SARNET (FL) radio memory labeling system

Crestview(WEVOKA)….. Islamorada (KNHMON)

Amateur (ham) radios can display frequencies or memory labels. Circa 2005, while responding to a tornado touchdown, the need to be able to advise another person what repeater to switch to, real-time, was born. That system uses the last three digits of the frequency and a representation of the town the repeater is in. This is how active hams refer to local repeaters. The up to six(6) character string can be texted to one or more persons quickly. Receipt of the text means “meet me on this repeater”. Example 135 RO. This labeling system was released in 2006 and is found on the IRARC website linked here.

However, SARNET, being a Florida state-wide system, should perhaps best be referred to by the county the repeater is in, not the town, as the town is seemingly one level too low. And, in addition to the county, why not add in a component of the State of Florida’s preferred coordinate system? A user from one part of the state, temporarily in another part of the state, with desire to maintain contact with SARNET, will not have the ties to the local repeaters, will not know them or the city references. The user will surely know what region of the state they are in at the time and may or may not know what county they are in. If they are with emergency services they should be familiar with US National Grid. In Florida, there are two Grid Zones, 16R and 17R, but by design there are no repeated 100 KM IDs in the state. Thus, the 100 Km ID in combination with the county can also uniquely geo-reference the location of each SARNET repeater.

The SARNET radio memory label format is recommended as: Florida Region (W, N, C, S or K), the USNG 100 Km ID, a three character representation of the county the repeater is in. If effect, the labeling system is not unlike zoom on a web map display; low, medium and high zoom. Low zoom is the Florida Region and high zoom is the county. The Florida Regions will allow grouping of SARNET frequencies by large geographical area within a user’s radio.

Florida SARNET regions, West, North & Central
Florida Regions of West(all 16R), North, Central, South and Keys, all by USNG 100 Km ID

There is a standard list of Florida County abbreviations that will be used and it is linked here.

So, with the interest of getting this out to those that can use it, a few examples will be provided. Over time full listing of SARNET abbreviations by this labelling system may be added.

Examples: (with GMap4 links)

West Florida: Crestview, USNG: 16R EV, Okaloosa County. Label: WEVOKA

North Florida: Yulee, USNG: 17R MP, Nassau County. Label: NMPNAS

Central Florida: Lakeland, USNG: 17R MM, Polk County. Label: CMMPOL

South Florida: Naples, USNG: 17R MJ, Collier County. Label: SMJCLR

Florida Keys: Islamorada, USNG: 17R NH, Monroe County. Label: KNHMON

With respect to determining present geolocation by US National Grid, check out websites USNGAPP.org and FindMeSAR.com on any GPS enabled smartphone or tablet. Additionally, articles at this page can provide significant information: https://medium.com/@USNGFlorida

A recommendation to the SARNET team, please consider a USNG overlay map showing 100 Km ID grids and tower locations. Free web tools GMap4 and Mission Manager exist.

Contact information: USNG08….at…gmail…dot…com