Kenwood TH-K20A - Manual (Page 2)

Direct Function Keys
Everyday functions are pre-programmed to 11 of the 12 keys. The additional PF key
can be assigned a custom function, making it possible to tailor the TH-K20A for
optimum convenience. There is no need to use a menu: one key push provides direct
access. And to prevent accidental operation, three types of key lock are provided.
Internal VOX
The TH-K20A offers convenient hands-free operation when using an optional
headset. The internal VOX (voice-operated transmission) circuitry provides
automatic PTT and a 10-level (Off/1-9) sensitivity adjustment to suit different
ambient noise levels. VOX delay time is also adjustable.
PC Programmable with MCP-5A
By simply connecting the TH-K20A to a computer running Kenwood’s free
MCP-5A software with the optional PG-4Y cable, one can easily manage dozens
of memory channels and memory names. This is also a convenient way to modify
or copy settings.
Backlit LCD and Keypad
Backlighting for the large 13-segment LCD display is a welcome feature when
picking memory names or changing settings. Similarly, keypad backlighting
facilitates operation in low-light situations.
CTCSS & DCS Encoder/Decoder + Cross Tone Capability
Thanks to the built-in CTCSS (Continuous Tone Coded Squelch System) and
DCS (Digital Code Squelch) encoder/decoder, the TH-K20A can handle 42
CTCSS sub-tone frequencies plus 104 DCS codes. And one can set separate TX
and RX signaling types so as to access a repeater that uses different encode/
decode signaling.
Tone Alert (Bell)
When activated, this function will sound an audible alert and flash a bell symbol
to indicate an incoming call. Both elapsed time and the number of missed calls
are clearly displayed.
CA315K-E-2
Other Features
▲
Power On Message
▲
Time-out Timer
▲
Priority Scan
▲
Band Scan, Program Scan,
MR Scan, CALL Scan, CTCSS Scan / DCS Scan
▲
Wide/Narrow Channel Spacing
▲
Busy Channel Lockout
▲
Key Lock Type Select
▲
Battery Save
▲
SMA Antenna Connector
▲
Automatic Repeater Offset
▲
1,750 Hz Tone Burst
▲
Direct Keypad Frequency Entry
▲
DTMF Autodial Memories (16ch, up to 16 digits)
▲
Battery Capacity Indicator (on transmit)
▲
Electronic Serial Number
Specifications
TH-K20A
GENERAL
Frequency Range TX
RX
144 - 148 MHz
136 - 174 MHz
Mode F3E, F2D
Antenna Impedance 50 Ω
Operation Temperature Range -4 °F ~ +140 °F (-20 °C ~ +60 °C)
Operating Voltage DC 6.0 ~ 9.0 V (Standard Voltage DC 7.4 V)
Frequency Stability ±2.5 ppm
Microphone Impedance 2 k Ω
Battery Life* (Figures approximate)
with KNB-63L
with BT-16
High / Mid / Low
6 / 8.5 / 10.5 Hours
6 / 8 / 10 Hours
Dimensions (W x H x D), Projections not included
Radio Only
with KNB-63L
2.13 x 4.40 x 0.57 in
( 54 x 111.7 x 14.4 mm )
2.13 x 4.40 x 1.00 in
( 54 x 111.7 x 25.3 mm )
Weight Radio Only
with KNB-63L
approx. 4.86 oz (138 g )
approx. 7.40 oz ( 210 g )
TRANSMITTER
RF Power Output High
with BT-16
Mid
Low
5.5 W
approx.3.5 W
2 W
1 W
Modulation Reactance modulation
Maximum Frequency Deviation Within ±5 kHz
Moduration Distortion Less than 5 % (300 Hz ~ 3 kHz)
RECEIVER
Circuitry Double super heterodyne
Intermediate Frequency 1st IF: 38.85 MHz / 2nd IF: 450 kHz
Sensitivity (12dB SINAD) Less than 0.16 µV
Squelch Sensitivity Less than 0.13 µV
Selectivity -6 dB
-50 dB
More than 10 kHz
Less than 28 kHz
Audio Output More than 400 mW (8 Ω / 10 % distortion)
* Assuming a duty cycle of 6-second transmit, 6-second receive, 48-second standby
Specifications are guaranteed for amateur radio bands only.
Measurements made per TIA/EIA 603 and specifications shown are typical.
Specifications are subject to change without notice, due to advancements in technology.
● MIL-STD810 C/D/E/F/G: Low Pressure, High Temperature, Low Temperature,
Temperature Shock, Solar Radiation, Rain, Humidity, Salt Fog, Dust, Vibration, and Shock
● International Protection Standard: IP54
*To meet these standards, the 2-pin connector cover has to be connected; the AAA battery case does not meet
the IP54 rating.
Optional Accessories
● KNB-63L
Li-ion Battery (1,130 mAh)
● SMC-32
Speaker Microphone
● KHS-26
Clip Microphone with
Earphone
● MCP-5A
Memory Control Software (ver.1.00 or later)
(available free for downloading from:
http //www.kenwood.com/i/products/info/amateur/software_download.html)
● SMC-33
Remote Control
Speaker Microphone
● KHS-22
Headset
● PG-4Y
PC Interface Cable
● SMC-34
Speaker Mic. w/
3-Function Key &
Vol Control
Not all accessories are available in all markets. For availability, contact your nearest dealer.
Battery case transmission output will decrease as time progresses. We recommend using low
power when using the battery case.
● KSC-35S
Rapid Charger
(100 V - 240 V)
● BT-16
Battery Case (6AAA)
Applicable MIL-STD & IP Standards*