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Posted

Are you sure it is not 7.68MHZ ?
Mouser has several in-stock

7.6MHz Crystals

http://www.mouser.com/search/Refine.aspx?Ne=1447464+254016&Ntt=*7.6*%2b*MHz*%2b*Crystal*&Msb=0&Mkw=7.6+MHz+Crystal&N=1323038

IN-STOCK ITEMS

Mouser Part #: 520-HCA768-20X IN-STOCK
Manufacturer Part #: ECS-76.8-20-1X 7.68
Manufacturer: ECS
Description: HC-49/U Microprocessor Crystals 7.68 MHZ 20pF


Mouser Part #: 695-CS20-768 IN-STOCK
Manufacturer Part #: CS20 7.680MABJ-UT
Manufacturer: Citizen
Description: CS20 SMD Crystals CS20 SMD Crystals 7.68 MHZ 18pF CERAMIC SMD
Datasheet
http://www.citizencrystal.com/images/pdf/ms-cs20.pdf

Mouser Part #: 520-HCU768-20X IN-STOCK
Manufacturer Part #: ECS-76.8-20-4X
Manufacturer: ECS
Description: HC-49/U-S Microprocessor Crystals 7.68 MHZ 20pF

NON-STOCK ITEMS

Mouser Part #: 695-HC49US-768-U
Manufacturer Part #: HC49US7.680MABJ-UB
Manufacturer: Citizen
Description: HC49US Radial Leaded Crystals HC49US Radial Leaded Crystals 7.680 MHz 18pF HC49S THROUGH HOLE

Datasheet
http://www.citizencrystal.com/images/pdf/ms-hc49us.pdf

Mouser Part #: 695-CM309S-768-U
Manufacturer Part #: CM309S7.680MABJ-UT
Manufacturer: Citizen
Description: CM309S SMD Crystals CM309S SMD Crystals 7.680 MHZ 18pF PLASTIC SMD

Datasheet
http://www.citizencrystal.com/images/pdf/ms-cm309s.pdf

Mouser Part #: 695-CSA309-768-U
Manufacturer Part #: CSA309 7.680MABJ-UB
Manufacturer: Citizen
Description: Crystals 7.680MHz

Datasheet
http://www.citizencrystal.com/images/pdf/ms-csa.pdf


Posted

This Micromitter project explains what happens to the RF frequencies when a 7.68Mhz crystal is used instead of the 7.6MHz one in the datasheet for the BH1417 IC:
http://electronics-diy.com/BH1417_PLL_Stereo_FM_Transmitter.php

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