17 Octombrie 2017
   
Duminică, 29 Martie 2015 16:02

DM-R89 portable DMR 4FSK radio

   Un nou model al celor de la LISHENG este in curs de aparitie . DM-R89 portable DMR 4FSK radio pare destul d einteresanta in primul rand frecventelor de lucru : VHF:136-174MHz,UHF:400-470MHz,350-390MHz,450-520MHz, care o face destul de versatila in ceea ce priveste utilitatea pe piata.

    Pe pagina oficiala in chineza modelul este prezent dar pe varianta engleza nu. Specificatiile arata ca ar avea autorizatiile  FCC si EU, asa ca sunt sanse sa apara si pe piata EU.

   Daca vine si cu un pret bun este de luat in seama. Specificatiile producatorului:

1. analog mode
2. digital mode
3. analog + digital mode
DMR Tier 2 Mototrbo System, DM-R89 portable DMR 4FSK radio
 

 
Product Description

Digital Mobile Radio(DMR) is an open digital radio standard produced by European Telecommunication Standards Institute(ETSI). Being capable of voice, data and a range of others fatures and applications in conventional and trunking mode. It maximize the use of spetrum resources. In a great degree, its competitive price are preferred by the users who like digital technique. Its analog + digital modes supply users a buffer stage to transfer from analog to digital radio mode. Our digital Portable analogue motorola standard LS-H760 DMR radio already get highly reputation from all over the world, its stable performance, and compatabile with MOTOROLA will supply you more choices, should it interest your markets, contact us now. Below is more functions and features:

DMR Tier 2 Mototrbo System, DM-R88 portable DMR 4FSK radio functions and features:

1.Three operation modes: digital mode/analog mode/digital+analog mode. It is compatible with current analog system, ensuring a smooth analog-to-digital transition.
2. Announce the channel number and the current battery capacity
3. TOT.
4. VOX.
5. Battery Saver
6. Scan and Priority Channel Scan
7. Channel Lock
8. Programmable funstion
9. Encryption

Analog Mode
1. Bandwidth 25KHz/12.5KHz
2. Modulation Type: FM
3. Support standard/non standard CTCSS/DCS
4. Busy Channel Lock-out

Digital Mode

1. Bandwidth: 12.5KHz/6.25KHz
2. Modulation Type: 4FSK
3. Vocoder Type: AMBE++/SELP both compatible
4. 32 Bit Voice Encrption (Optional)
5.  Support group call and individual call, you can program multiple group call numbers at the same time.
6. Transmitting permission setup.
7. This radio is capable of color code setup.

Standard accessories:

Li-poly Battery (1800mAh) *1pc,
Desk-top Charger *1pc,
AC Adaptor *1pc,
Rubber Antenna *1pc,
Belt Clip *1pc,
Hand Strap* 1pc,
User Manual *1pc

DMR Tier 2 Mototrbo System, DM-R88 portable DMR 4FSK radio technical specifications:
General
Frequency Range   
VHF:136-174MHz
UHF:400-470MHz,350-390MHz,450-520MHz  
 Channel No.     1000
 Channel spacing     Analog: 25/12.5KHz, digital:12.5/6.25KHz
Working voltage     7.4v Rated
 Battery capacity     2000mAh(Li-ion)
 Frequency Stability     ±1.5ppm
 Antenna Impedance     50Ω
 Dimension     129*61*33mm
 Weight     285g with battery/antenna
 Digital vocoder type     AMBE+2C/Qinghua SELP
Transmitter 
 Power output   
VHF(high): 5W
VHF(Low): 1W
UHF(high): 4W
UHF(Low): 1W
 FM Modulation   
11kφF3E at  12.5khz
16kφF3E at  25khz
4FSK digital modulation   
12.5KHz Data only: 76φFXD
12.5KHz Data & Voice: 7K6φFXW
 Spurious Emission   
-36dBm<1GHz
-30dBm>1GHz
 Modulation Limiting   
±2.5KHz at 12.5KHz
±5.0KHz at 25KHz
 FM Hum&Noise   
40dB@ 12.5khz
45dB@ 25KHz
Adjacent channel power   
60dB @ 12.5khz
70dB @ 20/25KHz
 Audio response     +1 - -3dB
 Audio Distortion     ≤5%
  Receiver
 Sensitivity(Analog)     0.2μV(12dB SINAD)
 Sensitivity(Digital)     0.3μV/BER5%
 Selectivity     60dB@ 12.5KHz/ 70dB @ 25KHz
 Intermodulation     65dB @ 12.5/20/25KHz
 SNR   
40dB @ 12.5KHz
45dB @ 25KHz
 Conducted Spurious Emissiona     -57 dBm
 Rated Audio Power Output     1W
 Rated Audio Distortion     ≤5%
 Audio Response     +1~-3dB
 Enviromental Specifications
 Operating Temperature Range     ~30°c ~ +60°c
 Storage Temperature Range     ~40°c ~ +85°c
 ESD   
IEC6100-4-2 LEVEL4
±8KV Touch discharge
±15KV Air Discharge
 U.S.MIL     MIL-STD-810C/D/E/F
 Humidity     As per MIL-STD-810C/D/E Standard
 Shock&Vibration     As pwer MIL-STD-810C/D/E/F Standard

