ChrisPWRR Posted April 8, 2008 Share Posted April 8, 2008 I have a couple of cables that I'm unsure of can you help? Also are the main cables correct there are 2 positive and 1 negative. I have a plug as well!?! What would that be for? Quote Link to comment Share on other sites More sharing options...
Tony B Posted April 8, 2008 Share Posted April 8, 2008 If this is on one of the Racal's then they had a 240 volt generator fitted. So it could be an output. Quote Link to comment Share on other sites More sharing options...
ChrisPWRR Posted April 8, 2008 Author Share Posted April 8, 2008 I think it was racal cheers for that fella the 2 cables with the question mark were connected when I brought the landie the last time we had it running tried to connect it and it made a big whole on the terminal of pauls battery Quote Link to comment Share on other sites More sharing options...
sirhc Posted April 8, 2008 Share Posted April 8, 2008 You tried to connect them while it was running? No wonder it was sparking! Quote Link to comment Share on other sites More sharing options...
ChrisPWRR Posted April 8, 2008 Author Share Posted April 8, 2008 No sorry I mean we connected them before we started it when we turned it over it sparked Quote Link to comment Share on other sites More sharing options...
Shakey985 Posted April 8, 2008 Share Posted April 8, 2008 This is in Australia for 24 volt FFR 1. you need 2 12 volt battery's 2. Leads to Vehicle Radios are one Negative And One positive ( into a Box and then to Radio mounting trays). 3. a short lead that connects the positive on one battery to the negative on the other battery and so compleats the circuit of joining the two 12 volt battery's together. Paul Quote Link to comment Share on other sites More sharing options...
ChrisPWRR Posted April 8, 2008 Author Share Posted April 8, 2008 Cheers paul I got that just wondering what the other positive that goes through the floor for and what the other cables are for! Quote Link to comment Share on other sites More sharing options...
Shakey985 Posted April 9, 2008 Share Posted April 9, 2008 In our FFRs there are 2 sets of radio batteries connected as described under the body, 2 on the drivers side and 2 on the passengers side plus the vehicles battery 12 volt under the passenger seat(series 2A landrover) There should also be 2 alternators one small for the vehicle and one large for the radio batteries. Paul Australia Quote Link to comment Share on other sites More sharing options...
GreenRadioMan Posted March 22, 2013 Share Posted March 22, 2013 Hi All, Anyone know what the maximum voltage across the + and - rails at the radio bench of a UK/VRC322 setup with PSU 50 Amp charging the four under bench batteries, and all gear off, [VRC321 radio, lights and the ARF250]. best 73s, Dave G4JHT/EI0DB Quote Link to comment Share on other sites More sharing options...
g0ozs Posted March 22, 2013 Share Posted March 22, 2013 Dave The voltage will be determined by the PSU regulation and battery charge current - my experience of the 50A PSU is that the variation between full load and no load voltage is minimal and most examples are set at 28v. You may find that some kind of charging regulator (or at least current limiter) is desirable if the batteries ever end up deeply discharged as the PSU will trip if its output exceeds 50A by much. Regards Iain 73 de G0OZS Quote Link to comment Share on other sites More sharing options...
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