Dominican Society of Amateur Radio INC (SDRA)

Notes

1 - ACDS may be used with caution on appropriate frequencies, not to exceed the maximum BW specified for the segment. ACDS should not cause interference to point-to-point and DX communications.

2 - The band is allocated on a Secondary basis in Region 2. Primary users are Fixed and Maritime Mobile stations.

Notes

1 - ACDS may be used with caution on appropriate frequencies, not to exceed the maximum BW specified for the segment. ACDS should not cause interference to point-to-point and DX communications.

2 - The band is allocated on a Secondary basis in Region 2. Primary users are Fixed and Maritime Mobile stations.

Notes 

1 - ACDS may be used with caution on appropriate frequencies, without exceeding the maximum BW specified for the segment. ACDS should not cause interference to point-to-point and DX communications.

2 - For DM, use a maximum BW of 200 Hz.

3 - The band is allocated on a Primary basis in Region 2. Radiolocation and Radionavigation stations are also Primary users in the range 1850 - 2000 kHz.

(*) AM DSB telephony is allowed with a maximum BW of 6 kHz.

Notes

1 -The band should be avoided for local networks; rather, use adjacent amateur radio bands or alternative domestic channels on 5 MHz (where available under ITU Article 4.4 RR).

2- The band is allocated on a Secondary basis in Region 2. Fixed and Mobile Stations (except Aeronautical Mobile) are the Primary users. Not all countries in Region 2 have approved operations in this band yet and some specify frequencies different from those in this band plan.

Notes

(*) AM DSB telephony is allowed with a maximum BW of 6 kHz.

1 - The band is allocated on a Primary basis in Region 2, except that the use of the band 7200-7300 kHz in Region 2 by the Amateur Service shall not impose limitations on the Broadcasting Service intended for use within Region 1 and Region 3.

Notes

1 -Radio beacons on CW should be avoided.

2 -The band is attributed to Secondary title in Region 2.

3 -Fixed stations are the primary users.

Notes

1 - The band is allocated on an exclusive Primary basis in Region 2.

(*) AM DSB telephony is allowed with a maximum BW of 6 kHz.

Notes

1 - The band is allocated on an exclusive Primary basis in Region 2.

Notes

1 - The band is allocated on an exclusive Primary basis in Region 2.

2 - Amateur Radio satellite uplink signals are permitted in the 21125 to 21450 kHz sub-band on a non-exclusive basis. Satellite designers and operators should avoid causing interference to International Beacon Project (IBP) transmissions on 21150 kHz.

(*) AM DSB telephony is allowed with a maximum BW of 6 kHz.

Notes

1 - The band is allocated on an exclusive Primary basis in Region 2.

Notes

1 - The band is allocated on an exclusive Primary basis in Region 2.

Notes

1 - The band is allocated on a Primary exclusive basis in Region 2. Note that broadcasting stations are the primary users in Region 1.

(*) AM DSB telephony is allowed with a maximum BW of 6 kHz.

Notes

1 -Satellite designers and operators using this section should not transmit below 144.0025 MHz, so that there is a necessary protection band at the lower limit of the band.

2 - 144.490 MHz may be used for FM voice uplinks to the International Space Station. Priority should be given to this activity when required.

3 - In the Caribbean region, the frequency 145.010 MHz must be protected for APRS operation.

4 - The band is allocated on a Primary basis exclusively in Region 2.

Footnotes

1 - The band is allocated on an exclusive Primary basis in Region 2, but is shared with Fixed and Mobile as other Primary users and Radiolocation as Secondary user. Not all countries in Region 2 have access to the full band.

Notes

1 - For countries without the full 430-450 MHz Amateur Service range, the 430-432 MHz and 438-450 MHz segments should be used according to local options.

2 - The band is allocated on a Secondary basis in Region 2. Primary users include Fixed, Mobile and Radiolocation stations.

ACDS: Automatic Data Controlled Stations, including store-and-forward stations (does not include digital voice repeaters or voice over internet gateways). In the case of digital radio beacons, it is recommended to include CW in the operating scheme for non-machine recognition and to use the narrowest possible bandwidth (BW). ACDS are allowed only when expressly specified in the segment (except those aboard satellites and spacecraft capable of transmitting on specific satellite segments and aboard Near Space Stations. See "NSS"). Unattended operations are restricted on HF (see "Unattended Transmitting Stations").

AM: A maximum bandwidth (BW) of 6 kHz is suggested for Amplitude Modulated Double Side Band (AM DSB) telephony. An AM signal may be transmitted when: a) the segment is allowed for "all modes" with sufficient bandwidth; b) the BW field is marked with "(*)", which allows AM with a maximum BW of 6 kHz.

Bandwidth (BW): The suggested maximum bandwidth determines the maximum spectral width (-6 dB points) of all emissions allowed in a segment. Output power and modulation levels should be adjusted so as not to exceed the maximum expected BW. Unless specified, there shall be no restrictions on the respective segments. Best practices should be observed to avoid interference to adjacent bands.

Broadband Applications: Broadband applications can be used for any combination of high-speed data (e.g., 802.11 protocols), amateur radio television, and other high-bandwidth activities. The division into channels and/or separation of uses within these segments can be done on a regional basis based on needs and usage.

