Product Info

Type Acceptance Information for TS4000 Radio Modem with 3422 Transceiver
Proposed FCC ID JWFTS4000C
Teledesign Systems, Inc Confidential Information Page 2
Radio Transceiver Model Number: DL3422
Radio Transceiver Part Number: 242-3422 (± 2.5 PPM frequency stability)
Radio Transceiver FCC ID: ATH2423422-007
Frequency Range: 132 - 174 MHz
Maximum RF Power Rating: 5 watts
RF Power Range: 0.1 - 5.0 watts, software selectable
Method of Modulation: Direct FM
Types of Modulation: 4 Level FSK
GMSK with BT = 0.3
GMSK with BT = 0.5
Type of Emissions: 20K0F1D (multi-bandwidth mode)
16K0F1D (multi-bandwidth mode)
11K2F1D (single bandwidth mode)
6K00F1D (for subparts 90.63(d)(7), 90.65(c)(18),
90.67(c)(14), 90.73(d)(13), 90.75(c)(19)
and 90.79(d)(6) only).
Emission Designator Calculations:
Modulation Types:
The TS4000 is designed to use three modulation types: 4 level FSK, GMSK with a BT=0.5 and
GMSK with a BT=0.3. The 4 level FSK modulation is provided to allow a high spectral efficiency
for a given channel bandwidth. The GMSK modulations are provided in order to be compatible
with other products and data communications standards.
Channel Bandwidths:
Our goal is to certify the TS4000 at four different channel bandwidths: 20K0, 16K0, 11K2 and
6K00 (the use of the 6K00 bandwidth is limited to the subparts shown above). This is to allow the
TS4000 to be setup for the most efficient operation for a given channel bandwidth that a user is
licensed for.
4 Level FSK 20K0F1D:
Channel Baud Rate (B) = 32000 bps
Modulation Frequency (M) = B (1/8) = 4000 Hz
Peak Deviation (D) = 6000 Hz
Bandwidth Calculation = 2 (D) + 2 (M)
Bandwidth Calculation = 2 (6000) + 2 (4000)
Bandwidth Calculation = 12000 + 8000
Bandwidth Calculation = 20000 or 20K0
16K0F1D:
Channel Baud Rate (B) = 24000 bps
Modulation Frequency (M) = B (1/8) = 3000 Hz