haminternational uk /same as Colt 444 out of frequency on FM

For discussions on CB Radio Repair and Troubleshooting, do not post modification requests here, use the Modifications forum !
Post Reply
zimbo
Dead Key
Dead Key
Posts: 14
Joined: Saturday 14th Feb 2009, 22:54
First Name: john
Location: glasgow

haminternational uk /same as Colt 444 out of frequency on FM

Post by zimbo »

Radio Make and Model:Ham international uk /same rig as Colt 444
PCB Number:
PLL Number:LC7120
Test gear available:Volt metre
Symptoms:out of frequency on FM

What is working:All other modes

What has been tried:nothing

Did it suddenly happen ?:just bought rig
Anything else that may be of help?: component L15 looks damaged
zodiac
Technical Helper
Technical Helper
Posts: 319
Joined: Sunday 7th Nov 2004, 13:58
Location: UK

Re: haminternational uk /same as Colt 444 out of frequency on FM

Post by zodiac »

Hi John,
Welcome to the forum.
When you say it's off frequency on FM, do you mean the UK FM or high band as it is on that radio.
If so then adjust TC5 (the tuning capacitor) on the sub board on the left with the crystals on it and you may need to change C158 to a lower value, they are next to each other.
You'll need a frequency counter to do the job.

PS. L15 might look damaged but may still be working OK.

Dave.
How far is it.
Twice it's length from halfway.
zimbo
Dead Key
Dead Key
Posts: 14
Joined: Saturday 14th Feb 2009, 22:54
First Name: john
Location: glasgow

Re: haminternational uk /same as Colt 444 out of frequency on FM

Post by zimbo »

thanks for the info m8 trimmed the tc5 and it seems to work so thanks again (for your info it was just mid band fm)
Post Reply