REPEATER SUB-BAND BANDPLAN 144.5 - 145.5 MHZ

Repeaters in the spectrum between 144.500 to 145.500 MHZ utilize a "low in-high out" configuration, on nineteen even numbered frequency pairs. Frequency pairs begin with 144.52/145.12 MHZ and end with 144.88/145.48 MHZ. Spacing is 20 kHz between repeater systems, and 600 kHz between repeater input and output. 144.74/145.34 MHZ is a "Clear frequency for Baja California operations" by agreement with the Baja Coordination Council. 144.86/145.46 MHZ is operated on a shared basis with limited range, both in Southern California & Baja California. We urge all U.S. Amateurs to abide by these agreements.

Frequency pairs 144.56/145.16 & 144.88/145.48 are multi-coordinated to "Private category" repeaters only. No "open" or "closed" category operations. All other frequency pairs are for "open" & "closed" category operations. All FM systems operating in this spectrum are required the use of CTCSS tone access, with "open" category tone access assigned by the technical committee at time of coordination. "Private" & "closed" category systems may choose their own CTCSS access tone, however it must be approved by theTechnical Committee at time of coordination to prevent duplication with another system on the same frequency pair. All repeater pairs are coordinated to two or more systems.

 

REPEATER SUB-BAND BANDPLAN 146-148 MHZ

15 kHz spacing between repeaters utilizes "Inverted Tertiary Coordination Process", yielding 49 repeater pairs. Unless otherwise noted, input to output is 600 kHz. Simplex operation is nationally accepted on 30 kHz spaces and on their 15 kHz tertiaries.

All repeater pairs are shared using geographic separation to achieve necessary isolation between repeaters. By agreement with Mexico, 146.82 and 146.91 MHZ are operated on a shared basis with limited range Southern California operations and 146.97 & 147.33 MHz are "Clear frequency" for their exclusive use. A multiple coordination accessibility system is available between Baja, TASMA, & NARC to avoid duplication of coordination requests for systems whose intended coverage overlaps two or more geographic coordination areas.

 

LIST OF ESTABLISHED SOCA AREA SIMPLEX SPECIAL USE FREQUENCY ASSIGNMENTS

144.345   ATV 144.390   APRS - Digital 144.490/144.950/145.550  SAREX 146.430   ATV 146.460   Remote Base Channel 146.520   National Simplex Frequency 146.550   National Simplex Frequency 146.565   T-Hunt Frequency 146.580   National Simplex Frequency 147.510   National Simplex Frequency 147.540   National Simplex Frequency 147.570   National Simplex Frequency

 

ESTABLISHED AREA REPEATER EXCEPTIONS:

144.895 WB6LFC Input	145.495 Output
145.495 WD6FAB Input	144.895 Output
146.400 W6NUT Input	147.435 Output
146.415 W6FP Input	147.450 Output
146.475 WA6BGS Input	147.420 Output
146.475 AA6RJ Input	147.420 Output
146.505 WB6PFW Input	147.460 Output
146.505 W6VLD Input	147.465 Output
147.405 KA6NCR Input	144.970 Output

No new exceptions to the above band-plan are allowed with out changing this plan.

ATTACHMENT 1

List of Repeater Co-ordinations:

See TASMA Coordinated Repeater List 11/20/00

The Coordination of these Repeater Frequencies will be performed by the TASMA Technical Committee.

 

ATTACHMENT 2

Information Listing of Simplex Users and Nets:

This note is an attempt to explain just what TASMA is doing with the Simplex Operation on Two Meters. This is not an attempt to assign or even coordinate simplex nor is it an attempt to channelize the band. It is simply a list of currently known simplex users, just a catalog of existing simplex operations in SoCA.

Why? The band is crowded. Yes, even the simplex operation is very crowded. For instance, you can not find a wide area frequency for 24/7 Code Practice. If you wanted to have a net for the discussion of "Betas and their color" on Friday nights at 7 PM, what frequency would you use? Hopefully this TASMA simplex catalog will help you find a frequency without having to try 2 dozen first, just to find out you were interfering with some other nets.

TASMA is mandated by the Amateur Community to perform frequency management on Two Meters. This simplex catalog ( 05/16/01) is an attempt to provide a service for all of its Users.