Product Info

Type Acceptance Information for TS4000 Radio Modem with 3412 Transceiver
Proposed FCC ID JWFTS4000B
Teledesign Systems, Inc Confidential Information Page 2
Radio Transceiver Model Number: DL3412
Radio Transceiver Part Number: 242-3412 (± 1.5 PPM frequency stability)
Radio Transceiver FCC ID: ATH2423412-004
Frequency Range: 403 - 512 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)
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 three different channel bandwidths: 20K0, 16K0 and 11K2.
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 = 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
Peak Deviation (D) = 5000 Hz
Bandwidth Calculation = 2 (D) + 2 (M)
Bandwidth Calculation = 2 (5000) + 2 (3000)
Bandwidth Calculation = 10000 + 6000
Bandwidth Calculation = 16000 or 16K0