setting up the aerial
hi davs.
dont worry about swr to much. put mag mount where you want it.Put a rag or something under it first so it dont mark your paintwork.
bring coax into truck through door ,there is enough give in door seals to accomadate it.
wire cb to battery or use cigar lighter socket.
DONT FORGET TO USE A FUZE
ADJUSTING SWR
set cb to channel 1 take an swr reading ,set to channel 40 take a reading . now move the sliding piece of aeriel up or down then take another swr reading ........"has it gone up or down" check channel 1 again . the aim is to get the swr to ballance at channels 1 and 40 .
so you may need to play around with it for an hour to get it at its best.
if you have got a reading of 1.0 to 1.6 then you are ok .
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USING AN SWR METOR .put cb on channel 1.
if you look at the metor you will have a knob and a switch on front panel
connect metor in line using a patch lead between rig and metor ,screw aerial in other end . put switch in left hand possision key mike and turn knob clockwise and watch needle rise keep turning untill needle goes right to end of red scale .now let go mike key and switch to right side key mike again and read of the scale .
now repeat on channel 40
.............................................SWR FAULTS
IF YOU HAVE A NEEDLE THAT FLYIES ACROSS INTO THE RED ON BOTH SWITCH POSSISIONS YOU HAVE A COAX SHORT (inner and outer touching each other making a dead short usualy fault is at the plug.
try moving mag mount about on roof or bonnet and check the readings again some places will read lower or higher and the signal strength will be stronger for and aft which is ideal for mobil use on road .
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IF USING A GUTTER MOUNT A GOOD BARE METAL EARTH IS REQUIRED.
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DONT WIRE UP + AND - THE WRONG WAY ROUND.
IT WILL SMOKE AND DIE.
I USED TO BE A RIG DOCTOR AND REPAIRED A LOT OF RIGS DUE TO BEING WIRED THE WRONG WAY ROUND.
YOU HAVE BEEN WARNED
rgds.iandouglas