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Kenwood TH-D74A - 144/220/430MHz FM Tribander Bander

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Built-in high-performance GPS receiver

144/220/430 MHz TRIBANDER. Triband Amateur radio packed with convenient features and the advantage of a digital transceiver with D-STAR, and APRS support. Featuring a color transflective TFT display that offers excellent visibility during the day or at night. Built-in GPS and Bluetooth support, as well as Micro USB and microSD/ SDHC. This radio is ready to harness the exciting developments in radio communications.

Features

- Compatible with the APRS communication protocol, for real-time two-way data transmission using packet communications. This stand-alone device enables the enjoyment of communications through a variety of features, including sharing of local and GPS positional information, and message exchange.
- Other station positional information, weather station information
- Station list, object compatibility
- Messaging functionality
- QSY Functionality
- KISS mode TNC
- APRS menu settings
- Compatible with D-STAR, the amateur radio communications network that has voice mode and data mode. Both local and international communications are possible through diverse operations including simplex communications, single repeater relay communications, and inter-repeater gateway communications.
- DV fast data mode
- Simple operation in DR (D-STAR repeater) mode
- Setting via the digital function menu
- Easily updated repeater list
- Kenwood proprietary sound
- Compatible with wideband and multimode reception
- Built-in IF receive filter
- IF output mode
- High-performance DSP voice processing
- Visibility display and user-friendly operation
- Tough weatherproofing meeting IEC 529 IP-54/ 55 standards
- Easily understandable pop-up screens
- Dual frequency reception (VxV, UxU, and VxU functions)
- Micro USB (Serial, Mass Storage Class, USB Audio) to enable use of external decoding software Bluetooth (SPP, HSP) support
- External Decode function (PC Decode 12kHz IF output, BW: 15 kHz)
- Voice Recording (Files size up to microSD memory capacity)
- CSV Data Import / Export, (Digital Repeater List, Callsign, List_Digital)
- GPS Logger mode (Un-limited Number of Data stored to microSD memory)

