[Premium-Rx] REGCO RG-5500 Restoration

[Борис Никитин]

HI All,

If anyone knows whats mean special symbol-small triangle near some components (resistors) on circuit diagrams of  VHF/UHF receiver RG-5500 by REGCO company?
I already asked my good friend in USA who got the Manual for that receiver, but no any information about there.

For my opinion it's probably means two things: 
1) Components marked with small triangle may require some selection and adjustment 
2)  Components with very tight tolerance

Any ideas?
Thanks.

Best Regards.
Boris


 
Борис Никитин