ARDF: Very low power temporary beacons specifically dedicated to Amateur Radio Direction Finding (ARDF) events. They may transmit with due caution on any frequency, with the exception of "exclusive" use segments, where ARDF is not allowed. BW and mode suggestions for the segment should be followed and the usual occupancy of the band in the related area should be carefully observed to avoid harmful interference. In cases where propagation may allow reception beyond regional boundaries, additional precautions should be taken to ensure harmonization with the different assignments. ARDF should not cause interference to other applications.

Application: The application column indicates the use of a segment. In case only one application (or set of applications) is allowed exclusively, the word "exclusive" is added.

Upper Sideband (USB) and Lower Sideband (LSB): For SSB phone operations below 10 MHz, use lower sideband (LSB); above 10 MHz, use upper sideband (USB). Exception: on the 60 meter band (5.3 MHz), the best practice is to use upper sideband (USB).

Single Side Band (SSB), Amplitude Modulation (AM) and Frequency Modulation (FM): These modes are mentioned in the band plan for analog voice communications only (not for Digital Modes or Digital Voice).

Emergency Communications: Amateur Radio Emergency Communications takes priority over all other uses, especially on its specified frequencies during rescue operations.

Contests: No contests should be held in the 2200 m (136 kHz), 630 m (472 kHz), 60 m (5.3 MHz), 30 m (10 MHz), 17 m (18 MHz) and 12 m (24 MHz) bands. Non-contesting radio amateurs are encouraged to also use the free bands during major international competitions. It is recommended that Member Societies publish the operational segments clearly in their contest rules and that these segments be considered with due respect to the IARU band plans.

CW: Continuous Wave (CW) Telegraphy (A1A) QSOs are allowed throughout the band, but should be avoided on segments assigned to radio beacons or repeater inputs.

DM: Digital Modes: Any mode dedicated to digital data communication that has the bandwidth and application suggested for the segment (does not include Digital Voice or Voice Gateways to the Internet). Examples: RTTY, PSK, FSK, etc.

DV: Digital Voice: Any mode based on coded digital voice, restricted to the specified bandwidth and applications of the segment. Non-voice digital content should be a supplementary data set and not the primary purpose of the communication, except during emergency communications. Digital Voice users should first check that the channel is not in use by other stations and modes (including analog).

Unattended transmitting stations: IARU Member Societies are requested to limit this activity on the HF bands. It is recommended that any unattended transmitting station on HF be activated only under the control of an operator, except for Radio Beacons agreed with the IARU Radio Beacon Coordinator or experimental stations with special licenses.

Frequencies: The frequencies advertised in the band plan should be understood as.

"transmission frequencies" and not those of the suppressed carrier.

IBP: International Beacon Project: Aworldwide network of high frequency beacons organized by IARU that share the same single frequency per band (20, 17, 15, 12 and 10 meters).

IVG: Internet Voice Gateways: Simplex DV/FM communications interconnected over the Internet (via VoIP and/or related systems) to establish a network. IVGs are allowed only when specifically specified in the segment.

Picture modes: Any analog or digital imaging mode with the appropriate bandwidth for the segment. Examples: Slow Scan Television (SSTV) and Facsimile (FAX).

NSS - Near Space Stations: Equipment located at temporary stations in near space (such as those aboard high altitude balloons). They may transmit with caution on any frequency, except on "exclusive" use segments where "NSS" are not allowed. NSS should respect the BW and modes suggested for the segment and carefully observe the usual occupancy of the band in the related region to avoid harmful interference. For longer missions and NSS crossing international or regional borders, special care should be taken to harmonize the different assignments.

Primary: Primary service authorized to use the specific frequency band in accordance with the ITU Radio Regulations for Region 2. Secondary users shall not cause interference to Primary users. Note that there may be more than one Primary user.

Point-to-point QSO: All frequencies can be used to establish point-to-point QSOs with the specified mode and BW. However, segments dedicated to radio beacons, repeaters and satellites should be avoided.

Repeaters: The repeaters mentioned in the band plan are for voice traffic. They may also carry auxiliary data, in the case of DV mode repeaters. The input segments may also be used for authorized links and controls related to the particular repeater input. Repeaters are permitted only when specified directly on the segment (except for those aboard satellites and spacecraft capable of transmitting on specified satellite segments and aboard Near Space Stations. See "NSS").

Secondary: A secondary service authorized to use the specified band of frequencies in accordance with the ITU Radio Regulations for Region 2:

1. a) They must not cause harmful interference to stations of a primary service to which frequencies have previously been assigned or may be assigned in the future;
2. b) They cannot claim protection against harmful interference caused by stations of a primary service to which frequencies have been previously assigned or may be assigned in the future;
3. c) They may claim protection against harmful interference caused by stations of the same service or of other secondary services to which frequencies are assigned at a later date.

Band usage: The suggested usage of each segment of a band is defined by the combination of three characteristics: mode, maximum bandwidth (BW) andapplication.

The following additional terms can be found in the Band Plan:

ATV - Amateur Radio Television

DX - Long distance or rare stations

EME - Earth-Moon-Earth, or "moon-bounce" communications.

QRG - Q code that refers to frequency.

QRP - Q code that refers to low power operations.

QRS - Q code that refers to low speed CW operations.