SWR Reading

No matter what i try i can get my reading below 3 have tried puting a lead off the earth on the mount to the bat and that did nothing tried changing the lenth of the ariel and that did nothing

any other ideas ??

yup
change the aerial. Make sure all earths are ok.

better still - go to Maplins with yo SWR and check the aerial yu buy - if it aint any good - keep taking it back till yu get one that is ok.


i had the same prob - borrowed an aerial from DV and down to 1 immediately.

that reminds me - must take it back

i have got a 5" springer on it now what did you get for yours?

this was for my speshul land rover - when we went across Salisbury - so it was only a temparary measure.

this is what i got from Maplins - blurry useless.

ooooo - thats a big one - sorry.

Try a different mounting position for the antenna and make sure the base is properly grounded to the body. Putting an earth wire to the battery or any other part of the car wont work.

The main problem with defenders is that all the body panels bolt together and some may not be as well grounded as others due to the panels being painted before being bolted together so you need to mount the antenna to a part of the body that has a good ground to the bulkhead.

Check to make sure the center part of the coax isn't grounded, check this with a multimeter.

Is it 3 right accross all 40 (or 80) channels? If you have an 80 channel rig, check the swr on mid band, if its lower on mids and high on muppet band then the antenna is too long. A lot of antennas on the market today are tuned more for 26mhz than 27mhz. I had to cut 2 1/2 inches off my sirio 4000 to get a 1.3:1 swr right accross the board.

If you find that the antenna is too long even at its lowest point then start cutting it a 1/4 inch at a time. Cut it at the bottom, not the top. Check the swr after each cut on mid and hi bands and make sure all the doors are closed and you're in an open space away from buildings, metal structures etc.

That is a MAHUSSIVE PICTURE DAFT!! I've got one of those antennas for sale if anyone wants it, a tenner and a pint o ale

Wot after I sed it is crap?

The Mad Hat Man said:

Wot after I sed it is crap?

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well points for trying anyway Fooking numpty

The Mad Hat Man said:

Wot after I sed it is crap?

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They are worse than crap, I had one a few yrs ago that did fook all anurl.

smirk! Someone on heres gorra be ficker than me. Might put it on the bay of ghey.

use it to anally probe your arse heffs. gotta be less hassle than getting tweets round to do it for you

90boy said:

i have got a 5" springer on it now what did you get for yours?

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Maybe put a bigger aerial on?

After all, 5 inches isn't a very big one...

all igot is a 10 inch rubber duckie fing on my roof light bracket it works fine but no distance can be reached