|
MARC Standards |
||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|
|
||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|
Home
| Bylaws | Standards | Band Plan | Procedures | Resolutions |
||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|
|
||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2. Remote receivers shall be configured so that their
coverage area lies within the coordinated coverage area of the repeater. 3. Exceeding the coverage radius limits can be cause
for revocation of the station's coordination. 4. All new coordinations will include a 25 mile
separation from adjacent channel coordinations. 5. All new coordinations, except SNPR class, will be
greater than 120 miles from any existing coordinated co-channel repeaters.
(This is reciprocal for any new out-of-state repeaters per Great Lakes
Council meeting September 1989.) To better serve
the amateur community and to better utilize our amateur spectrum. As of April
2, 1996 all new repeater coordinations must cover a min coverage of 10 miles
radius. Existing repeaters must have a minimum coverage of 10 miles radius by
April 2, 1997 excluding snappers. If a repeater system cannot accrue a
minimum coverage the council will re-evaluate the system for re-allocation. 6. The Coordinator will use the location of
transmitter, antenna elevation, beam direction, ERP, polarization, terrain
and adjacent channel use to determine the distance between One Way Link
transmitters. Repeater type spacing is not required. 7. The Coordinator will use the protected radius of
the repeater to determine Control cochannel assignments. (minimum 25 Miles)
Example: Regional 55 mile protection and District 40 Miles - distance between
assignments is 95 Miles. Two SNPR Controls would be 50 Miles. Adjacent
channel will not be considered unless interference is encountered. Repeater
type spacing is not required. Repeaters with more than one site (transmitter
and links) should use one control frequency for their complete system if
possible.
B.
Shared Non-Protected
Repeater (SNPR) coordination class.
2. CTCSS access is required and the specific tone
shall be assigned by the appropriate coordinator. 3. Frequency pairs are as follows:
4. Any attempt to evolve to a larger coverage radius
will result in de-coordination of the repeater. 5. Trustees and sponsors agree to accept co-channel
and adjacent channel interference from other repeaters provided that those
other repeaters are being operated in accordance with their coordination
parameters. 6. Where interference is being caused to any non-SNPR
system, it shall be the responsibility of the SNPR trustee to work with the
appropriate coordinator to resolve the problem. 7. Although no out-of-state communication is required
to coordinate a SNPR, care must be taken to avoid creating an interference
problem with existing out-of-state operations.
C.
No new coordinations
will be allowed in the Local coordination class.
D.
Quadrant coordination
class.
2. To maintain Quadrant status, the applicant must
document that coverage of the coordinated coverage radius does in fact exist.
This will be accomplished with annual submission of an operational report, a
coverage radius map, an updated system diagram, and evidence of user need, as
approved by the membership.
E.
The standard for
testing the repeater's coverage radius shall be a mobile station with a
center roof-mounted antenna with an ERP of 25 watts. This can be a 25 watt
radio with a quarter-wave antenna or a 15 watt radio with a 5/8 wave antenna.
Using this equipment, a mobile station is inside a repeater receiver's
coverage radius if the system is receiving the mobile station at least an 80%
copy 100% of the time. Inversely, for testing repeater transmitters, a mobile
station using a 5/8 wave antenna is inside a repeater transmitter coverage
radius if the mobile station is receiving the repeater's transmitter at least
an 80% copy 100% of the time. All tests should be made at average terrain
during non-enhanced band conditions.
F.
Any coordinated
repeater operating within its coordination parameters at the
time of adoption of these standards shall be grandfathered at those
parameters. 1.
If
updates by submitting a Technical Data Sheet (from the system sponsor) are
not received a minimum of once every two years the (MARC) coordinator may
withdraw the Co-ordination Authorization. 2. When a determination has been made, by means of
research (to be documented by the Frequency Coordinator) that a frequency
pair has not been in use for sixty days, the Frequency Coordinator will send
an inquiry by certified mail, return receipt requested, to the trustee and
sponsor of record. Should no response be received within thirty days from the
date of receipt of this letter, or if the letter be returned as not
deliverable, the coordination of the frequency pair will be rescinded. If the
trustee responds within thirty days, in writing to the coordinator and the
chairman of M.A.R.C., requesting that the coordination be maintained, at the
discretion of the Board, any further action may be stayed for up to ninety
days. 3. If the repeater is moved more than 5 miles from the
original location without notification to the M.A.R.C. coordinator and
chairman, COORDINATION IS AUTOMATICALLY WITHDRAWN. 4. In the event of the sale of a coordinated repeater,
the coordination of the repeater will have a temporary status for the period
of 60 days, UNTIL THE SELLER RELINQUISHES THE FREQUENCY COORDINATION IN
WRITING (sent to the frequency coordinator and chairman by U.S.P.S. mail, and
the buyer agrees to all of the coordination guidelines, and the unmodified
coordination has been approved by the coordinator. IF THESE TERMS CANNOT BE
MUTUALLY AGREED UPON BY ALL PARTIES, THE COORDINATION WILL BE CONSIDERED
VOID. 5. (Holders of frequency coordination, IE: sponsors
and trustees) who terminate their coordination as a result of the sale or
transfer of their system, or for other reasons with the intent not to resume
such operation shall notify the Coordinator and Chairman of the termination
within 30 days of the cessation of the operation and the surrender of the
frequency involved. The Coordinator will then entertain requests for eligible
applicants for the use of the frequency, IN THE BEST INTERESTS OF AMATEUR
RADIO AND THE PUBLIC SERVICE.
