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Established

1999

RCI8719 PLL
 

Models

This PLL is now fitted to Unidens that say "Made in Malaysia" on the back panel. This chip is a clone of the MB8719 with a few changes..

The VCO will become unstable when it is expanded out of the normal 'FCC' channels.
Pin10 (divide by Ncode) has to left 'floating' if you tie it HIGH or LOW the VCO again becomes unstable and will not lock on. The only way to modify this radio is to replace the RCI8719 PLL with the older MB8719 PLL. The resistor near Pin9 needs to be removed and a jumper wire with a ferrite bead put in its place to  reconnect power to pin 9. As this radio is not as broad banded as previous Unidens it might not be worth the expense of the new chip

(THE SCREWDRIVER EXPERTíS" GUIDE By Lou Franklin, K6NH)

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