EMCOMM

Pima County Emergency Management Communications: http://oemcomm.org/

Raytheon Company-Wide Over-The-Air Event

Steve Castle N7FUL Coordinator

In order to demonstrate our Emergency Communications Capabilities between the Raytheon Sites, an Over-The-Air (OTA) event is conducted quarterly. In this pre-coordinated event, the Tucson station, W7SA acts as the Net Control Station, and operates on multiple HF bands in both Phone (SSB) and digital Modes (Olivia for example). While the net is intended to contact other Raytheon sites, all stations heard from our CQ are logged and welcomed. In addition we operate the local Tucson area VHF and UHF repeaters during the event.

The final event for 2023 was:

Telecon: 13 September 2023, 1600Z - pre-coordination event
OTA: 22 September 2023, 1700Z - All pre-announced frequencies and modes from the Telecon.

A briefing package with more detail is HERE.

The following is the announcement for that event: (Stay Tuned for the 2025 event schedule.)

Please join us by participating in this quarterly event to support Emergency Communications for the Raytheon community. For this event, the W7SA station will be Net Control. Hams Local to Tucson are encouraged to check in on the 2m or 70 cm W7SA repeater, while remote sites will be joining on HF. With the upswing in solar activity, we have added an event on 10m phone. Phone and digital modes will be run on 20m and phone only on 15 m. The schedule is as follows:

On-The-Air Event

On-The-Air event to be held Friday September 22nd, 2023 at 1700 Z (10 am Tucson time)

- - - Net control will be the Raytheon Tucson W7SA station.
    - 1700 Z – 20M Phone USB 14.270 : If the frequency is busy move up or down 5 kHz.
    - 1720 Z – 15M Phone USB 21.305: If the frequency is busy move up in 5 kHz increments.
    - 1740 Z – 10 M Phone USB 28.380 : If the frequency is busy move up in 5 kHz increments.
    - 1800 Z – 20M Digital-USB. Mode - Olivia 8-500.
      - Dial Frequency USB 14071.5, 1500 HZ Offset (14073.00 Water-Fall Frequency).
    - W7SA Tucson, AZ will be taking check-ins via 70cm Repeater

- - - - Frequency (MHZ) 147.34 +0.6, PL Tone 179.9
      - Frequency (MHZ) 448.775 -5.0. PL Tone 179.9
      - W7SA-R Tucson, AZ will take check-ins via :
        EchoLink Node W7SA-R 708890 Currently Down
        Allstar 540840 Currently Down

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