II.
Band
Plans. A. All band plans shall be in accordance with the ARRL
recommended band plans as listed in the ARRL Repeater Directory, 1989-90
edition, except as noted below.
Non-standard pairs or offsets will not be coordinated. B. 50 MHz Band
C. All activities above 51.100 are on 20 KHz
channels
D. 144 MHz Band
The following frequency
pairs are to be utilized for repeater coordinations. All offsets will be 600
KHz, except SNPRs. The division of the band segments will be made in 20 KHz
increments.
E. For packet operations, the following channels will
be protected from coordinated operations.
F. 222 MHz Band
The following
frequency pairs are to be utilized for repeater coordinations. All offsets will
be 1.6 MHz. The division of the band segments will be in 20 KHz
increments.
G. The following frequencies are to be allocated to
voice links. The division of this band segment will be in 20 KHz increments.
Transmitter power output is limited to 10 watts.
H. A statewide control link frequency of 222.320 is
allocated to any trustee desiring a 222 MHz control frequency. For packet
operations, the following channels will be protected from coordinated
operations.
I.
420 MHz Band The following
frequency pairs are to be utilized for repeater coordinations. All offsets
will be 5 MHz. The division of the band segment will be in 25 KHz
increments.
The following
frequencies are to be allocated to voice and control links. Reserved packet
and simplex frequencies are also indicated. The division of these band
segments will be in 25 KHz increments. Transmitter power output is limited to
10 watts for link transmitters.Please follow the link below to view the 440
Band Plan for Voice and
Control links, ATV, Packet, Simplex and Repeater Frequencies. J. 902 MHz Band
(33cm) The purpose of
this section is to place a uniform and specific written documentation
concerning coordination and cooperation in the use of the 33cm spectrum as
allocated to Amateur Radio by the FCC in accordance with statements made in
Article I of the MARC Bylaws. Frequencies
Covered: 902.0000 MHz to
928.0000 MHz
|
||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|
|
||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|
Guidelines: Repeaters: The following is criteria
to be met for the coordination of repeaters in the 33cm band. Repeater
frequencies must fit into the bandplan as stated above. Repeater
owner/Trustee must comply with rules concerning TDS submission as stated in
the MARC Bylaws. Co-Channel Protection Distance: No
repeater shall be given a protection distance of more than 50 miles without a study
clearly showing the need for such. This study can be done using methods
outlined elsewhere in this document. The protection distance of a
coordinated repeater may be less than 50 miles, but shall not exceed
50 miles without a
propagation study indicating the need for additional protection distance. Adjacent Channel Protection : Repeaters
using adjacent channels shall have a minimum physical distance between
transmitters. This distance shall be determined by using half of the
distance of the Protection
Radius of the repeater with the largest protection distance. Definitions: Channel.
– Frequencies within a given spectrum with designated spacing to provide
uniformity in frequency utilization. Co-Channel.
– A common frequency shared between two coordinated repeaters. Adjacent
Channel. – A channel that falls either immediately before or after the
desired operating frequency. Protection
Distance. – The minimum physical distance between two transmitters. Protection
Radius. – The averaged distance from the transmitter that the transmitted
signal is useable by a receiver of reasonable sensitivity. Coverage Prediction
Study: Coverage
prediction shall be done in one of three ways. 1: Accept the minimum
protection radius as the maximum coverage area. 2: True coverage area
study done with calibrated test equipment. 3: Approved software
designed to provide coverage modeling. Coverage
area is to be defined as an average distance of coverage from the Repeater
transmitter based on a signal of at least -110 dBm in 75% of locations 75
% of the time. This translates roughly to a signal that is useable by an
average user
listening to a voice repeater in a mobile situation with a radio of average receive capability (roughly 0.3 microvolts). |
||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|
|
||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|
|
||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Adapted from MARC Standards, REV 01
2 December 1989, as amended
|
||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|
|
||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|
Section J 902 MHz Band(33cm)
was added to MARC Standards on June 4, 2005 by voice vote, after being in use
as Resolution # 3, since September 2003. |