 

Sâmbătă, 17 Ianuarie 2015 21:05

Hytera PD785/PD785G DMR

  Preferata mea.De departe nici o statie portabila nu se apropie de cat de mult imi place. In primul rand designul.Amplasarea antenei pe centru si dispunerea butoanelor alaturi de lcd-ul incadrat frumos ca si tastatura o scoate din anonimat.

  Cel putin pentru mine. Vine in ambele variante VHF: 136 - 174 MHz siUHF: 400 - 470 MHz.Cu si fara GPS.De cand am vazut-o e un must have. NU gasesc nici un minus la ea. Carcasa bine gandita si rezistenta MIL810 - C/D/E/F/G si clasa de protectie IP67 o fac perfecta pentru mine. Alaturi de Yaesu VX-6-le meu va face echipa perfecta.La lucru si la bautele accidentale.Ale lor nu ale mele.

   Din punctul meu de vedere e portabila DMR a anului 2014. Unul din proiectele mele implica o asemenea statie si reteaua DMR-Marc. Adevarul e ca este atat de versatila incat poate fi folosita intr-un domeniu mare de activitati. si medii. Atat in radioamatorism cat si civil,militar,guvernamentalsi industrial.Exista si versiunea PD795 Ex pentru medii explozive. Pentru mine e portabila WOW pana acum.

  O prezentare amanuntita a facut si Adrian, YO3HJV pe pagina lui personala

  Cateva din specificatiile date de producator sunt:

 



 

 

 

 

 

 

 

 

 

 

 

 

General data
Frequency range
   
VHF: 136 - 174 MHz
UHF: 400 - 470 MHz
Supported operation modes
   

    DMR Tier II (DMR conventional), Simulcast
    DMR Tier III (DMR trunking)
    Analog, MPT 1327

DMR Tier II in reference to ETSI TS 102 361-1/2/3
DMR Tier III in reference to ETSI TS 102 361-1/2/3/4
Channel capacity
1024
Number of zones
64 (with up to 16 channels each)
Channel spacing (analog)
12.5 / 20 / 25 kHz
Channel spacing (digital)
12.5 kHz
Operating voltage
7.4 V (nominal)
Standard battery
2000 mAh (lithium-ion battery)
Battery service life (analog)
(5-5-90 duty cycle, high transmitting power, standard battery)
VHF: approx. 11 hours / 10 hours (GPS mode)
UHF: approx. 13.5 hours / 12 hours (GPS mode)
Battery service life (digital)
(5-5-90 duty cycle, high transmitting power, standard battery)
VHF: approx. 13.5 hours / 12 hours (GPS mode)
UHF: approx. 15.5 hours / 14 hours (GPS mode)
Frequency stability
±1.5 ppm
Antenna impedance
50 Ω
Dimensions (H×W×D)
(with standard battery, without antenna)
125 x 55 x 37 mm
Weight (with antenna and standard battery)
355 g
LCD display
160 × 128 pixels, 65,536 colours, 4.57 cm, 4 lines
Transmitter
Transmitting power
VHF: 1 / 5 W
UHF: 1 / 4 W
Modulation
11 K0F3E at 12.5 kHz
14 K0F3E at 20 kHz
16 K0F3E at 25 kHz
4FSK digital modulation
12.5 kHz (data only): 7K60FXD
12.5 kHz (data and voice): 7K60FXW
Interfering signals and harmonics
-36 dBm < 1 GHz
-30 dBm > 1 GHz
Modulation limiting
±2.5 kHz at 12.5 kHz
±4.0 kHz at 20 kHz
±5.0 kHz at 25 kHz
Noise suppression
40 dB at 12.5 kHz
43 dB at 20 kHz
45 dB at 25 kHz
Adjacent channel selectivity
60 dB at 12.5 kHz
70 dB at 20/25 kHz
Audio sensitivity
+1 dB to -3 dB
Nominal audio distortion
≤ 3%
Digital vocoder type   
AMBE+2™
Receiver
Sensitivity (analog)
0.3 μV (12 dB SINAD)
0.22 μV (typical) (12 dB SINAD)
0.4 μV (20 dB SINAD)
Sensitivity (digital)   
0.3 μV / BER 5%
Adjacent channel selectivity
TIA-603
ETSI
0 dB at 12,5 kHz / 70 dB at 20 and 25 kHz
60 dB at 12.5 kHz / 70 dB at 20 and 25 kHz
Intermodulation
TIA-603
ETSI
70 dB at 12.5/20/25 kHz
65 dB at 12.5/20/25 kHz
Spurious response rejection
TIA-603
ETSI
70 dB at 12,5/20/25 kHz
70 dB at 12.5/20/25 kHz
Hum and Noise
40 dB at 12.5 kHz
43 dB at 20 kHz
45 dB at 25 kHz
Nominal audio power output
0.5 W
Nominal audio distorsion
≤ 3 %
Audio sensitivity
+1 dB to -3 dB
Conducted spurious emission
< -57 dBm
Ambient data
Operating temperature range
-30 °C to +60 °C
Storage temperature range
-40°C to +85°C
ESD
IEC 61000-4-2 (level 4)
±8 kV (contact discharge) ±15 kV (air discharge)
Protection against dust and moisture
IP67
Shock and vibration resistance
MIL-STD-810 C/D/E/F/G
Relative humidity   
MIL-STD-810 C/D/E/F/G
GPS (PD785G only)
Time to first fix (TTFF) cold start
< 1 minute
Time to first fix (TTFF) hot start
< 10 seconds
Horizontal accuracy
< 10 meters

