G-9105 FSK Transmitter

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FSK Transmitters, Receivers and Transceivers

G-9105 Dual FS Transmitter
G-7606C FSK Receiver
G-8000C Transceiver
G-8815 Programmable FS Transmitter

G-9105 Dual FS Transmitter

The G-9105 Dual FS Transmitter is a frequency-shift transmitter with field selectable features. Each tone transmitter generates tone signals between 420 Hz and 30 kHz with bandwidths ranging from 2% to 15%. A switch allows use of a divider circuit to reduce jitter on low frequency, high bandwidth channel frequencies.

Each Transmitter provides a mark, space and squelch input. The squelch inputs are configured such that +12 Vdc turns the tone off. The mark and space inputs can be field configured for either keyed to common, low, or keyed to +12Vdc, high and can have either 22K pull-up, 22K pull-down, or neither. Each transmitter has sampler that can alternately key mark and space when both are keyed simultaneously. This sampler frequency is set to approximately 20 Hz, but can be changed with a single capacitor.

Each tone transmitter can be configured for either 2-frequency (2F) or 3-frequency (3F) operation. The transmitter outputs exhibit a rising impedance out of band characteristic for frequency multiplexing of channels.

Specifications

FS Center Frequency and Bandwidth: Center frequencies from 420 Hz to 30 kHz, bandwidths from 2% to 15%.
FS Frequency Stability: +/-0.15% from -10 to +55° C. Operating range -10 to +70° C.
FS Tone Output Level: -30 to +3 dBm.
Filter: 600 ohm nominal with rising impedance out of band. Plug-in G-9080 available for both A and B channels.
Squelch Input: Normally at 0 V for on and +12 V for off.
Mark and Space Inputs: CMOS with 22K pull-up, pull-down, or neither, low or high assert field selection.
Power Requirement: 30 mA at 12 Vdc.

CMOS Inputs
2F, 3F and Sampler Operation
Squelch Inputs
Field Selectable Input Logic

DataSheet: G-9105.pdf 10-01-03 57KB

G-9105

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CMOS Inputs

2F, 3F and Sampler Operation

Squelch Inputs

Field Selectable Input Logic

G-9105