# yaml-language-server: $schema=../../../../../../_schema/ssrf-lite-0.10.0.schema.json
$schema: "../../../../../../_schema/ssrf-lite-0.10.0.schema.json"
ssrf_lite_version: "0.10.0"
ssrf_lite:
  sources:
    - name: "RepeaterBook - N9BBM Repeater, Chicago, IL (reviewed 2025-10-12)"
      url: "https://www.repeaterbook.com/repeaters/location_search.php?state_id=17&type=city&loc=Chicago"
      accessed: "2026-09-09"

organizations:
  - id: org_n9bbm
    name: "N9BBM Chicago Loop Repeater (Nate Russell, N9BBM)"

locations:
  - id: loc_chicago_wbbm_studio
    name: "Chicago - WBBM-TV (CBS) Studio rooftop, the Loop (approx)"
    lat: 41.8832
    lon: -87.6285

stations:
  - id: stn_n9bbm_440
    call_sign: "N9BBM"
    organization_id: org_n9bbm
    location_id: loc_chicago_wbbm_studio
    service: "amateur"

antennas:
  - id: ant_n9bbm_440
    station_id: stn_n9bbm_440
    name: "WBBM-TV Rooftop Antenna"
    gain_dbi: null
    height_agl_m: null
    height_amsl_m: null

# rx = repeater downlink (what you hear), tx = uplink (what you send)
rf_chains:
  - id: chain_n9bbm_440_fm
    station_id: stn_n9bbm_440
    antenna_id: ant_n9bbm_440
    tx:
      freq_mhz: 441.900
      emission: "16K0F3E"
      bandwidth_khz: 25
    rx:
      freq_mhz: 446.900 # +5.000 MHz input
    mode:
      type: "FM"
      ctcss_rx_hz: 100.0
      ctcss_tx_hz: 100.0
      notes: >-
        Open repeater, all licensed amateurs welcome. Privately owned and
        operated by Nate Russell, N9BBM, from the WBBM-TV studio rooftop.
        Roughly 5 mi coverage radius over the Chicago Loop. Weekly net
        Sundays at 19:00 America/Chicago.

authorizations:
  - id: auth_fcc_amateur
    authority: "FCC"
    service: "amateur"
    class: "Technician or higher"
    identifier: null
    notes: "Transmit requires US amateur license. Open access to all licensed operators."

assignments:
  - id: asgn_n9bbm_440_fm
    short_name: "N9BBM"
    channel_name: "N9BBM 441.90"
    rf_chain_id: chain_n9bbm_440_fm
    usage: "repeater"
    authorization_id: auth_fcc_amateur