EmComm.Life — Frequency Plans

NIFOG VHF Interoperability Channels

National Interoperability Field Operations Guide — VHF mutual-aid simplex channels. PL 156.7 Hz required on all channels. ⚠ These are public safety (P25) frequencies — amateur operators MONITOR ONLY. Transmit only when authorized by a served agency under Part 97.403.

Frequency (MHz)	Mode	PL/CTCSS/DCS	Purpose / Net Name	Net Schedule	Notes
155.7525	FM	156.7	VCALL10 — National Calling	—	MONITOR ONLY — Primary VHF interop calling channel
151.1375	FM	156.7	VTAC11 — Tactical	—	MONITOR ONLY — VHF tactical channel
154.4525	FM	156.7	VTAC12 — Tactical	—	MONITOR ONLY — VHF tactical channel
158.7375	FM	156.7	VTAC13 — Tactical	—	MONITOR ONLY — VHF tactical channel
159.4725	FM	156.7	VTAC14 — Tactical	—	MONITOR ONLY — VHF tactical channel

NIFOG UHF Interoperability Channels

National Interoperability Field Operations Guide — UHF mutual-aid simplex channels. PL 156.7 Hz required on all channels. ⚠ These are public safety (P25) frequencies — amateur operators MONITOR ONLY. Transmit only when authorized by a served agency under Part 97.403.

Frequency (MHz)	Mode	PL/CTCSS/DCS	Purpose / Net Name	Net Schedule	Notes
453.2125	FM	156.7	UCALL40 — National Calling	—	MONITOR ONLY — Primary UHF interop calling channel
453.4625	FM	156.7	UTAC41 — Tactical	—	MONITOR ONLY — UHF tactical channel
453.7125	FM	156.7	UTAC42 — Tactical	—	MONITOR ONLY — UHF tactical channel
453.8625	FM	156.7	UTAC43 — Tactical	—	MONITOR ONLY — UHF tactical channel

Federal 60-Meter Interoperability Channels

Shared federal/amateur 60-meter channels. USB mode, 2.8 kHz bandwidth. Center frequencies shown — these are channelized, not band segments.

Frequency (kHz)	Mode	PL/CTCSS/DCS	Purpose / Net Name	Net Schedule	Notes
5330.5	USB	—	Channel 1	—	SHARES / EmComm interop
5346.5	USB	—	Channel 2	—	SHARES / EmComm interop
5357.0	USB	—	Channel 3	—	SHARES primary EmComm channel
5371.5	USB	—	Channel 4	—	SHARES / EmComm interop
5403.5	USB	—	Channel 5	—	SHARES / EmComm interop

WC-ARES — Williamson County VHF/UHF

Williamson County ARES ICS-217 — VHF/UHF repeaters and simplex channels. Source: District 7 ICS-217 v9.C, Nov 2025.

Frequency (MHz)	Mode	PL/CTCSS	Channel / Purpose	Chan ID	Notes
147.080 (+)	FM	100.0	WC-ARES Primary Repeater	V708R	WC5EOC — primary activation repeater
146.640 (−)	FM	162.2 TX / CSQ RX	WC-ARES Secondary — N5TT Linked	V64R	Echolink; linked with V45R (145.450)
145.450 (−)	FM	162.2 TX / CSQ RX	WC-ARES East (Taylor) — N5TT Linked	V45R	Echolink; linked with V64R (146.640)
146.700 (−)	FM	110.9	WC-ARES Tertiary Repeater	V70R	N5MNW repeater
444.650 (+)	FM	100.0	WC-ARES On-Scene Portable Repeater	U465R	Portable UHF repeater
444.525 (+)	FM	100.0 TX / CSQ RX	WC-ARES UHF Repeater	U525R
442.200 (+)	FM	100.0	K5AB Repeater	U20R
443.300 (+)	FM	88.5	Walburg UHF Repeater	U330R
147.430	FM	CSQ	WC-ARES Primary Simplex	W43S	Tactical 1 — primary simplex fallback
147.500	FM	CSQ	WC-ARES Secondary Simplex	W50S	Tactical 2
146.415	FM	CSQ	Trailer Operations / Convoy	V6415S	Tactical 3
146.505	FM	CSQ	WC-ARES VHF Simplex	V6505S	Tactical 4
146.535	FM	CSQ	WC-ARES VHF Simplex	V6535S	Tactical 5
146.550	FM	CSQ	WC-ARES VHF Simplex	V6550S	Tactical 6
446.025	FM	CSQ	WC-ARES UHF Simplex	U6025S	Tactical 7
446.050	FM	CSQ	WC-ARES UHF Simplex	U6050S	Tactical 8
446.075	FM	CSQ	WC-ARES UHF Simplex	U6075S	Tactical 9
445.780	FM	162.2	UHF Cross-Band Frequency	U-XBAND	Cross-band repeat

