Baofeng DA-77: Dual-band DMR radio

Baofeng DA-77Jason KC5HWB, Joop PA2JM, Carel PA3EHA and I had some pre-production pictures of this radio for quite a while, but some preliminary specs are now public.

The good
The most interesting fact is that the Baofeng DA-77 is a dual-band radio, something which didn’t exist so far. The second most interesting fact is the expected price point: $129,00.

The bad
Things bothering me a bit: only 160 memory positions and a meager 50 zones. Enough for professional use, but compared to the Connect Systems CS-700 (250 zones of 16 channels each) it’s far from impressive.

The ugly
The shell is identical to that of the UV-82, something I don’t like either. I do understand the decision though; re-using existing shells is much more cost effective than designing a new one. Another advantage is that accessories such as batteries are interchangeable.

Both Jason KC5HWB (Grapevine Ham Radio) and me are on Baofeng’s list for getting a review sample. To be honest I hope Jason gets one first, as he’s much more knowledgeable in this area than I am. Keep an eye on his blog.

Specifications

Dual-band, dual standby, mixed mode (DMR/FM) possible
– VOX
– CTCSS / DCS
– PC Programming
– FM
– Flashlight
– Single, group and general call
– Kill, Stun and revive
– Monitor, remote control
– Scanning
– Power saving
– Noise suppression function
– Manual dialing and storage dialing
– SMS
– AMBE+2TM vocoder

Frequency Range: VHF:136-174MHz AND 400-470MHz
– Memory channels: 160
– Zones: 50
– Operating Voltage: 7.4V
– Battery Capacity: 1800mAh
– Battery Average Working Time(5/5/90): 16 hours
– Frequency Stability: ±1.5ppm
– Antenna Impedance: 50Ω

– Power Output: 5/1 Watt (VHF), 4/1 Watt (UHF)
– Spurious Emission: – 36dBm1GHz/ – 30dBm≥1GHz
– Vocoder: AMBE+2TM

– Receiver Sensitivity: Digital 5%BER ≤0.3µV Analog ≤0.35µV
– Audio Distortion: <3%
– Conducted Radiation: –57dBm

STANDARD PACKAGE:

1. Baofeng DA-77 DMR Two-Way Transceiver
2. Dual-band Antenna
3. 110-240V Desktop Charger
4. Belt clip
5. User Manual
6. 1800mAh batterypack

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Zastone ZT-2R: dual-band TRX and wide-band RX

SAMSUNGIt looks like a bit like Baofeng UV-3R but the specs are much more interesting, and more in line with the Yaesu VX-3 *edit* the discontinued Yaesu VX-2: the Zastone ZT-2R is also a wide band receiver. With a price of around $80 it seems a nice deal – assuming it works. I really wonder about scan speed; most Chinese radios suck at that.

TX frequency range is limited in order to comply with European rules, but I’m pretty sure these radios can be ‘opened up’ for other regions in the world.

When looking at the battery it appears to be the same one as used in the Baofeng UV-3R, but I can’t be 100% sure. If true you can buy cheap batteries in abundance.

RX Frequencies:
MW: 0.540-1.8 MHz
SW: 1.800-30 MHz
Ham Band 1: 30.000-79(59) MHz
FM Band: 76 / 59 MHz-108 MHz
Air Band: 108.000 – 137.000 MHz
Ham Band 2: 137.00 – 174.000 MHz
VHF-TV Band: 174 – 222.000 MHz
Action Band 1: 222 – 420.000 MHz
Ham Band 3: 420 – 470.000 MHz
UHF-TV Band: 470 – 800 (729).000 MHz / (757-774 MHz)
Action Band 2: 800 – 999.000 MHz (USA Cellular Blocked)

Receiver:
Modes: AM / NFM / WFM
Intermediate Frequencies: 47.25, 450, 45.8, 10.7, 1 MHz
Sensitivity: 0.18 uV – 3 uV
Selectivity: 12kHz / 35kHz / 200kHz / 300kHz
AF Output: 50 mW – 100 Mw

Transmitter:
Frequency range 144-146 MHz, 430-440 MHz
Channel Capacity: >1300
Channel Spacing: 5 / 9 / 10 / 12.5 / 15 / 20 / 25 / 50 / 100KHz
Frequency Stability: 5ppm
Battery: 1200mAH
Operating Temperature: -20 ~ + 60 degrees C
RF Power: 1 / 1.5 / 2 / 3 Watt
Frequency Modulation: Variable Reactance F2, F3
Maximum Deviation: 5 kHz(F2, F3)
Spurious Emission: H 60dB ; L 50dB
Microphone Impedance: 2k Ohm
Operating Voltage 3.7V DC ± 15%

ZastonePrice: varies slightly, around $80. Seller: Zastone (AliExpress).