Kenwood D-Star/APRS TH-D74 Video Review


HamRadioConcepts uploaded a video on their channel on the Kenwood TH-D74 handheld radio.

Kenwood TH-D74

The Kenwood TH-D74 is the latest handheld radio from Kenwood with D-Star, built-in APRS, Bluetooth, GPS and many more features.

Here are the specifications of the radio (from Kenwood UK’s website):

Key Features

Compatible with the APRS communication protocol, which allows real-time two-way data transmission by using packet communications. This stand-alone device provides enjoyment of communications that make use of a variety of features, including sharing of local and GPS positional information and message exchange.
Compatible with D-STAR, the amateur radio communications network that has both voice and data modes. Both local and international communications are possible through diverse operations including simplex communications, single repeater relay communications and inter-repeater gateway communications.
Wideband and multimode reception
Built-in IF filter for comfortable reception
IF output mode
High-performance DSP voice processing
Tough weatherproofing meeting IP54/55 standards
Easily understandable pop-up screens
Built-in GPS

Supplied With

Antenna Yes, , Ferrite Bar Antenna suitable for receiving mid- and low-HF bands
Battery Yes, , KNB-75L – Li-ion battery (1800 mAh)
Belt Clip Yes
Charger Yes, Supplied with both UK (3-pin) and EU (2-pin) mains cables
Instruction Manual Yes, , Printed “Basic operations” manual in English, German, French, Italian, Spanish & Dutch
Screw Set Yes, , for belt clip
USB Cable Yes, , USB-A to Micro-USB-A cable

Amateur Radio General Features

1750 Hz Tone Burst Function. Yes
8.33KHz spacing on Air Band Yes
Alphanumeric LCD Display Yes
Antenna Socket SMA
APRS Function (via built-in TNC) Yes
Auto Power Off Yes
Automatic Repeater Offset (VHF) Yes
Built-in Packet TNC 1200/9600 bps Yes, , KISS TNC
Built-in GPS Yes
Built-in microSD/SDHC Yes
Built-in micro-USB Yes, , USB Serial, USB Audio Output, Mass Storage
Built-in Bluetooth Yes, , HSP, SPP
Clock Yes, , Time/Date Function
CTCSS Encoder/Decoder Yes, , Choice of 50 tones
CW Band Width Yes
CW Pitch Frequency Yes
CW Reverse Yes
DCS Encoder/Decoder Yes, , Choice of 104 digital tones
Detect Signal Output Yes
Direct Frequency Entry Yes
DTMF Memory Yes, , 10 channels, 16 digits
Dual Receive Yes, , VHFxUHF, VHFxVHF or UHFxUHF
ECHOLINK Memory Dialer Channels Yes
Firmware Upgradeable via USB Port Yes
FM Radio Yes
Front Panel KeyPad Yes
High-Quality Front Speaker Yes
IF 12 kHZ Output Yes, , to USB Audio, 2-pin Jack
Key Beep On/Off Yes
Key Lock Yes
LCD Background Color Yes, , B/W
Memory Channel Lock-out Yes
Memory Channels with Alpha-tagging 1000 Memory Channels
Memory Shift Function Yes
Menu System for individual set-up Yes
Meter Type Yes, , 3 types
Monitor Function Yes
Multiple Scan Functions Yes
Multi-scroll Key Yes
Packet Operation – AX25 and KISS Mode Yes, , KISS mode only
PC Programmable Memories Yes
PC Radio Control Program (Option) Yes
Power-On Message Yes
Programmable Function Keys Yes, , 2 keys (PF1, PF2)
QSO Log Yes
RX Audio Equalizer Yes, , 5 bands
Selectable Repeater Offsets Yes
Separate Squelch for A and B Bands Yes
SSB/CW/AM Reception Yes
SSB Hi-cut Filter Yes
AM Hi-cut Filter Yes
Simultaneous 2 frequency RX Yes
Time-Out Timer Yes
TX Audio Equalizer Yes, , 4 bands
TX/RX Audio Recording Yes, , microSD/SDHC
USB Port Yes, , built-in Micro-USB Port
Voice Message Memory Yes
Voice Guidance Yes
Wide/Narrow Deviation Selection Yes
Wide Band Reception Yes