WC-ARES — Digital / ARCHES (Winlink)

ARCHES (Amateur Radio Communications for Hospital Emergency Support) Winlink packet/VARA frequencies. Digital mode — no voice.

Frequency (MHz)	Mode	PL/CTCSS	Channel / Purpose	Chan ID	Notes
144.910	Digital	CSQ	ARCHES Hospital Net	RMS491	Winlink Packet/VARA FM RMS
145.030	Digital	CSQ	ARCHES Hospital Net	RMS503	Winlink Packet/VARA FM RMS
145.070	Digital	CSQ	ARCHES Hospital Net	RMS507	Winlink Packet/VARA FM RMS
145.610	Digital	CSQ	ARCHES Hospital Net	RMS561	Winlink Packet/VARA FM RMS
145.730	Digital	CSQ	ARCHES Hospital Net	RMS573	Winlink Packet/VARA FM RMS

WC-ARES — HF

Williamson County ARES HF frequencies for NVIS regional coverage. NVIS antennas recommended for short-skip intrastate paths.

Frequency (MHz)	Mode	PL/CTCSS	Channel / Purpose	Chan ID	Notes
5.373 USB	USB	—	WC-ARES NVIS Primary (60m Ch 5)	WC-ARES NVIS	60m — 100W ERP max; NVIS primary
3.888 LSB	LSB	—	WC-ARES HF Secondary (75m)	WC-ARES HF	75m NVIS secondary
7.222 LSB	LSB	—	WC-ARES HF Tertiary (40m)	WC-ARES HF	40m NVIS tertiary
3.873 LSB	LSB	—	STX ARES HF Net (75m NVIS)	STX ARES HF 80M	Mon 0030Z — Texas ARES net check-in
7.285 LSB	LSB	—	STX ARES HF Net (40m NVIS)	STX ARES HF 40M	Texas ARES net primary HF frequency
3.993 LSB	LSB	—	Texas Traffic Net	—	Daily 0015Z — NTS region traffic net

SKYWARN

NWS SKYWARN severe weather spotter activation frequencies. During activations, monitor the WilCo ARES primary repeater for net control instructions.

Frequency (MHz)	Mode	PL/CTCSS/DCS	Purpose / Net Name	Net Schedule	Notes
147.080	FM	100.0	SKYWARN Primary (WC5EOC)	On activation	WC-ARES primary repeater; +600 kHz offset
146.640 / 145.450	FM	162.2	SKYWARN Secondary (N5TT linked)	On activation	Linked repeater system; -600 kHz offset
147.430	FM	—	Simplex Fallback	On activation	WC-ARES primary simplex if repeaters are down

SATERN

Salvation Army Team Emergency Radio Network — HF nets providing disaster welfare traffic and coordination.

Frequency (MHz)	Mode	PL/CTCSS/DCS	Purpose / Net Name	Net Schedule	Notes
14.265	USB	—	SATERN 20m Net	Daily 1700Z	Primary SATERN net — welfare traffic
7.265	LSB	—	SATERN 40m Net	Daily 1730Z	40m SATERN net — welfare traffic

HF Emergency & Traffic Nets

Key HF emergency and National Traffic System nets for message handling, emergency coordination, and welfare traffic relay.

Frequency (MHz)	Mode	PL/CTCSS/DCS	Purpose / Net Name	Net Schedule	Notes
7.290	LSB	—	TERT — Texas Emergency Radio Traffic	—	Texas statewide emergency traffic
3.873	LSB	—	Texas ARES HF Net	Mon 0030Z	75m Texas ARES coordination net
7.251	LSB	—	NTS Central Area Net	—	National Traffic System — Central Area
14.300	USB	—	Intercontinental Traffic / Emergency	—	International emergency and traffic net