How do you know if it works!? Trusting old setup...

Place to come if youre having technical issues, including mic wiring

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soydemadrid
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Thu Mar 12, 2015 4:47 pm

Hi I'm very new to CB radio and have a Land Rover which must have once had a CB radio as there was already an aerial hole next to the stereo aerial and some coax cable that had been cut off when I got it. There is also holes in the dash which seem to look like where the transceiver would of been and also a mic clip...

This got me wanting to put a CB back in the vehicle to see if it would work, so I picked up a cheap CRT S Mini from eBay and a new Antenna.

I don't have an SWR meter or any other kit, but I just put the antenna in where the old one must have been and wired up the radio.

It turns on fine and the lights come on for transmit and receive. The aerial is pre-tuned (it said on the packet) but I don't know if the rig actually works.

I sat in the car for 30 minutes today just going through all the FM and AM channels and I couldn't get anything. When I turn the squelch I get white noise which then goes silent as it should. When I key the mic I get a little click which sounds right.

But I'm getting no answer and there doesn't seem to be anyone out there talking on any FM or AM channels or channel 9 or 19.

I live in York, so maybe no one uses CB at all around here? But I did expect to pick up something or a taxi or someone chatting from a skip hire company...

How can I establish if my Rig works? The old antenna hole may be useless, or maybe the cb radio is a dud and the finals have gone on it?

If anyone can help it would be really appreciated. I don't want to drill holes in the vehicle or buy mounts and move the antenna around if the radio is a dud. Even if I have a poor signal in the current location I don't really mind as long as I can establish it actually is working. Likewise I don't want to buy an SWR either if it's not my aerial position causing the problem.

Thanks again for any help.

Dragonfly
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Sat Mar 14, 2015 8:36 am

You will need a SWR meter to check the tuning of the antenna . Is the radio defo on the uk setting . Not shure how many CB,ers are on in York but there are a few on PMR446 .
https://www.youtube.com/watch?v=ZyVKned-eK4

https://www.youtube.com/watch?v=LndAyeXDIa0

soydemadrid
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Sat Mar 14, 2015 3:48 pm

Hi Andy, thanks very much indeed for replying!

After a week of turning on my CB when making journeys I finally heard someone talking on channel 19 last night! It made me jump actually in shock as I thought my setup wasn't working due to never hearing anything!

Anyway I picked up some pretty crackly talking between two other people, I could nearly make out what they were saying and could sort of recognise they had a Yorkshire accent but I couldn't tell what they were saying due to it being too crackly.

I tried to ask them if my CB was transmitting and someone did respond, but again I couldn't tell if they were definitely responding to me or just still talking to each other - it sorta sounded like it was to me though from the timing of it...

So it may well be that my equipment does work after all. At least I know it receives. This has now given me confidence to order a cheap SWR meter and try investigate further.

Once my meter arrives, is there a check that can be done with it to test that I can also transmit?

Thanks again for your help.

As far as the handheld CBs go - if my rig does work I might be looking to get one that can talk to it so my partner can call me on it when I'm out on a job. Do you know a cheap walkie talkie type CB that will work with my Car's CB?

Dragonfly
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Tue Mar 17, 2015 6:58 pm

when your meter is connected you switch to FWD and rotate the knob till the needle is at the right edge of the scale were it says set ,then switch to REF Reflected and key up and take your reading , hopefully it will read at 1.5 or below .
If the needle wont move at all on any settings then its time to panic but it could just be a faulty patch lead .

soydemadrid
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Thu Apr 02, 2015 3:08 pm

Hi thanks very much I got the SWR meter and ended up getting a Thunderpole centre-loaded antenna and everything is now working great. My base-loaded antenna gave no joy and I couldn't get the SWR below 3 but with the large centre loaded one from Thunderpole everything works sweetly!

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HighwayPatrol
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CB Handle: Highway Patrol
Location: Manchester

Tue May 31, 2016 10:52 pm

I had the CRT S mini and it was a really nice rig and easy to use and program the country codes in. If you arent already aware, the EC setting is the uk fm and the EU is the old FCC band also known as CEPT. You have a great rig there.
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CRT Superstar 3900

Now a member of Charlie Tango Group.

26 CT 2325 :D

tomcruzz
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Tue Apr 25, 2017 11:04 am

old setup is still working

สล็อต

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