KENWOOD TH-K20A 144MHz FM Transceiver
Boasting 5.5 watts of RF output, Kenwood’s new TH-K20A radio is powerful. Despite being small enough to fit comfortably in the palm, it offers full-size performance and numerous features to ensure superb operating ease. 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 with a custom function. Plus, its construction is rugged enough to stand up to the worst weather. Inside and out, the TH-K20A is fully equipped for clear communications – wherever and whenever needed.
Conveniently Compact, Reliably Robust
This radio is remarkably light (just 7.4 oz or 210 g) and thin (2.13 inches or 54 mm). Yet there is no compromise on construction: it meets or exceeds the stringent IP54 dust and water intrusion standards as well as the MILSTD 810 C, D, E, F & G environmental standards, making it rugged enough for demanding outdoor use in bad weather.
High Sound Pressure for Audio Clarity
Another feature that sets the TH-K20A apart is sound: it benefits from the audio expertise for which Kenwood is renowned. High sound pressure – which is not the same as volume – delivers a clarity that is unmistakable. Just listen once and you will appreciate what a difference it makes.
200 Channels with 6-Digit Memory Name
The TH-K20A has 200 memory channels – with a 6-digit Memory Name function to enable clear identification – plus 6 program scan memories, 1 call channel and 1 priority channel.
Li-ion Battery & Cradle Charger
This radio is supplied with a rechargeable Lithium-ion battery plus a convenient cradle charger.
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.
Other
- 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
General |
||
| Frequency Range (MHz) |
TX : 144 – 148 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 Hours |
|
| with BT-16 |
6 / 8 / 10 Hours |
|
| Dimensions (W x H x D), Projections not included | Radio Only |
54 x 111.7 x 14.4 mm |
| with KNB-63L |
54 x 111.7 x 25.3 mm |
|
| Weight | Radio Only |
Approx.. 138g |
| with KNB-63L |
Approx. 210g |
|
Transmitter |
||
| RF Power Output | High |
5.5W |
| with BT-16 |
Approx. 3.5W |
|
| Mid |
2W |
|
| Low |
1W |
|
| 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 |
More than 10 kHz |
| -50 dB |
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
Datasheet KENWOOD TH-K20A 144MHz FM Transceiver
