Rred,
I think this might be the paragraph in Part 90 you are referring to, correct me if I'm wrong:
§90.20 Public Safety Pool.
(a) Eligibility. The following are eligible to hold authorizations in the Public Safety Pool
(2) Persons or organizations other than governmental entities are eligible to hold authorizations in the Public Safety Pool to operate radio stations for transmission of communications, as listed below. When requesting frequencies not designated by a “PS” in the coordinator column of the frequency table in paragraph (c)(3) of this section, applications must be accompanied by a statement from the governmental entity having legal jurisdiction over the area to be served, supporting the request:
(vii) Organizations established for disaster relief purposes having an emergency radio communications plan for the transmission of communications relating to the safety of life or property, the establishment and maintenance of temporary relief facilities, and the alleviation of the emergency situation during periods of actual or impending emergency, or disaster, and until substantially normal conditions are restored. In addition, the stations may be used for training exercises, incidental to the emergency communications plan, and for operational communications of the disaster relief organization or its chapter affiliates. The initial application from a disaster relief organization shall be accompanied by a copy of the charter or other authority under which the organization was established and a copy of its communications plan. The plan shall fully describe the operation of the radio facilities and describe the method of integration into other communications facilities which normally would be available to assist in the alleviation of the emergency condition.
There are "low power" frequencies available in the "Public Safety Pool" that are limited to 2 watts:
§90.267 Assignment and use of frequencies in the 450-470 MHz band for low power use.
None of that limits radios to only 2 watts, it only says that on those specific frequencies, 2 watts is the highest allowed ERP. It also doesn't single out specific frequencies for CERT use.
The FCC rules are very convoluted and can be quite confusing. Having read through them, there isn't any place where CERT is singled out or given specific frequencies. Looking at 90.20, a CERT team could possibly qualify for Part 90 frequencies, but this doesn't negate the need for frequency coordination, licensing, or following the technical rules. In fact, it specifically says:
"applications must be accompanied by a statement from the governmental entity having legal jurisdiction over the area to be served, supporting the request:"
It also doesn't give CERT teams access to any and all frequencies in the public safety pool. Licenses will still apply to specific listed frequencies.
Your local agencies may welcome CERT being on their primary frequencies, they may even supply radios, but this is not standardized across the nation. CERT teams cannot just purchase radios and program them up on public safety frequencies without authorization. The rules regarding licensing still apply. Under normal (non-emergency or STA's) your CERT group would be required to have an FCC license, or direct written permission from any licensee granting you use of their system.
There are NO frequencies set aside for CERT specifically. There is a public safety pool of frequencies, but these require specific licensing. There are also "interoperability" frequencies, but these also have requirements.
I'd caution against taking bits and pieces of the rules and fitting them together to suit assumed needs. There is nothing in the FCC rules that allow CERT groups to operate independently of the rules, without proper licensing or without properly type accepted radios. It would be appropriate and highly recommended to talk to a public safety frequency coordinator about your CERT teams needs. This should also include discussions with your agency sponsor.
There are certainly frequencies that are commonly used. That includes the 155.160 Search and Rescue frequency, as well as VFire, VLaw, VMed, VTac and VCall, as well as their similar channels in the VHF Low, UHF, 700 and 800MHz bands. These still have specific rules that apply to their usage, and are not open for everyone and anyone to use.
If your local CERT team has the money for all this radio gear, your group would certainly be in the minority. Most volunteer organizations are poorly funded, and need what little funding they do have to purchase specific gear. While radios are useful, they certainly shouldn't be the only tool in a CERT teams toolbox. A radio doesn't do much to provide for the immediate needs of the victim, and shouldn't be the only tool you carry. A good first responder can do their job without a radio. In an emergency, communications are important, but so is a lot of other skills. Don't loose site of this and just focus on the radio.