Mitsubishi Delica Owners Club UK™

[gary2610]

hi all just wanted to know if this is a okay set up for a newbe and what is a SWR meter and do you need one and what is it for
http://www.4x4cb.com/public/item.cfm?itemID=1308
thanks gary  :?  :?
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don't steal as the govrment does not like competition so don't get found out lol

[Google]

[Disco_Matt]

CBs really are down to personal preference, but I can help with the SWR meter.

Yes you do need one, or at least you need to borrow one from a mate. Basically SWR is an indicator of how much of the power your radio is putting out is being radiated, or how much is being reflected back into the radio. A high SWR will mean that you are not getting the best range and can kill your radio. To avoid this, you adjust the aerial and check the SWR with the meter.

The meter is used by connecting it in line between the radio and aerial. Flick the switch on the meter to "FWD", select channel 19, and key the mic. The needle on the meter should move. Use the adjuster knob to place it on "Set", then release the mic. Now flick the switch to "REF" and key the mic again. The needle is now indicating your SWR. It must be under 3, and ideally as low as possible. Generally you should aim for around 1.5:1 or so. To adjust it, first try moving the aerial (if on a magnetic mounting) as the next phase involves cutting the aerial. I've not had to trim an aerial yet (thankfully!) but obviously this is a one-way process so try moving it first.

The 4x4CB people are a good bunch and will be more than willing to help you out if you call them for some advice before ordering. They should also be able to advise on how to SWR the aerial properly.

[gary2610]

thank you Disco_Matt for your help i will have to ring them and also can you run more then one aerial on the one cb
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don't steal as the govrment does not like competition so don't get found out lol

[Lewis]

Checkout this link for info the Standing Wave Ratio:- http://www.firestik.com/Meas-SWR.htm
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[Disco_Matt]

You can run twin aerials, there are wiring harnesses available to do this. I've not tried it however, and I hear that they can be a swine to SWR properly.

[gary2610]

thanks Lewis and disco for your help i will read the link you have given me and see what way to go thanks again  :D
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don't steal as the govrment does not like competition so don't get found out lol

[Disco_Matt]

Just realised there's a thread about running twin aerials in this section of the forum - look at the one about "co-phasing".
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Matt

1996 LR Discovery 300TDI. It's an honourary Delica, or so I've been told!

[m0jfk]

Co-phasing is only any good if you’re a trucker and the aim of using dual antennas is to distort the signal or should I say make it most bias to the front of the cab, obviously a trucker needs to know what the road traffic is like further up the road so he will use the co phasing method and its distortion effect to project the strength of his transmitting signal forward and up the motorway.
Proper co phasing requires them (the two antennas) to be 21ft or more apart and if you see any vehicles that wide please can you send me the picture?...like I said it’s the distortion pattern of the radiated signal that makes them use this system when both antennas are placed only a couple of feet apart like that of a truck cabin if placed on say the mirrors.
okay you can put them on your 4x4 if you like the looks antennas all over yeah vehicle and it will work but you will get the same and better result if you just put your single antenna on the back of your 4x4 and  in my opinion is better than having two at the front and  at twice the cost to boot.

[gary2610]

thank you fou your reply mate i will take not of what you have said and also see what you are saying thanks again for your help
_________________
don't steal as the govrment does not like competition so don't get found out lol