UHF troubles will recieve but wont send

Submitted: Tuesday, Jun 21, 2016 at 19:45
ThreadID: 132831 Views:2812 Replies:7 FollowUps:4
This Thread has been Archived
Hi everyone having some troubles with my UHF. It will receive all the time but will only send out when the car is stopped. No other cars can hear me once the car is moving.
I am abit stumped at where I should be looking? any advice greatly appreciated
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Reply By: Mudripper - Tuesday, Jun 21, 2016 at 20:05

Tuesday, Jun 21, 2016 at 20:05
Sounds like a break in the coax or perhaps a dodgy connection at the plugs, movement of the vehicle might be causing the transmitting issue. Check the connections at both the antenna and back of the radio. How old is the setup?
AnswerID: 601704

Follow Up By: Hamblyd - Tuesday, Jun 21, 2016 at 20:54

Tuesday, Jun 21, 2016 at 20:54
unknown age was purchased with the car 12 months ago but is a 40 channel. Checked all the connections
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FollowupID: 871236

Follow Up By: Mudripper - Tuesday, Jun 21, 2016 at 21:47

Tuesday, Jun 21, 2016 at 21:47
If you haven't already done so, wriggle the coax around (might need a second person for this) while keying the mike and see what happens. Have another person listening on another radio or handheld to see what they can hear. Depending on how the radio and antenna were installed, one of the plugs/connections might have a 'dry joint' and could require re-soldering. I've completed many HF/UHF installations and always use an SWR meter to 'see' how things are running. Most problems can be traced down to improper plug terminations/soldering, pinching/twisting the coax and bad earths. But sometimes the radio is at fault. Some more ideas might come to me soon...
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FollowupID: 871239

Reply By: Nutta - Tuesday, Jun 21, 2016 at 22:15

Tuesday, Jun 21, 2016 at 22:15
I think the cable can also crack just where it bends out of the cb, seemed to be pretty common problem when i played with them years ago.
AnswerID: 601713

Reply By: Member - Stephen L (Clare SA) - Tuesday, Jun 21, 2016 at 22:58

Tuesday, Jun 21, 2016 at 22:58
Hi Hamblyd

First of all, why would your coax be faulty if it never moves and is fixed in the one spot all the time? From what we see at work, the only time that you can have coax issues is if the coax rubs and is damaged, the lead is put in too tight and any movement from a bull bar can cause the connection where it joins the fitting to fail or the lead rubs on an exposed sharp piece of metal and is damaged that way.

The down side of that type of comment, it that it is just not correct and will give you faulse hope and time wasting around doing this and thst to to avail.

From what you have discribed, you have a radio issue or microphone issue, or even an antenna issue. Take the unit to a qualified technician who can do some very simple and quick tests to confirm the problem. I would put money that you have a TX problem and will explain why your signal can only be heard from a short distance from your vehicle.


All the best and hope you get it sorted.




Cheers




Stephen
Simpson Desert Colours

Lifetime Member
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AnswerID: 601717

Follow Up By: Peter - Wednesday, Jun 22, 2016 at 05:26

Wednesday, Jun 22, 2016 at 05:26
I had a similar problem with my GME 17 yo uhf. turned out to be output module. in radio. it is well documented. You can get repaired but probably better to get new radio. I went with basic GME tx3100.
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FollowupID: 871245

Follow Up By: vk1dx - Wednesday, Jun 22, 2016 at 08:58

Wednesday, Jun 22, 2016 at 08:58
Same again. Take it to a shop and get it fixed.

Phil
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FollowupID: 871246

Reply By: Member - hopbush - Wednesday, Jun 22, 2016 at 07:07

Wednesday, Jun 22, 2016 at 07:07
Had a similar problem and turned out to be be a poor connection with the mic connector after several days on the CSR.
Even though the connection seemed tight, dust had worked its way in and was causing intermittent transmission or none at all although I could still receive. A spray with CRC solved the problem.
AnswerID: 601722

Reply By: Malcom M - Wednesday, Jun 22, 2016 at 08:36

Wednesday, Jun 22, 2016 at 08:36
How do you know your not transmitting? no sound doesn't necessarily mean no TX.
In the receiving car, do they hear the click when you press transmit? If yes then likely to be microphone related rather than antenna..
AnswerID: 601725

Reply By: outback epicurean - Wednesday, Jun 22, 2016 at 18:58

Wednesday, Jun 22, 2016 at 18:58
Had the same problem with 1yr old GMEnglish last month Took to shop and basically not sending. cheapest option new radio rather than.try and find fault in the unit
AnswerID: 601733

Reply By: Member - Young Nomads - Thursday, Jun 23, 2016 at 22:49

Thursday, Jun 23, 2016 at 22:49
just replaced our handset..all good..off ebay
AnswerID: 601766

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