power the Rx only then you will need to plug in another battery or bec on the servo plug side and this will power just the servos (see diagram in manual). SPC = special power connection me thinks just leave pluged in for standard operation. this is afantastic fuction I don'y know whay know one has done an artical on it Quote Link to comment Share on other sites More sharing options...
Tim A Posted January 22, 2015 Share Posted January 22, 2015 If you use the SPC function on Optima 6, 7 or 9 Ch Rx you get flight pack telemetry voltage showing on your Tx whereas you only get the voltage as supplied by your BEC if you leave the jumper connected to the SPC port. It is more useful for Leccy fliers because if your flight battery voltage drops the display voltage will still show BEC supply voltage unless you have total battery failure - then its all over anyway!! Quote Link to comment Share on other sites More sharing options...
Former Member Posted January 25, 2015 Share Posted January 25, 2015 [This posting has been removed] Quote Link to comment Share on other sites More sharing options...
Frank Skilbeck Posted January 25, 2015 Share Posted January 25, 2015 Unless you are flying at a site covered by a NOTAM, which generally the aerotow meetings are covered by, and you could fit one of these to stop you transgressing if flying from a regular location. Quote Link to comment Share on other sites More sharing options...
Former Member Posted January 25, 2015 Share Posted January 25, 2015 [This posting has been removed] Quote Link to comment Share on other sites More sharing options...
Frank Skilbeck Posted January 25, 2015 Share Posted January 25, 2015 Percy yes, but you have to have one of these as well. Quote Link to comment Share on other sites More sharing options...
Former Member Posted January 25, 2015 Share Posted January 25, 2015 [This posting has been removed] Quote Link to comment Share on other sites More sharing options...
PeterF Posted January 25, 2015 Share Posted January 25, 2015 Posted by Frank Skilbeck on 22/01/2015 22:31:57: Covered in the instructions here, it's a Supplementary Power Connection system, allows you to power the reciever circuit from a high voltage battery before a battery eliminator circuit which would provide power to the servos. Not sure what value it really is as if you lose power to the servos you may as well have lost power to the Rx. It also means that you can power your Rx function from a small say eneloop battery and the servos from another battery. If you draw too much power on the servo rail the Rx function does not brown out requiring it to pick up the signal again, meaning a much cleaner pick up if you momentarily drop the servo voltage too low. Quote Link to comment Share on other sites More sharing options...
Former Member Posted January 27, 2015 Share Posted January 27, 2015 [This posting has been removed] Quote Link to comment Share on other sites More sharing options...
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