A list of operational frequencies are listed below. Local operations are typically on VHF and UHF while state and nation-wide operations are typically on HF.
VHF/UHF Frequencies
|
Frequency (MHz) |
Offset |
CTCSS (Hz) |
Description |
|
146.985 |
– |
156.7 |
CALV01 – Sunderland repeater If repeater is down use output frequency and transmit tone. |
|
444.950 |
+ |
156.7 |
CALV02 – Prince Frederick repeater If repeater is down use output frequency and transmit tone. |
|
146.580 |
S |
CALV03 – Calvert Tac Three | |
|
146.595 |
S |
CALV04 – Calvert Tac Four | |
|
146.565 |
S |
CALV05 – Calvert Tac Five | |
|
146.550 |
S |
CALV06 – Calvert Tac Six | |
|
446.100 |
S |
CALV07 – Calvert Tac Seven | |
|
446.125 |
S |
CALV08 – Calvert Tac Eight | |
|
146.520 |
S |
2m National Simplex | |
|
446.000 |
S |
70cm National Simplex | |
|
147.105 |
+ |
107.2 |
Central Region Primary (Davidsonville) |
|
146.760 |
– |
Central Region Secondary | |
|
145.330 |
– |
Central Region Tertiary | |
|
144.390 |
Nationwide APRS | ||
|
145.750 |
Local Winlink Gateways (WB3KAS-10, W3RL-10, KB3FWW-10) |
||
|
144.990 |
Alternate APRS |
HF Frequencies
|
Frequency (MHz) |
Description |
|
28.350 |
CALV09 – Calvert Tertiary (+/- 10 kHz) |
|
28.290 |
CALV10 – Calvert HF Data (+/- 10 kHz) |
|
3.820 |
Maryland Emergency Phone Net – LSB |
|
3.5919 |
NTSD (W3JY, WB2FTX, KW1U, and others) |
|
3.557 |
Maryland-DC-Delaware Net – CW |
|
3.563 |
Maryland Slow Net – CW |
