This webpage originally tracked Summit Smartnet "800" migrations to the P25 system ID 6F4. As of the week of January 14th 2019 all talk-groups began moving to the Summit County MARCS system. This page will use archived radio ID to talk-group associations to try to identify new MARCS TGs.

Stats are updated every 30 minutes. Each column can be sorted. A legend for the color scheme is at the bottom of the page.

How to use this info:

Every row of the tables below is a talk group on the new Summit County MARCS site where at least one transmission was seen. The hits column is a counter of how many times we've seen transmissions on that TG since the First Heard date. Keep in mind a bunch of back-to-back transmission can be counted as a single hit by this system. The "RIDS Heard" column reveals all of the unique radio IDs hard on that talk-group. Immediately following that list will be a list of "old" talk-groups from the Summit County P25 system where those radios were last tuned to before moving to the new system. In some cases a single talk-group will appear, in some cases many will appear, and in some cases none will appear. A radio that showed up on a MAC or Fire Ground channel may be misleading - that talk group may be something else. So its important to use this data below to clarify the context of transmissions you hear on the unidentified talk groups.

Data last modified: September 12 2023 13:26:01.

New Summit County MARCS TGs heard for the first time in the last 72 hours:

(Default sorted by First Heard date/time. Column headers re-sort) fetchArray(SQLITE3_ASSOC)){ $bg800=""; $bgp25=""; $p25_dec = $res['p25_dec']; $desc = $res['desc']; $dec_800 = $res['dec_800']; $alpha_800 = $res['alpha_800']; $hits_p25 = $res['hits_p25']; $hits_800 = $res['hits_800']; $last_p25 = $res['last_p25']; $last_800 = $res['last_800']; $first_heard = $res['first_heard']; # color the last heard columns to show deviation $l8sec = strtotime($last_800); $lp25sec = strtotime($last_p25); if ($l8sec) { if ($lp25sec > $l8sec) { $dif = $lp25sec - $l8sec; if ($dif > 86400) { $bgp25 = "green"; #$bg800 = "red"; } # do inverse of above if } if ($l8sec > $lp25sec) { $dif = $l8sec - $lp25sec; if ($dif > 86400) { #$bgp25 = "red"; $bg800 = "green"; } } #if either dif is < 3600 both green if ($dif < 3600) { $bgp25 = "green"; $bg800 = "green"; } } else { $bgp25 = "green"; #$bg800 = "red"; } if ($dec_800 == "N/A") { $bg800 = "black"; } ?>
MARCS Dec n/a Alpha Hits n/a Last Heard n/a First Heard RIDs Heard
This is a hover over which could have a very large amount of text...

All Summit County MARCS Activity

(Default sorted by highest hits. Column headers re-sort) query($sql);//->fetchArray(SQLITE3_ASSOC); $i = 0; # [p25_dec] => 2353 # [desc] => # [dec_800] => N/A # [alpha_800] => # [hits_p25] => 1 # [hits_800] => 0 # [last_p25] => 2018-02-06 06:14:49 # [last_800] => # [first_heard] => 2018-02-06 06:14:49 ?> fetchArray(SQLITE3_ASSOC)){ $bg800=""; $bgp25=""; $p25_dec = $res['p25_dec']; $desc = $res['desc']; $dec_800 = $res['dec_800']; $alpha_800 = $res['alpha_800']; $hits_p25 = $res['hits_p25']; $hits_800 = $res['hits_800']; $last_p25 = $res['last_p25']; $last_800 = $res['last_800']; $first_heard = $res['first_heard']; # color the last heard columns to show deviation $l8sec = strtotime($last_800); $lp25sec = strtotime($last_p25); if ($l8sec) { if ($lp25sec > $l8sec) { $dif = $lp25sec - $l8sec; if ($dif > 86400) { $bgp25 = "green"; $bg800 = "red"; } # do inverse of above if } if ($l8sec > $lp25sec) { $dif = $l8sec - $lp25sec; if ($dif > 86400) { $bgp25 = "red"; $bg800 = "green"; } } #if either dif is < 3600 both green if ($dif < 3600) { $bgp25 = "green"; $bg800 = "green"; } } else { $bgp25 = "green"; $bg800 = "red"; } if ($dec_800 == "N/A") { $bg800 = "black"; } ?>
MARCS Dec N/A Alpha Hits N/A Last Heard N/A First Heard RIDs Heard

Color Legend

  • The color means nothing in this version at this point in time.

    Time Explained - updated 2/8/18

    This system started logging Summit P25 (6F4) transmissions and radio IDs on the night of Feburary 5th, 2018 and Summit MARCS activity on January 16th, 2019. In the old version the time stamps were meant to compare/contrast between the 800mhz and 6F4 system to determine when a given talk-group had clearly transitioned.

    How I'm gathering the data...

    Numerous Software Defined Radio (SDR) RTL dongle systems are monitoring both digital systems control channels almost never missing a TG event. Each time a transmission is detected the database is updated. However, the corresponded database is only pushed from my house to the website every 30 minutes. Also, the "RIDS Heard" data is done immediately after a talk-group first appears, as well as nightly to see if any additional radios joined that talk group over the first three days.

    To discuss Summit Digital Radio activity visit the Summit County 800 System forum