Part 90 Type-Acceptance Grants & Part 97 Telecommand Carve-Outs (§ 97.211)
REGULATORY COMPLIANCE DECLARATION: Fleet communications infrastructure operates across both the Private Land Mobile Radio Services (
47 C.F.R. Part 90) and the Amateur Radio Service (
47 C.F.R. Part 97). All commercial frequencies are keyed exclusively via FCC Part 90 type-accepted hardware. In full conformity with
47 C.F.R. § 97.113(a)(4), amateur transmissions remain strictly unencrypted; cryptographic measures are deployed exclusively for station telecommand, digital authentication, and fail-safe shutdown links under
§ 97.211 and
§ 97.213.
Transmissions conducted on authorized Part 90 Business/Itinerant pool channels utilize equipment holding active Grants of Equipment Authorization issued by the Federal Communications Commission pursuant to 47 C.F.R. § 90.203:
| Make & Model |
Form Factor / Band |
Official Grant / FCC ID |
Emission Designators |
Dual Service |
| Kenwood NX-5700 |
Mobile RF Deck
VHF (136–174 MHz) |
K44471100 ↗
|
16K0F3E, 11K0F3E (Analog)
8K10F1E, 7K60FXE (P25/DMR) |
Part 90 / 97 |
| Kenwood NX-5800 |
Mobile RF Deck
UHF (450–520 MHz) |
K44471200 ↗
|
16K0F3E, 11K0F3E (Analog)
8K10F1E, 7K60FXE (P25/DMR) |
Part 90 / 97 |
| AnyTone AT-D578UV |
Mobile Transceiver
VHF / UHF Dual-Band |
T4K-D578UV ↗
|
16K0F3E, 11K0F3E (FM)
7K60FXD, 7K60FXE (DMR) |
Part 90 / 97 |
| AnyTone AT-D878UV |
Handheld Portable
VHF / UHF Dual-Band |
T4KD878UV ↗
|
16K0F3E, 11K0F3E (FM)
7K60FXD, 7K60FXE (DMR) |
Part 90 / 97 |
| TYT MD-9600 |
Mobile Transceiver
VHF / UHF Dual-Band |
POD-DMR3 ↗
|
16K0F3E, 11K0F3E (FM)
7K60FXD, 7K60FXE (DMR) |
Part 90 / 97 |
Under long-standing FCC policy and technical directives, the cross-utilization of equipment between Part 90 and Part 97 is governed by the following operational boundaries:
- Part 90 Equipment in the Amateur Service: Type-accepted commercial transceivers (Kenwood NX-series, AnyTone, and TYT commercial units) are fully authorized for operation on amateur frequencies. Part 97 places technical burdens (spectral purity, harmonic suppression, spurious emissions under 47 C.F.R. § 97.307) on the licensee rather than requiring mandatory amateur certification. Part 90 commercial type-acceptance exceeds Part 97 emission standards.
- Amateur Equipment Restriction: Equipment lacking an official FCC Part 90 Grant is strictly software-inhibited and blocked from transmitting on any Part 90 commercial pool frequencies.
- Channel Separation & Memory Partitioning: Fleet transceivers utilize strict codeplug partitioning, segregating Part 90 business frequencies from Part 97 amateur repeater and simplex channels into separate display zones.
¶ 3. Cryptographic Protocols & Telecommand Carve-Out Declaration
In full accordance with Federal Communications Commission regulations, all RF transmissions generated across fleet stations strictly maintain separation between open payload traffic and encrypted command infrastructure:
| Operational Domain |
Governing Regulation |
Technical Implementation & Safeguards |
| Amateur Voice & APRS |
47 C.F.R. § 97.113(a)(4)
|
Strictly Plaintext / Open Protocol: Transmissions on amateur bands (analog FM, DMR Tier II, P25, AX.25 APRS) are completely unencrypted. No digital scrambling, privacy keys, or proprietary ciphers are active on amateur talkgroups or simplex frequencies. |
| Station Telecommand & Remote Shutdown |
47 C.F.R. § 97.211(b)
47 C.F.R. § 97.213(c)
47 C.F.R. § 97.109(d)
|
Authorized Cryptographic Telecommand: Cryptographic protocols (SSH public key authentication, WireGuard tunnel encapsulation, SHA-256 challenge tokens, and protected DTMF sequences) are deployed exclusively for auxiliary links, node telemetry, remote system administration, and fail-safe transmitter shutdown. Under federal law, securing control links against unauthorized tampering does not constitute prohibited message obfuscation. |
| Commercial Part 90 Operations |
47 C.F.R. Part 90 Subpart I
|
Commercial Digital Privacy: Authorized encryption (DMRA standard 256-bit AES / ARC4) on Part 90 licensed channels is restricted solely to official business channels and is locked out from transmitting on amateur spectrum. |
Skyenix Infrastructure • Hardware Manifest & Encryption Repository • Omaha, NE • Universal Licensing System Records Verified