Spectra Precision ADLCONF User Guide - Manual (Page 32)

32 ADLCONF User Guide
12.5 kHz Channel Bandwidth
Protocol Type Modulation Type Radio Link Rates (bps)
Transparent EOT/EOC and Packet Switched GMSK 4800
Transparent EOT/EOC and Packet Switched 4FSK 9600
Transparent FST 4FSK 9600
TRIMTALK 450s GMSK 4800, 8000
TRIMMARK II/IIe GMSK 4800
TT450S (HW) GMSK 4800
TRIMMARK 3 GMSK 9600 (USA)
SATEL 4FSK 9600
U-Link GMSK 4800
25 kHz Channel Bandwidth
Protocol Type Modulation Type Radio Link Rates (bps)
Transparent EOT/EOC and Packet Switched GMSK 4800*, 9600*
Transparent EOT/EOC and Packet Switched 4FSK 19200
Transparent FST 4FSK 19200
TRIMTALK 450s GMSK 4800*, 9600*, 16000*
TRIMMARK II/IIe GMSK 4800*
TT450S (HW) GMSK 4800*, 9600*
TRIMMARK 3 GMSK 19200 (USA)
SATEL 4FSK 19200
South GMSK 9600*
Stonex Type 1 GMSK 9600*
U-Link GMSK n/a
* According to the US FCC all transmissions within the US in 25 kHz channels must use a
radio link rate at least 19200 bps. See the next section on US narrowbanding regulations.
US Narrowbanding Regulations
Beginning in 2013, new FCC narrowbanding regulations restrict UHF transmissions
within the United States. Data transmission made in 25 kHz-wide channels are restricted
to radio link rates ≥ 19200 bps. Voice transmissions are not allowed in 25 kHz channels at
all. There are no restrictions for license holders for (a) data or voice transmission in 12.5
kHz channels or (b) data or voice reception of any channel bandwidth.