User Guide

Nokia Customer Care RF Description and Troubleshooting
6235/6235i/6236i (RM-60)
Issue 1 04/2005 ©2005 Nokia Corporation Company Confidential Page 25
Transmitter UHF LO
Tx UHF LO Schematic
There are two fixed LOs; 3296.16~3395.88MHz for cell band and 3700~3819.90MHz for
PCS band. This is the first LO for up-conversion. Refer to frequency plan.
Monitor control voltage at C7014. At this control voltage the N7000 LO is locked, should
be between 1.2 and 1.8VDC.
Figure 20: UHF LO Schematic
Lock Voltage
Loop Filter