Marți, 11 Martie 2014 19:28

Motorola DP4800

   Versatila si multifunctionala. Disponibila in ambele variante : UHF (403-527 MHz)si VHF (136-174 MHz).Destul de high-end professional radio.Folosita atat in domeniul civil cat si industrial de ceva timp DP4800 a inceput sa fie utilizata si de radioamatori mai ales de utilizatorii retelei DMR-MARC.

  Nu are rost sa fac un review de ce stie si poate la cat s-a scris deja despre ea. Cam piperat pretul pentru gustul meu.Am probleme cu stomacul.Si sincer nu imi place designul desi arata mult mai bine decat predecesoarele ei. Parca se aprope de seria MTP portabil. Asta e bine.

 

 


Specificatiile producatorului:

The fully featured digital portable radio

    Up to 1000 Channels
    Large, Full-colour Display
    Best-in-class Audio

From the factory worker building components to the road crew making repairs, MOTOTRBO can transform your enterprise and make employee interactions smarter and safer. Our best-in- class audio and unrivaled data capabilities empower people like never before.

Versatile and powerful, the Motorola Solutions MOTOTRBO™ DP4800 portable radio combines the best of two-way radio functionality with the latest digital technology. The fully-featured DP4800 portable delivers unrivaled voice and data communications, text messaging, full-colour display with day/night mode to make reading text messages easier, and best-in-class audio that includes Intelligent Audio and customizable voice announcement feature.

Available in UHF and VHF frequency bands, the DP4800 portable radio features a 5-line display, full keypad, up to 1000 channel capacity, five programmable buttons, emergency button, IP57 specifications for submersibility and FM intrinsically safe option.

The benefits of switching into MOTOTRBO™ digital radio

Keeping operations running smoothly during a change in communication systems is vital to any business. It’s easy to migrate to digital with DP4000 Series radios because they operate in both analogue and digital mode. To ease the transition even further, the dynamic mixed mode repeater functionality streamlines automatic switching between analogue and digital calls. So you can begin using MOTOTRBO radios and repeaters on your existing analogue system, and when your time and budget allow, move to digital at your own pace. By switching to digital technology you will enjoy clearer voice communications and enhanced battery life over previous models, as well as simple, but interactive, menus that will make operating and navigating the system painless.
 
Frequency ranges:

    UHF (403-527 MHz)
    VHF (136-174 MHz)

Features include:

    Up to 1000 Channels
    Large, full-colour Display
    Day/night Mode on Display
    Full keypad
    Best-in-class Audio
    Intelligent Audio and customizable voice announcement feature
    Five programmable buttons
    Emergency button
    IP57 specifications for submersibility
    FM intrinsically safe option
    Rugged design
    Voice Operated Transmit
    Busy channel lockout
    Integrated voice and data
    Digital Private line
    Lone worker
    Missed call alerts
    Caller ID
    Call forward
    Phone Book
    Capacity Plus
    IP Site Connect
    Linked Capacity Plus

Shift into digital™ today and make the change to clearer voice and data communications. The DP4800 offers the same capabilities as the DP4801 but without GPS integration, Bluetooth Audio and Data.
 

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