Radio Symptom and Cure Database
Add A Record
Excaliber, Galaxy Base and etc.
VCO not locking on frequency's over full range (26.065 - 28.305)
1. Replace TR29 with a 2SC1675
2. R143 with 330 ohm
3. R144 with 10K ohm
4. R145 with 470 ohm
5. C87 with a 10pf
6. C88 with a 7pf
7. Insure that a 7V zener is installed from pin1 (VCC) to pin 18 (COM) of PLL 145106.