KO4RUL Amateur Radio Station Connecting the World
KO4RUL – Callsign Lookup by QRZ Ham Radio
ARRL Home (American Radio Relay League)
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Our Earth has a diameter of 12,756 Km and is relatively round with bulging at the equator. In modern times humans and machine measure a Geo position to determine the longitude and latitude. From this information it can be determined the exact location someone or something is on earth. For other uses when a geographical location is needed there is the Maidenhead Grid System. In this system, longitude and latitude are divided into 18 bands, creating a world grid of 324 zones called Fields. Each Field is divided into 100 smaller units, called Squares. There are 32,400 grid squares in the world. This website is hosted on a server located in DM43bm All amateur radio station’s location is in a certain GRID SQUARE.
Amateur Radio Frequency Allocations (United States)
630 Meter Band
General, Advanced, Amateur Extra licensees:
472-479 kHz: CW, Phone, Image, RTTY/Data
*5 W EIRP maximum, except in Alaska within 496 miles of Russia where the power limit is 1 W EIRP
160 Meter Band
General, Advanced, Amateur Extra licensees:
1.800-2.000 MHz: CW, Phone, Image, RTTY/Data
80 Meter Band
Novice and Technician classes:
3.525-3.600 MHz: CW Only
General class:
3.525-3.600 MHz: CW, RTTY/Data
3.800-4.000 MHz: CW, Phone, Image
Advanced class:
3.525-3.600 MHz: CW, RTTY/Data
3.700-4.000 MHz: CW, Phone, Image
Amateur Extra class:
3.500-3.600 MHz: CW, RTTY/Data
3.600-4.000 MHz: CW, Phone, Image
40 Meter Band
Novice and Technician classes:
7.025-7.125 MHz : CW only
General class:
7.025-7.125 MHz : CW, RTTY/Data
7.175-7.300 MHz:: CW, Phone, Image
Advanced class:
7.025-7.125 MHz : CW, RTTY/Data
7.125-7.300 MHz:: CW, Phone, Image
Amateur Extra class:
7.000-7.125 MHz : CW, RTTY/Data
7.125-7.300 MHz:: CW, Phone, Image
30 Meter Band
Maximum power, 200 watts PEP. Amateurs must avoid interference to the fixed service outside the US.
General, Advanced, Amateur Extra classes:
10.100-10.150 MHz: CW, RTTY/Data
20 Meter Band
General class:
14.025 -14.150 MHz CW, RTTY/Data
14.225 -14.350 MHz: CW, Phone, Image
Advanced class:
14.025 -14.150 MHz CW, RTTY/Data
14.175 -14.350 MHz: CW, Phone, Image
Amateur Extra class:
14.000 – 14.150 MHz CW, RTTY/Data
14.150 -14.350 MHz: CW, Phone, Image
17 Meter Band
General, Advanced, Amateur Extra classes:
18.068-18.110 MHz: CW, RTTY/Data
18.110-18.168 MHz: CW, Phone, Image
15 Meter Band
Novice and Technician classes:
21.025-21.200 MHz: CW Only
General class:
21.025-21.200 MHz: CW, RTTY/Data
21.275-21.450 MHz: CW, Phone, Image
Advanced class:
21.025-21.200 MHz: CW, RTTY/Data
21.225-21.450 MHz: CW, Phone, Image
Amateur Extra class:
21.000-21.200 MHz: CW, RTTY/Data
21.200-21.450 MHz: CW, Phone, Image
12 Meter Band
General, Advanced, Amateur Extra classes:
24.890-24.930 MHz: CW, RTTY/Data
24.930-24.990 MHz: CW, Phone, Image
10 Meter Band
Novice and Technician classes:
28.000-28.300 MHz: CW, RTTY/Data–Maximum power 200 watts PEP
28.300-28.500 MHz: CW, Phone–Maximum power 200 watts PEP
General, Advanced, Amateur Extra classes:
28.000-28.300 MHz: CW, RTTY/Data
28.300-29.700 MHz: CW, Phone, Image
6 Meter Band
All Amateurs except Novices:
50.0-50.1 MHz: CW Only
50.1-54.0 MHz: CW, Phone, Image, MCW, RTTY/Data
2 Meter Band
All Amateurs except Novices:
144.0-144.1 MHz: CW Only
144.1-148.0 MHz: CW, Phone, Image, MCW, RTTY/Data
1.25 Meter Band
The FCC has allocated 219-220 MHz to amateur use on a secondary basis. This allocation is only for fixed digital message forwarding systems operated by all licensees except Novices. Amateur operations must not cause interference to, and must accept interference from, primary services in this and adjacent bands. Amateur stations are limited to 50 W PEP output and 100 kHz bandwidth. Automated Maritime Telecommunications Systems (AMTS) stations are the primary occupants in this band. Amateur stations within 398 miles of an AMTS station must notify the station in writing at least 30 days prior to beginning operations. Amateur stations within 50 miles of an AMTS station must get permission in writing from the AMTS station before beginning operations. The FCC requires that amateur operators provide written notification including the station’s geographic location to the ARRL for inclusion in a database at least 30 days before beginning operations. See Section 97.303(e) of the FCC Rules.
Novice (Novices are limited to 25 watts PEP output), Technician, General, Advanced, Amateur Extra classes:
222.00-225.00 MHz: CW, Phone, Image, MCW, RTTY/Data
70 Cm Band
All Amateurs except Novices:
420.0-450.0 MHz: CW, Phone, Image, MCW, RTTY/Data
33 Cm Band
All Amateurs except Novices:
902.0-928.0 MHz: CW, Phone, Image, MCW, RTTY/Data
23 Cm Band
Novice class:
1270-1295 MHz: CW, phone, Image, MCW, RTTY/Data (maximum power, 5 watts PEP)
All Amateurs – except Novices:
1240-1300 MHz: CW, Phone, Image, MCW, RTTY/Data
Higher Frequencies:
All modes and licensees (except Novices) are authorized on the following bands [FCC Rules, Part 97.301(a)]:
2300-2310 MHz
2390-2450 MHz
3300-3500 MHz
5650-5925 MHz
10.0-10.5 GHz
24.0-24.25 GHz
47.0-47.2 GHz
76.0-81.0 GHz**
122.25 -123.00 GHz
134-141 GHz
241-250 GHz
All above 300 GHz
** Amateur operation at 76-77 GHz has been suspended until the FCC can determine that interference will not be caused to vehicle radar systems