Current Consumption (TYP.)	SINGLE	260 mA (Rated Power) 135 mA (SQ Close) 48 mA (Avg. Save on)
Frequency Range	Band-A	TX: 144 - 148, 222 - 225, 430 - 450 MHz
	Band-A	RX: 136 - 174, 216 - 260, 410 - 470 MHz
	Band-B	RX: 0.1 - 76, 76 - 108 MHz (WFM)
Mode	TX	F3E, F2D, F1D, F7W
Mode	RX	F3E, F2D, F1D, F7W, J3E, A3E, A1A
Operating Temp. Range with Incd. KNB-75L		-4°F ~ +140°F (-20 °C ~ +60 °C ) +14°F ~ +122°F (-10 °C ~ +50 °C )
Frequency Stability		+/- 2.0 ppm
Antenna Impedance		50 O
Operating Voltage	DC-IN	DC 11.0 - 15.9 V (STD: DC 13.8 V)
Operating Voltage	BATT	DC 6.0 - 9.6 V (STD: DC 7.4 V)
Current Consumption TX		EXT.PS 13.8 V / Battery:7.4 V
(TYP.)		H M L EL
DC-IN		1.4 A 0.9 A 0.6 A 0.4 A
BATT		2.0 A 1.3 A 0.8 A 0.5 A
Current Consumption (TYP.)	RX	260 mA (Rated Power) 135 mA (SQ Close) 48 mA (Avg. Save on)
DUAL		310 mA (Rated Power) 185 mA (SQ Close) 50 mA (Avg. Save on)
GPS receiver mode		115 mA
Battery Life Approx.		Single, Save on, Rate 6:6:48 sec, GPS off H M L EL
KNB-75L (1,800 mAh)		6 hours 8 hours 12 hours 15 hours
KNB-74L (1,100 mAh)		4 hours 5 hours 7 hours 9 hours
KBP-9 (Alkaline 6AAA)		--- --- 3.5 hours --- Approx. 10 % shorter when GPS is ON
Dimensions (W x H x D)		Projections not included
with KNB-75L		2.20 x 4.72 x 1.33 in 56.0 x 119.8 x 33.9 m
with KNB-74L		2.20 x 4.72 x 1.15 in 56.0 x 119.8 x 29.3 mm
with KBP-9		2.20 x 4.72 x 1.42 in 56.0 x 119.8 x 36.0 mm
Weight (net) Body only		7.13 oz 202 g
with KNB-75L		12.2 oz 345 g (w/ Antenna, Belt Clip)
with KNB-74L		11.1 oz 315 g (w/ Antenna, Belt Clip)
with KBP-9		7.13 oz 360 g (w/ Antenna, Belt Clip, 6AAA Battery)
RECEIVER			Band-A	Band-B
Circuitry F3E, F2D, F1D, F7W		Double Super Heterodyne
J3E, A3E, A1A		Triple Super Heterodyne
IF Frequency	1st IF	J3E, A3E, A1A	57.15 MHz	58.05 MHz
	2nd IF		450 kHz	450 kHz
	3rd IF		-	10.8 kHz
Sensitivity (TYP.) Amateur Band	FM	12 dB SINAD FM/ NFM 144 MHz	0.18/ 0.22 uV	0.19/ 0.24 uV
	FM	FM/ NFM 220/430 MHz	0.18/ 0.22 uV	0.20/ 0.25 uV
	DV	PN9/GMSK 4.8kbps, BER 1% 144/ 430 MHz	0.20 uV	0.22 uV
	DV	220 MHz	0.22 uV	0.24 uV
SSB		10 dB S/N	-	0.16 uV
AM		10 dB S/N	-	0.50 uV
Except above Amateur Band AM		10 dB S/N 0.3 - 0.52 MHz	-	4 uV
		0.52 - 1.8 MHz	-	1.59 uV
		1.8 - 54 MHz	-	0.63 uV
		54 - 76 MHz	-	1.12 uV
		118 - 174 MHz	-	0.50 uV
		200 - 250 MHz	-	0.63 uV
		382 - 412 MHz	-	1.12 uV
		415 - 524 MHz	-	1.12 uV
FM		12 dB SINAD 28 - 54 MHz	-	0.32 uV
		54 - 76 MHz	-	0.56 uV
		118 - 144 MHz	0.36 uV	0.36 uV
		148 - 175 MHz	-	0.36 uV
		200 - 222 MHz	-	0.36 uV
		225 - 250 MHz	-	0.36 uV
		382 - 400 MHz	-	0.50 uV
		400 - 412 MHz	0.36 uV	0.36 uV
		415 - 430 MHz	0.36 uV	0.36 uV
		450 - 490 MHz	0.36 uV	0.36 uV
		490 - 524 MHz	-	0.63 uV
SSB		10 dB S/N1.8 - 54 MHz	-	0.40 uV
		54 - 76 MHz	-	0.79 uV
		144 - 148 MHz	-	0.16 uV
		222 - 225 MHz	-	0.20 uV
		430 - 450 MHz	-	0.16 uV
RECEIVER			Band-A	Band-B
FM BC Band WFM		30 dB S/N 76 - 95 MHz	-	1.59 uV
FM BC Band WFM		95 - 108 MHz	-	2.00 uV
Squelch(TYP.)		-	0.18 uV	0.25 uV
Spurious Rejection		144 MHz	50 dB or more	45 dB or more
Spurious Rejection		430 MHz	50 dB or more	40 dB or more
IF Rejection		-	60 dB or more	55 dB or more
Channel Selectivity		-6 dB 12 kHz or more -50 dB 30 kHz or less
Audio Output		7.4 V, 10% Dist.	400 mW or more / 8 O
TRANSMITTER
RF Power Output		EXT.PS 13.8 V / Battery:7.4 V H M L EL 5 W 2 W 0.5 W 0.05 W
Modulation	FM	Reactance Modulation
Modulation	DV	GMSK Reactance Modulation
Modulation Deviation	FM	+/ -5.0 kHz
Modulation Deviation	NFM	+/ -2.5 kHz
Spurious Emissions	HI/ MID	-60 dBc or less
	L	-50 dBc or less
	EL	-40 dBc or less
Microphone Impedance		2kO
GPS
TTFF (Cold start)		Approx. 40 sec
TTFF (Hot start)		Approx. 5 sec.
Horizontal Accuracy		10 m or less
Receive sensitivity Ta = 25°C, Open sky		Approx. -141 dBm (Acquisition)
Bluetooth
Version, Class		Version 3.0, Class 2
Output Power		-6 < Pav < 4 dBm
Modulation Characteristics		140 ? ?f 1avg ? 175 kHz
Initial Carrier Frequency		-75 ? fo? +75 kHz
Carrier Frequency Drift		±25 kHz (One Slot packet) ±40 kHz (Three Slot Packet) ±40 kHz (Five Slot Packet)

Kenwood TH-D74A - 144/220/430MHz FM Tribander Bander

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Built-in high-performance GPS receiver