During the week of February 25 – March 1, the City of San Diego’s 800 MHz Radio Network will be reconfigured. The anticipated sequence of events is as follows:
Monday, February 25th
Technicians will organize and prepare for the work. Network users will not experience any changes or degradation of network performance on this day.
Tuesday, February 26th
Technicians will report to the radio sites for baseline testing of the current radio configuration. The test procedures may affect a very small percentage of network resources. Users may experience a busy signal upon keying their radio.
Busy Signals
Radio users that hear a busy signal (sounds like a telephone busy signal) should unkey their radio and wait for a quick tone from their radio before rekeying. This quick tone is a “talk permit tone” notifying the user that the channel is now ready for use. Rekeying a radio prior to this “talk permit tone” will cause the user to drop to the bottom of the queue.
Wednesday, February 27th
At approximately 12 PM, the radio network channel resources will be reduced to 70% of capacity. With this reduction in resources, users may experience minimal busy signals. This will continue throughout the night. We request that users minimize radio traffic.
Thursday, February 28th
Throughout this day, users should minimize radio traffic as much as possible and anticipate busy signals.
To reduce demand for limited talk path resources:
1. School Transportation should operate on the Palomar repeater channel.
2. Paramedics should use County RCS talkgroups when working with the hospital
emergency staff.
Starting at 4 AM, the radio network channel resources will be reduced to less than 50% of capacity. As the morning progresses, users should anticipate channel busies during the reconfiguration. Individual channel resources will be brought back on line as soon as each channel is reconfigured.
Radio technicians will support dispatch locations to provide updates to dispatch staff. Technicians may also instruct dispatchers to utilize backup radios for a short period of time as radio consoles may be unavailable for a few minutes.
By 6 PM, radio network channel resources will be back to approximately 70% of normal capacity. Some users may notice a busy signal upon keying their radio. This will continue throughout the night. Users should reduce radio traffic whenever possible.
Friday, March 1st
Reconfiguration of the network continues. Technicians will bring channel resources back on line as each channel is completed. Radio technicians will support dispatch locations to provide updates to dispatch staff.
All radio network reconfiguration should be completed by 6 PM and normal operations should resume.
