Specifications

1-2 Description of Equipment
Description of Equipment
The TW7000 includes the basic receiver/transmitter unit and accesso-
ries. The accessories are a dc power cable (C991829), an operator
manual (TW7000-MSOP), and two spare dc 25A fuses (550011).
The TW7000 is powered from any dc source that provides 13.8V at a
maximum of 25A. Good performance is achieved when the input volt-
age is in the range of 11 to 15.5V.
The 50 ohm, UHF, female, RF output connector is meant to be used
with broadband antennas, power amplifiers, and narrowband antenna
tuners.
The TW7000 can be programmed and operated from its front panel, or
from an external computer utilizing a wide variety of interface stan-
dards including RS232, 422, and 485.
TW7000 audio accessories include a heavy-duty hand microphone, a
dynamic desk microphone, a Morse key, and headphones.
Table 1-1
TW7000 Technical Specifications
Characteristic Specification
General
Frequency Range 1.6 to 30 MHz for TX; .1-30 MHz for RX
Channel Spacing 10 Hz, standard
Channels 256 standard, expandable to 1000
Frequency Entry Keypad controlled
Display Backlight alphanumeric LCD
Tuning Up and down push buttons, programmable
steps
Scanning Multiple scan groups; operator selectable scan
rates
Antenna
Impedance
50 ohm
Frequency
Stability
± 1 ppm -30° to 60°C; optional ± 0.1 ppm
OperatingModes USB,LSB,AME,PCS,(standard);simplexor
semi-duplex
Duty Cycle Continuous
Input Power +13.8 Vdc, nominal; 11 to 15.5 Vdc, opera-
tional