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APPENDIX E
Changing the Channelset
If you are still unable to find an antenna location where the unit will acquire the CDMA signals, you
may not have cellular coverage in your area or the cellular signals might be too weak in your facility.
Use the setcdmachannelset command to change your Sonoma to search PCS, rather than cellular
frequencies. (If you are in Japan, India, or Korea you will not be able to do this.) Use the cdmachannelset command to view the current setting. For more details on these commands see Chapter 9
- Console Port Control and Status. Type this at the console:
setcdmachannelset NAP
NAP means North American PCS. It takes longer for the Sonoma to search all the PCS signals so do
not be surprised if you need to wait a few hours. If your Sonoma is still unable to lock to a signal,
then continue to try for at least a day, since base stations are taken down for service from time to
time.
If you have a CDMA phone, see if it will work in digital mode. If it will, then your Sonoma should
be able to lock. Please contact EndRun Customer Support for assistance.
Using a CDMA Preamplifier
EndRun produces a CDMA Preamplifier which is a very high-performance, low-noise, low-power
drain, inline amplifier for difficult signal environments. Using the preamplifer you can use a longer
cable and locate your antenna up to 100 feet (30 meters) away from the Sonoma. This may be useful
at some facilities where the CDMA signal is poor.
There is a different preamplifier for PCS, cellular, and Japanese frequencies. So you will need to
know which type you want before ordering. An Installation Guide for installing a CDMA antenna
with preamplifer is shown in Figure 1A and 1B.
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Sonoma User Manual