Instruction Manual

DE
DANIELS
ELECTRONICS
1-2 Enhanced AM/FM Synthesizer Instruction Manual OS(R/T)-3(A/H) 29 - 470 MHz
Frequency Band: 118 - 159.4 MHz, AM Multichannel OS-3H1xx Analog Board
• OST-3A128 - synthesized, installed in AM transmitter, 118 - 138 MHz RF output.
• OSR-3A149 - synthesized, installed in AM receiver, 139.4 - 159.4 MHz RF output.
Frequency Band: 118 - 174 MHz, Common OS-3H1xx Analog Board
• OST-3H141 - synthesized, installed in FM transmitter, 128 – 152.6 MHz RF output.
• OST-3H162 - synthesized, installed in FM transmitter, 150 - 174 MHz RF output.
• OSR-3H141 - synthesized, installed in FM receiver, 128 – 152.6 MHz RF output.
• OSR-3H162 - synthesized, installed in FM receiver, 150 - 174 MHz RF output.
Frequency Band: 406 - 470 MHz, Common OS-3H4xx Analog Board
• OST-3H440 - synthesized, installed in FM transmitter, 406 - 470 MHz RF output.
• OSR-3H440 - synthesized, installed in FM receiver, 427.4 - 451.4 MHz RF output.
The OS-3A/H Enhanced Synthesizer models are very similar; all models use the same digital board
and mechanical construction. The significant differences between the models relate to the analog
board. There are four different analog boards covering the four frequency bands of 29 - 50 MHz,
118 - 159.4 MHz, 128 - 174 MHz and 406 - 470 MHz respectively. Each model’s specific sub
band of operation in a given frequency band is determined by select components on the
corresponding analog board.