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OARS NBEMS Band Plans

28 Mhz Band Plan

For EMC Message Transfer Operations

PSK/MFSK/MT63

PSK-31 Beacons 

SSB Voice/SSTV Alt. SSB/SSTV FM/SSTV
28.130 28.303 Calling 28.600 Calling 29.200
28.133 28.306 28.603 29.220
28.136 28.309 28.606 29.240
28.139 28.312 28.609 29.260
28.142 28.315 28.612 29.280
28.145 28.318 28.615  
28.148  28.321 28.618  
28.151 28.324 28.621  
28.154      
28.157      
28.160      
28.163      
28.166      
28.169      
28.172      
28.175      
28.178      
28.181      
28.184      
28.187      

Note:

  • To avoid AGC pumping with two transmitters at same location, use different bands.

  • To avoid AGC pumping from local stations within 5 miles, use channels far removed from each other and/or use narrow IF filter when doing weak signal work at high power.

  • If band is busy, use alternate Frequencies above 28.6Mhz.
     

 

50 Mhz EMC Frequencies

All Mode 3Khz Channels

 AM 6 Khz FM all Mode Packet/FM digi
50.303PSK-31 bcns 50.400 50.500 50.600
50.306 50.406 50.520 50.620 packet calling
50.309 50.412 50.540 50.640
50.312 50.418 50.560 50.660
50.315 50.424 50.580 50.680 SSTV
50.318 50.430   50.700
50.321 50.436   50.720
50.324 50.442   50.740
50.327 50.447   50.760
50.330     50.780
50.333      
50.336      
50.339      
50.342      
50.345      
50.348      
50.351      
50.354      
50.357      
50.360      
50.363      
50.366      
50.369      
50.372      
50.375      
50.378      
50.381      
50.384      
50.387      
50.390      
50.393      
50.396      

Note:

  • Stations on 50 Mhz may not be compatible with 144 Mhz.  So plan on using all modes and stay on 50 Mhz band for a given location. Use the dual VFOs. If 144 Mhz traffic, stop tx on 50 Mhz.

  •  All-mode 3 Khz channels use for: SSB voice, SSTV, digi modes up to MT63-2000. Get assigned to a channel to pass traffic and stay there for all above modes.

  • AM channels are for information purposes. Someone may be using them during band openings.

  • FM all-mode channels you may negotiate with voice, and with full-quieting signal, pass text traffic with fast PSK-250  or SSTV image. Use plenty of power/ or are close in.

  • FM Packet/digi channels are for packet or FM PSK text...no voice.

Band Plan for Digital Modes on 144 Mhz

145.500

145.510

145.525

145.565

145.580

145.550 Space Shuttle, ISS

These are for “misc and experimental modes” so you may mix voice and digital.

 

 

 

Packet

  
145.010 145.030 Local  
145.050 Nearest Node: Berryessa Pk  
144.910 Nearest Node: St. John Mtn. Emergency Net http://www.n0ary.org/ncpa/
144.390 APRS nearest nodes: Cohasset, Mt.Vaca http://www.cave.org/aprs/aprsinfo.html