Operator error?

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Can someone explain something to me about the "Search DB" tab on the P25RX.
I have 9 active control channels that I use in roaming mode but, when not in roaming
the scanner only monitors the primary control channel as it should. So what is the purpose
of the check boxes "add primary" "add secondaries" and "add neighbors" when it states that
these are only active when roaming is disabled.
When I have roaming disabled, the P25RX only monitors one control channel and
one receive site. Is it actually using primary, secondaries, and neighbors and just not showing it in display view?
Display view always reports the site and zone it is receiving (which is nice).
ZONE: $RFSS_ID$ SITE: $SITE_ID$

(I also am anxiously waiting for the new MicroP25RX)
 

wmlovell

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Aurora, OH
Those check boxes work with the "Gen Sys Info" button when you are not roaming.
 

FreqNout

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Jul 23, 2021
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Chicagoland
When I have roaming disabled, the P25RX only monitors one control channel and
one receive site. Is it actually using primary, secondaries, and neighbors and just not showing it in display view?
I also have roaming disabled on my P25RX.
My understanding of the secondary and neighbor channels relates to a rotating primary Control Channel during non roaming mode.
I have seen my primary CC rotate to an alt CC. My P25RX switched to the alt CC and continued rx during the non roaming mode. Ymmv. @btt may be able to better comment on how it all works in the P25RX firmware.
 

btt

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The options for "add primary, add secondary, and add neighbor" will populate fields in the table on the SearchDB tab. In order for the auto-population to work, you have to be tuned to an active P25 control channel. It will only do this if you currently have roaming disabled. After the table has been populated with secondaries, neighbors, you can easily select the rows in the table and <add selected to roaming flash>. After that, enable the roaming option, and set the timeout value to a high value like 99999. Now when the signal for your primary control channel is lost, the receiver will search for secondary and alternate frequencies for an active control channel. This is the easy way to auto-configure automatic switch-over. Hope this helps.
 
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