TKB-6900

90-Series Base Stations

"TKB-6900 Series Low Band Base Stations are built around the TK-690 high performance 110W radio. The TK-690 transceiver is mounted in a 2 RU enclosure which includes forced air cooling and option bays for two peripheral circuit boards. The basic configuration includes a 2 channel tone termination panel (2 or 4 wire audio). Equipment may be mounted in a cabinet enclosure or open rack, and may be used either by itself (50W continuous duty or 110W at 20% duty cycle) or as a driver for an external continuous duty RF amplifier (100W or 300W).

Power supply options include battery backup with integrated SmartCharger and Low Voltage Disconnect.
Mounting options include 20 RU (42"") and 40 RU (77"") locking cabinets in addition to 17 RU (3') and 45 RU (7') open equipment racks.
External connections are RJ-11 for phone line, DB-25 for access to the internal chassis bus, & type N-female for RF.
T-R simplex antenna switching is included in the basic unit as well as in all external amplifiers.

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Frequency Range: Type K1 Type K2 Typ	29.7 - 37.0 MHz 35.0 - 43.0 MHz 40.0 - 50.0 MHz
Number of Channels	Local 160, Tone Remote* 7, DC Remote* 2
Channel Spacing	20 kHz
Operating Voltage	115 / 230 VAC, 47-63 Hz
Backup DC Voltage*	13.4 VDC
DC current requirement	standby < 2.5 A, transmit* 25 A at 100W
Operating Temperature	-22° to +140°F / -30° to +60°C
Frequency Stability	0.00%
Antenna Impedance	50Ω
FCC ID: K1 K2 K3	ALH22923110 ALH22923120 ALH22923130
FCC Compliance: K1 K2 K3	FCC parts 22, 90 FCC parts 22, 90 FCC parts 15, 22, 90
IC Certification: K1 K2 K3	282195519A 282195532A 282195520A

Sensitivity:	12 dB SINAD 0.25 _V, 20 dB Quieting 0.35 _V
Selectivity	85 dB
Intermodulation Distortion	80 dB
Spurious Response	90 dB
Audio Output	local speaker 4 W at < 5% distortion external speaker 13 W at < 5% distortion
Band Spread: K1 K2 K3	K1 7.3 MHz - K2 8.0 MHz - K3 10.0 MHz

RF power output - no external amplifier	45 W to 110 W
Duty Cycle - no external amplifier	20 % at 110W
RF power output with external amplifier*	100 W to 300 W
Duty Cycle with external amplifier*	100%
Emission Designator	16K0F3E
Spurious Response	80 dB
FM Hum and Noise	55 dB
Local Microphone Impedance	600Ω
Audio Distortion	< 2% at 1000 Hz
Band Spread: K1 K2 K3	7.3 MHz 8.0 MHz 10.0 MHz

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TKB-6900

90-Series Base Stations

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