Amateur Portable Specification

RF Output Power – 13.8 V Yes
RF Output Power (approx.) – High 5 W
RF Output Power (approx.) – Mid 2 W
RF Output Power (approx.) – Low 0.5 W
RF Output Power (approx.) – E. Low 0.05 W
Frequency Range – RX – VHF 136 – 174 MHz
Frequency Range – RX – UHF 410 – 470 MHz
Frequency Range – Band-B RX: 0.1 – 76, 76 – 108 MHz (WFM)
108 – 524 MHz
Frequency Range – TX – VHF 144 – 146 MHz
Frequency Range – TX – UHF 430 – 440 MHz
Mode TX: F3E, F2D, F1D, F7W
RX: F3E, F2D, F1D, F7W, J3E, A3E, A1A
Frequency Stability +/- 2.0 ppm
13.8 V DC-In Facility Yes, (use PG-2W or PG-3J)
Antenna Impedance – 50 Ohm Yes
Microphone Impedance 2 kOhm
Operating Temperature Range -10 °C to +50 °C with standard battery
Operating Voltage DC-IN: DC 11.0 – 15.9 V (STD: DC 13.8 V)
BATT: DC 6.0 – 9.6 V (STD: DC 7.4 V)
Receiver Circuitry F3E, F2D, F1D, F7W: Double Super Heterodyne
J3E, A3E, A1A: Triple Super Heterodyne
Receiver Intermediate Frequency – Band-A – 1st IF 57.15 MHz
Receiver Intermediate Frequency – Band-A – 2nd IF 450 kHz
Receiver Intermediate Frequency – Band-B – 1st IF 58.05 MHz
Receiver Intermediate Frequency – Band-B – 2nd IF 450 kHz
Receiver Intermediate Frequency – Band-B – 3rd IF J3E, A3E, A1A: 10.8 kHz
Receiver Sensitivity – Main & Sub Bands Amateur Band
FM / NFM 144 MHz Band-A: 0.18 / 0.22 uV
FM / NFM 144 MHz Band-B: 0.19 / 0.24 uV
FM / NFM 430 MHz Band-A: 0.18 / 0.22 uV
FM / NFM 430 MHz Band-A: 0.20 / 0.25 uV
DV PN9 / GMSK 4.8 kbps, BER 1% 144 MHz Band-A: 0.20 uV / 0.22 uV
DV PN9 / GMSK 4.8 kbps, BER 1% 430 MHz Band-B: 0.22 uV / 0.24 uV
SSB 10 dB S/N Band-A: 0.16 uV
AM 10 dB S/N Band-B: 0.50 uV
Receiver Squelch Band-A: 0.18 uV
Band-B: 0.25uV
Receiver Spurious Rejection 144 MHz – Band-A: 50 dB or more
430 MHZ – Band-A: 50 dB or more
144 MHz – Band-B: 45 dB or more
430 MHz – Band-B: 40 dB or more
Receiver IF Rejection Band-A: 60 dB or more
Band-B: 55 dB or more
Receiver Channel Selectivity -6 dB: 12 kHz or more
-50 dB: 30 kHz or less
Receiver Audio Output 7.4 V, 10% Dist.
400 mW or more / 8 Ohm
Transmitter Maximum Frequency Deviation FM: +/- 5.0 kHz
Transmitter Modulation FM: Reactance Modulation
DV: GMSK Reactance Modulation
Transmitter Modulation Deviation FM: +/- 5.0 kHz
NFM: +/- 2.5 kHz
Transmitter Spurious Emissions HI / MID: -60 dBc or less
L: -50 dBc or less
EL: -40 dBc or less
Dimensions W x H x D
with KNB-75L: 56.0 x 119.8 x 33.9 mm
with KNB-74L: 56.0 x 119.8 x 29.3 mm
with KBP-9: 56.0 x 119.8 x 36.0 mm
– Projections not included –
Weight (with battery) with KNB-75L: 345 g (w/ antenna, belt clip)
with KNB-74L: 315 g (w/ antenna, belt clip)
with KBP-9: 360 g (w/ antenna, belt clip, AAAx6 battery)

APRS Features

Alert on Special Call Yes
APRS Data Output Yes, , to a PC via the USB Port or Bluetooth
Auto Message Reply Yes
Decay Algorithm Yes
Message Memory Yes, , 100 Messages
New-N Paradigm Yes
Packet Data Output Yes, Yes, to a PC via the USB Port or Bluetooth
Proportional Pathing Yes
QSY Function Yes
Received Packet Data Pop-ups Yes
Relay Path Display Yes
SmartBeaconing ™ Yes
State/Section /Region Pathing Yes
Station List Memory Yes, , lists up to 100 Stations, with filtering and sorting options
TX Object, Item Packet Yes
User Phrases Yes
Visible Message Notifications Yes

D-STAR Features

DV Mode Yes
DV Fast Mode Yes, , USB Interface or Bluetooth
DR Mode Yes
Communication Mode Yes
Communication Mode – Direct Yes
Communication Mode – Single Repeater Yes
Communication Mode – Zone Yes
Communication Mode – Gateway Yes
Communication Mode – Refrector Yes
Repeater List, Import/Export Yes
Repeater Information Yes
Callsign List, Import/Export Yes
Near Repeater Stattion Select/Scan Yes
Access Repeater Select Yes
Gateway Route Select Yes
Select TO Station Yes
TX Message Yes
GPS TX Mode Yes
GPS Sentense TX Select Yes
GPS Auto TX for Target Station Yes
Detect FM on DV Mode Yes
RX Popup Message Yes
Direct Reply Yes
Standby Beep Yes
Code SQ Yes
Auto Reply Yes
Auto Reply Voice Select Yes
RX History Yes
TX History Yes
Late Entry Receive Yes
Packet Loss Display Yes
Digital Monitor (MONI Key) Yes
Car Chank Display Yes

Applicable Standards

IP54 Yes
IP55 Yes

Oddly enough, the radio is available for sale in the USA, however I cannot find any information on Kenwood USA’s page on amateur radios here.

Here is the video, enjoy:

You can buy the radio here (affiliate).

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