Scott and Group, As VP Coordination for the ARCC I have been asked by a number of our users to consider establishing a STRICTLY VOLUNTARY coordination program for DD and other digital "non-repeater" modes.
We (ARCC) are experiencing fairly rapid D* and DD growth and strive to provide for the needs of our users. As a DD site owner / administrator, what is it you might seek from coordination? I expect that "protection" from interference might be one issue but are there others? Please take a look at our current ARCC repeater coordination form: <http://www.arcc-inc.org/CoordinationApplicationInstructionsRev_C.pdf> and see what applies and, more importantly, what is missing for a prospective DD site owner / administrator. My intent is to investigate the mechanism required to create a coordination process specifically for "non-repeater", digital use. Having no experience with either D* or DD, Some questions immediately come to mind: - Can a DD channel be shared in the same manner as an AX.25 system? - Does DD perform CMSA or is it a "blind" system? - Does DD operate on a single channel or can it be operated on a "split" (pair) of channels? How is it "normally" used? - What is the definition of "interference" in a DD system? - What is the result of "interference"? - What level of interference is "tolerable" - What is the "true" (measured) receiver sensitivity for a DD central station and at what BER? Any information provided will help me in my quest to satisfy the needs of my user community, Bill Powell - WB1GOT VP Coordination - ARCC Inc. --- In dstar_digital@yahoogroups.com, "Scott" <n...@...> wrote: > > As a repeater owner I'm thinking I would like to have the minimal protection > offered by the coordination process. The "repeaters" may be frequency agile > but a 1.2G triplexer is not. Additionally, the local frequency coordinators > are responsible for publishing my frequency to the ARRL and other potential > repeater owners/users locally. > > After reading Part 97.205 and 97.3.a.39 it appears the FCC is only recognizes > simultaneously broadcasted duplex signals as repeaters needing coordination. > The Icom DD mode "repeater" fails both requirements. > > My questions are - > > 1) As a repeater owner, would you rather be coordinated? > > 2) Is there a reasonable alternative to coordination? > > 3) Should this be something we pursue with the FCC? > > Thanks, > > Scott N7SS >
