Downloaded each sat message and ran it through file on the CLI.

Sat Message Types

messages/122:        PNG image data, 128 x 32, 8-bit/color RGBA, non-interlaced
messages/123:        ASCII text, with CRLF line terminators
messages/124:        PGP message
messages/125:        PNG image data, 75 x 75, 8-bit/color RGB, non-interlaced
messages/126:        ASCII text
messages/127:        ASCII text, with no line terminators
messages/128:        ASCII text, with very long lines, with no line terminators
messages/129:        ASCII text, with no line terminators
messages/130:        ASCII text, with very long lines, with no line terminators
messages/131:        ASCII text, with very long lines, with CRLF line terminators
messages/132:        PGP RSA encrypted session key - keyid: 60D73C6C 89DDF4F1 RSA (Encrypt or Sign) 4096b .
messages/133:        PNG image data, 345 x 345, 8-bit/color RGB, non-interlaced
messages/134:        ASCII text
messages/135:        UTF-8 Unicode text, with very long lines, with CRLF line terminators
messages/136:        PGP RSA encrypted session key - keyid: 60D73C6C 89DDF4F1 RSA (Encrypt or Sign) 4096b .
messages/137:        ASCII text, with very long lines, with no line terminators
messages/138:        UTF-8 Unicode text, with very long lines
messages/139:        PGP RSA encrypted session key - keyid: 60D73C6C 89DDF4F1 RSA (Encrypt or Sign) 4096b .
messages/140:        PGP RSA encrypted session key - keyid: 60D73C6C 89DDF4F1 RSA (Encrypt or Sign) 4096b .
messages/141:        ASCII text, with no line terminators
messages/142:        UTF-8 Unicode text, with very long lines, with CRLF line terminators
messages/143:        ASCII text
messages/144:        UTF-8 Unicode text, with no line terminators
messages/145:        ASCII text, with very long lines, with no line terminators
messages/146:        UTF-8 Unicode text, with very long lines, with CRLF line terminators
messages/147:        ASCII text, with very long lines, with no line terminators
messages/148:        UTF-8 Unicode text, with very long lines, with CRLF line terminators
messages/149:        ASCII text, with very long lines, with no line terminators
messages/150:        UTF-8 Unicode text, with very long lines, with CRLF line terminators
messages/151:        UTF-8 Unicode (with BOM) text, with CRLF line terminators
messages/152:        UTF-8 Unicode (with BOM) text, with CRLF line terminators
messages/153:        ASCII text
messages/154:        UTF-8 Unicode text, with very long lines, with CRLF line terminators
messages/155:        UTF-8 Unicode text, with very long lines, with CRLF line terminators
messages/156:        UTF-8 Unicode text, with very long lines, with CRLF line terminators
messages/157:        UTF-8 Unicode text, with very long lines, with CRLF line terminators
messages/158:        MPEG ADTS, layer III, v1, 128 kbps, 44.1 kHz, Stereo
messages/159:        JPEG image data, JFIF standard 1.01, resolution (DPI), density 96x96, segment length 16, Exif Standard: [TIFF image data, big-endian, direntries=1, orientation=upper-left], baseline, precision 8, 168x152, frames 3
messages/160:        JPEG image data, JFIF standard 1.01, resolution (DPI), density 96x96, segment length 16, Exif Standard: [TIFF image data, big-endian, direntries=1, orientation=upper-left], baseline, precision 8, 100x102, frames 3
messages/161:        JPEG image data, JFIF standard 1.01, resolution (DPI), density 96x96, segment length 16, Exif Standard: [TIFF image data, big-endian, direntries=1, orientation=upper-left], baseline, precision 8, 239x116, frames 3
messages/162:        UTF-8 Unicode text, with very long lines, with CRLF line terminators
messages/163:        ASCII text, with no line terminators
messages/164:        ASCII text, with no line terminators
messages/165:        UTF-8 Unicode text, with very long lines, with CRLF line terminators
messages/166:        ASCII text
messages/167:        Bourne-Again shell script text executable, ASCII text, with CRLF line terminators
messages/168:        UTF-8 Unicode text, with very long lines, with CRLF line terminators
messages/169:        UTF-8 Unicode text, with very long lines, with CRLF line terminators
messages/170:        UTF-8 Unicode text, with very long lines, with CRLF line terminators
messages/171:        diff output text, ASCII text, with CRLF line terminators
messages/172:        JPEG image data, Exif standard: [TIFF image data, big-endian, direntries=4], baseline, precision 8, 500x470, frames 3
messages/173:        JPEG image data, Exif standard: [TIFF image data, big-endian, direntries=4], baseline, precision 8, 164x154, frames 3
messages/174:        ASCII text, with CRLF line terminators
messages/175:        UTF-8 Unicode text, with very long lines, with CRLF line terminators
messages/176:        ASCII text, with no line terminators
messages/177:        UTF-8 Unicode text, with very long lines
messages/178:        JPEG image data, Exif standard: [TIFF image data, big-endian, direntries=9, manufacturer=Apple, model=iPhone 6s Plus, xresolution=144, yresolution=152, resolutionunit=2, software=11.3, datetime=2018:06:08 16:25:37, GPS-Data], baseline, precision 8, 500x500, frames 3
messages/179:        ASCII text, with CRLF line terminators
messages/180:        JPEG image data, Exif standard: [TIFF image data, big-endian, direntries=9, manufacturer=Apple, model=iPhone 6s Plus, xresolution=144, yresolution=152, resolutionunit=2, software=11.3, datetime=2018:06:08 16:25:37, GPS-Data], baseline, precision 8, 500x500, frames 3
messages/181:        ASCII text
messages/182:        ASCII text
messages/183:        ASCII text
messages/184:        UTF-8 Unicode text, with very long lines, with CRLF line terminators
messages/185:        ASCII text
