by Jun 30, 2018


After a major earthquake, modern communication devices will likely fail us. Cell networks will be damaged or jammed, landlines will be down, and internet will not be functioning. Two-way radio will be our best method for communicating long distances post-earthquake, and amateur radio operators will be in high demand.

Disasters that are more familiar also demonstrate the need for amateur radio.  On Sunday, December 2, 2007, a Force 3 hurricane hit the Oregon North Coast.  In Oregon, it topped out at 126 mph.  The coast lost all line-power, all landlines, and all cell towers.  Authorities soon discovered that their satellite phones could not penetrate the storm’s dense raincloud cover.  All roads were closed, sealed off by fallen trees.  Highways US 30, US 26, US 101, OR 6, and 22 were closed.  The North Coast was isolated and silent.  The State cannot declare an emergency for one of its jurisdictions; only the county can initiate this request.  The only means the counties on the coast had to declare this emergency to State authorities in Salem was by amateur radio.  Only then could the State send emergency services and supplies to the coast.

Amateur radio will be important to NETs in a disaster, but other radios can play different, important roles as well.   As NET members, we will also be using unlicensed and perhaps some commercial radios.  For this reason, we step back and look at radio more broadly.

NET Radio Overview

NET members will use radio communication in several ways.  Different uses will have different requirements.  Some communication will naturally be local, while other communication must be across the city or even farther.  Because cost and complexity tend to follow the capability of a radio, it is useful to understand enough about the different needs and radio features to make good choices.

Diagram showing paths that radio communication can take

As illustrated in the figure above, NET participants will have several different kinds of communications needs.  NET tactical communications (intra-team) will typically be short range, between perhaps a few hundred feet to perhaps as much as two miles.

Much of the NET intra-team communication will take place among rover teams, performing search and rescue (SaR) operations.   These two- to four-person teams typically will not have much experience operating radios, much less personal radio licenses like amateur radio licenses.  Several kinds of radio, however, will meet this requirement.

FRS radios do not require a special operating license.   GMRS radios are more powerful than FRS radios, and they do require an operating license, but the license requires only the payment of a modest fee and is good for ten years.  We discuss FRS and GMRS radios on the page by that name.

NETs that need to coordinate their resources to address larger or expansive problems (inter-team) may need to communicate five or six miles.  Rover Team C in the figure above, for example, could belong to a different NET than that in figure’s staging area.  To communicate over obstacles and for greater distances, the advantages of amateur are helpful.  These include special antennas, better power supply, and higher transmission power.  For this situation, the NET Program has secured special UHF channels.  The page NET ARO UHF Frequencies describes those channels.

Because the Portland Emergency Coordination Center (ECC) will be coordinating, radio communications across the entire city and around obstacles like hills will be necessary.  Communication across larger area and among more operators requires more efficiency and experience.  Formal message handling skills and experience with large, directed radio nets are critical.  The pages on Ham Radio and the ARO Certification Program delve further into these subjects.

The Comms Section of Your Operating Plan

A natural question to ask is, where are these procedures spelled out?  The practices that need to be uniform across the NET Program and across the City appear in Section 900 of the Portland NET Guidelines.  For example, the section discusses additional features of various radios, and the suggested FRS channels for each NET appear here.  Section 900 also identifies amateur radio practices.  The channels and nets that NET amateur radio operators join in a disaster appear there.  Section 900 outlines the procedures for finding more training and obtain certification as a NET Amateur Radio Operator (ARO).  (Be aware, however, that because Section 900 has not been updated since March 2016, the description of FRS/GMRS rules is out of date.  More up-to-date information appears in the FRS/GMRS pages of this web site.)

Many of the details of how your particular NET will use radios and AROs, however, is left up to the Communications Section of your NET’s Operating Plan.  The PBEM NET Program does not dictate these.  Instead, each NET is expected to write up these choices in the Communications (or Comms) section of its Operating Plan.  The Comms section  is where the NET will address such important questions as the following.

  1. How will NET members communicate with each other immediately following a disaster?
  2. How will the NET Amateur Radio Operator (ARO) communicate with the Portland Bureau of Emergency Management’s Emergency Coordination Center (ECC)?
  3. Where will the ARO Deploy?
    1. Staging Area?
    2. Home?
    3. Fire Station?
    4. BEECN?
    5. Somewhere else, like a served agency?
  4. If appropriate, how will the ARO remain in contact with the Team Leader?
  5. If there are multiple AROs, who is primary or “designate” ARO, and what is the protocol to replace the primary ARO? What jobs will supporting AROs have?
  6. If your team has no ARO, what arrangements has the team made to avail themselves of an ARO, perhaps borrowed from another, nearby team?
  7. What tactical call sign will your NET use?  (Remember, it should be short, easily identifiable as a Portland neighborhood, and free of acronyms or hyphenated names that will be confusing to others unfamiliar with your NET.)
  8. Which FRS/GMRS channels will be used?
  9. What should be in radio go-kits for ARO and FRS users?
  10. How will you deal with any propagation issues?  This may include propagation maps for the neighborhoods the NET will cover
  11. How do you plan to cooperate with surrounding teams?  Have you coordinated channel use with other NETs that use your channel?
  12. Will you have amateur radio requirements that go beyond the NET ARO training?  These might include
    1. Practice type and frequency
    2. Participation in particular nets
    3. Membership in ARRL’s Amateur Radio Emergency Services
  13. Will you have training and standards for all members who might use a radio, including FRS radios?  The team might require non-AROs to have knowledge about how to check in with FRS, understanding ITU phonetics, tactical message handling, and knowing when not to speak and what not to say
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