Kenwood TS-120S Service Manual page 4

FEATURES/GENERAL INFORMATION
FEATURES
1. SINGLE CONVERSION SYSTEM USING PLL
CIRCUITRY
The single conversion system, with a unique PLL Phase Lock-
ed Loop circuit, FET balanced mixers and MOS FET'S
assures excellent spurious and intermodulation
characteristics.
2. BUILT-IN DIGITAL DISPLAY
The digital display affords easy reading of operating frequen-
cy to an accuracy of 100 Hz, on any band and any mode.
3. BUILT-IN SHIFT CIRCUIT (Passband Tuning)
An IF SHIFT system is built in to the transceiver to allow shif-
ting of the IF passband, thereby eliminating adjacent channel
interference.
4. 3.5~29.7 MHz AND WWV BANDS
The transceiver is designed to operate on LSB/USB/CW in
the 3.5~29.7 MHz abnds. WWV (14.5~15 MHz) is also
built in to the transceiver to permit accurate frequency
calibration.
5. COMPACT, LIGHT-WEIGHT DESIGN
The TS-120 has many advanced freatures, yet it is compact
and light-weight suitable for mobile and field operations as
well as fixed station operation.
6. EASY OPERATION
All controls and switches are carefully arranged for ease of
operation, ensuring convenience and versitility.
7. ALL SOLID-STATE DESIGN
The all solid-state, compact unit features a wide band final
stage, elominating the need for peaking controls.
8. FOUR FIXED CHANNELS
Four FIX channels can be installed, one for each of the 7, 14,
21 and 28 MHz bands. The 3.5 MHz and 28 MHz fixed xtal
position can be exchanged by simply moving a connector on
the AF-GEN unit.
9. FULL RANGE OF AUXILIARY FUNCTIONS
The TS-120 is equipped with VOX balanced gate noise
blanker and a 25 kHz marker.
10. OPTIONAL CW FILTER YK-88C
The TS-120 permits use of the optional YK-88C CW filter.
CW semi-break-in operation is provided using the built-in
VOX and CW side tone circuits.
11. WIDE VARIETY OF OPTIONAL ACCESSORIES
The following optional accessories are available:
Regulated Power Supply (PS-30), Mobile Mount (MB-100),
CW Filter (YK-88C), External VFO (VFO-120), External
Speaker (SP-120).
GENERAL INFORMATION
The TS-120 features a number of unique circuits and overall
high performance. It is designed so the PLL lock frequency
of each band, the CAL marker signal, and the counter clock
circuit use a single reference frequency crystal instead of in-
dividual crystals as found in the TS-820 series transceiver.
Circuits include IF SHIFT, VOX (with semi-break-in CW), side
tone, noise blanker (NB), and crystal calibrator (CAL) for con-
venient and versatile transceive operation.