Kenwood TH-K20A

TH-K20A

TH-K20A

The Thin Edge

A powerful communications tool in every sense, KENWOOD’s new TH-K20A/K40A radio offers 5.5 watts of RF output to ensure reliable performance.

Numerous features ensure superb operating ease, yet it is small enough to fit comfortably in the palm. Both display and keypad are backlit for night-time use, and for added convenience everyday functions are pre-programmed to 11 keys with an additional PF key that can be assigned a custom function. Plus, the construction is rugged enough to stand up to the worst weather. Inside and out, the TH-K20A/K40A is fully equipped for clear communications — wherever and whenever needed.

TH-K20A TH-K40A
GENERAL
Frequency Range TX 136 – 174 MHz 400 – 470 MHz
RX 136 – 174 MHz 400 – 470 MHz
Mode F3E, F2D
Antenna Impedance 50 Ω
Operation Temperature Range -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 kΩ
Battery Life* (Figures approximate) High / Mid / Low
with KNB-63L 6 / 8.5 / 10.5 Hour
with KNB-65L 8 / 11.5 / 14 Hours
with BT-16 6 / 8 / 10 Hours
Dimensions (W x H x D),
Projections not included
Radio Only
with KNB-63L
54 x 111.7 x 14.4 mm
54 x 111.7 x 25.3 mm
Weight Radio Only approx. 138 g
with KNB-63L approx. 210 g
TRANSMITTER
RF Power Output High 5.5 W 5 W
with BT-16 approx.3.5 W
Mid 2 W
Low 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 Less than 0.18 μV
Squelch Sensitivity Less than 0.13 μV
Selectivity -6 dB More than 10 kHz
-50 dB Audio Output More tha
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. Specifications shown are typical.

Applicable MIL-STD & IP

Standard MIL 810C
Methods/
Procedures
MIL 810D
Methods/
Procedures
MIL 810E
Methods/
Procedures
MIL 810F
Methods/
Procedures
MIL 810G
Methods/
Procedures
Low Pressure 500.1/Procedure I 500.2/Procedure I, II 500.3/Procedure I, II 500.4/Procedure I, II 500.5/Procedure I, II
High Temperature 501.1/Procedure I, II 501.2/Procedure I, II 501.3/Procedure I, II 501.4/Procedure I, II 501.5/Procedure I, II
Low Temperature 502.1/Procedure I 502.2/Procedure I, II 502.3/Procedure I, II 502.4/Procedure I, II 502.5/Procedure I, II
Temperature Shock 503.1/Procedure I 503.2/Procedure I 503.3/Procedure I 503.4/Procedure I, II 503.5/Procedure I
Solar Radiation 505.1/Procedure I 505.2/Procedure I 505.3/Procedure I 505.4/Procedure I 505.5/Procedure I
Rain 506.1/Procedure II 506.2/Procedure II 506.3/Procedure II 506.4/Procedure III 506.5/Procedure III
Humidity 507.1/Procedure I, II 507.2/Procedure II, III 507.3/Procedure II, III 507.4 507.5/Procedure II
Salt Fog 509.1/Procedure I 509.2/Procedure I 509.3/Procedure I 509.4 509.5
Dust 510.1/Procedure I 510.2/Procedure I 510.3/Procedure I 510.4/Procedure I, III 510.5/Procedure I
Vibration 514.2/Procedure VIII, X 514.3/Procedure I 514.4/Procedure I 514.5/Procedure I 514.6/Procedure I
Shock 516.2/Procedure I, II, V 516.3/Procedure I, IV 516.4/Procedure I, IV 516.5/Procedure I, IV 516.6/Procedure I, IV
International Protection Standard
Dust & Water Protection IP54

KNB-63L

KNB-63L
KNB-63L

KSC-35S

KSC-35S
KSC-35S

KBH-18

KBH-18
KBH-18

EMC-3

EMC-3
EMC-3

Manual