messages/186:        JPEG image data, JFIF standard 1.01, resolution (DPI), density 72x72, segment length 16, Exif Standard: [TIFF image data, big-endian, direntries=5, orientation=upper-left, xresolution=74, yresolution=82, resolutionunit=2], baseline, precision 8, 28x53, frames 3
messages/187:        UTF-8 Unicode text, with very long lines, with CRLF line terminators
messages/188:        ASCII text, with no line terminators
messages/189:        ASCII text, with no line terminators
messages/190:        ASCII text, with no line terminators
messages/191:        ASCII text, with no line terminators
messages/192:        UTF-8 Unicode (with BOM) text
messages/193:        UTF-8 Unicode (with BOM) text
messages/194:        ASCII text, with no line terminators
messages/195:        ASCII text, with no line terminators
messages/196:        PGP message Public-Key Encrypted Session Key (old)
messages/197:        PGP message Public-Key Encrypted Session Key (old)
messages/198:        PGP message Public-Key Encrypted Session Key (old)
messages/199:        PGP message Public-Key Encrypted Session Key (old)
messages/200:        PGP message Public-Key Encrypted Session Key (old)
messages/201:        ASCII text
messages/202:        UTF-8 Unicode text, with very long lines, with CRLF line terminators
messages/203:        ASCII text, with CRLF line terminators
messages/204:        UTF-8 Unicode text, with very long lines, with CRLF line terminators
messages/205:        UTF-8 Unicode text, with CRLF line terminators
messages/206:        ASCII text, with no line terminators
messages/207:        UTF-8 Unicode text, with CRLF line terminators
messages/208:        UTF-8 Unicode text, with very long lines, with CRLF line terminators
messages/209:        UTF-8 Unicode text, with CRLF line terminators
messages/210:        ASCII text, with no line terminators
messages/211:        ASCII text, with no line terminators
messages/212:        UTF-8 Unicode text, with CRLF line terminators
messages/213:        ASCII text, with no line terminators
messages/214:        ASCII text, with no line terminators
messages/215:        ASCII text, with CRLF line terminators
messages/216:        ASCII text, with CRLF line terminators
messages/217:        ASCII text, with no line terminators
messages/218:        ASCII text, with CRLF line terminators
messages/219:        ASCII text, with no line terminators
messages/220:        ASCII text, with CRLF line terminators
messages/221:        UTF-8 Unicode text, with CRLF line terminators
messages/222:        UTF-8 Unicode text, with CRLF line terminators
messages/223:        ASCII text, with no line terminators
messages/224:        UTF-8 Unicode text, with CRLF line terminators
messages/225:        very short file (no magic)
messages/226:        ASCII text, with no line terminators
messages/227:        very short file (no magic)
messages/228:        ASCII text, with no line terminators
messages/229:        ASCII text
messages/230:        UTF-8 Unicode text, with CRLF line terminators
messages/231:        ASCII text, with no line terminators
messages/232:        ASCII text, with CRLF line terminators
messages/233:        ASCII text, with no line terminators
messages/234:        ASCII text, with no line terminators
messages/235:        ASCII text, with very long lines, with no line terminators
messages/236:        ASCII text, with no line terminators
messages/237:        ASCII text, with no line terminators
messages/238:        ASCII text, with CRLF line terminators
messages/239:        ASCII text, with CRLF line terminators
messages/240:        UTF-8 Unicode text, with no line terminators
messages/241:        ASCII text, with no line terminators
messages/242:        ASCII text, with no line terminators
messages/243:        ASCII text, with no line terminators
messages/244:        ASCII text, with no line terminators
messages/245:        UTF-8 Unicode text, with CRLF line terminators
messages/246:        data
messages/247:        ASCII text, with no line terminators
messages/248:        UTF-8 Unicode text
messages/249:        ASCII text
messages/250:        ASCII text
messages/251:        UTF-8 Unicode text, with very long lines, with CRLF line terminators
messages/252:        JPEG image data, JFIF standard 1.01, aspect ratio, density 144x144, segment length 16, baseline, precision 8, 600x277, frames 3
messages/253:        ASCII text
messages/254:        ASCII text
messages/255:        ASCII text
messages/256:        ASCII text
messages/257:        ASCII text
messages/258:        ASCII text
messages/259:        ASCII text
messages/260:        ASCII text
messages/261:        ASCII text
messages/262:        ASCII text
messages/263:        ASCII text
messages/264:        ASCII text
messages/265:        ASCII text
messages/266:        ASCII text
messages/267:        ASCII text
messages/268:        ASCII text
messages/269:        ASCII text
messages/270:        ASCII text
messages/271:        ASCII text
messages/272:        ASCII text
messages/273:        ASCII text
messages/274:        ASCII text
messages/275:        ASCII text
messages/276:        ASCII text
messages/277:        ASCII text
messages/278:        ASCII text
messages/279:        ASCII text
messages/280:        ASCII text
messages/281:        ASCII text
messages/282:        ASCII text
messages/283:        ASCII text
messages/284:        ASCII text
messages/285:        ASCII text
messages/286:        ASCII text
messages/287:        ASCII text
messages/288:        ASCII text
messages/289:        ASCII text
messages/290:        ASCII text
messages/291:        ASCII text, with no line terminators
messages/292:        data
messages/293:        ASCII text
messages/294:        ASCII text, with CRLF line terminators