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If you need to buy or get things from the different suppliers or Aliexpress, Taobao online shop, we can offer you the service in China.
For more information, Pls check as below:

Shopping-Shipping Agent service - Dwmzone

Shopping-Shipping Agent service – Dwmzone

4.Download

Shopping-Shipping agent form

You can check this link and see

How to fill the Shopping-Shipping agent form ?

5.Contact information

E-mail: service@dwmzone.com Gmail: dwmzone@gmail.com

Wechat:ameisina Skype:ameisina

How to fill the Shopping-Shipping agent form ?

How to fill the Shopping-Shipping agent form ?

Shopping-Shipping Agent service from China 

1.Select the Shopping-Shipping agent.

click-shopping-shipping agent

click-shopping-shipping agent

2.Download the Shopping-Shipping agent form.

 

download-shopping-shipping-agent

download-shopping-shipping-agent

3. Open the downloaded Shopping-Shipping agent form.

Shopping-Shipping-agent-form

Shopping-Shipping-agent-form

You will see There Two Services BUY FOR ME and SHIP FOR ME.

3. There are required information for delivery. Contact name, Delivery address, Phone number,Some country or region also need the Tax ID.

Shopping-Shipping-agent-form-contact-information

Shopping-Shipping-agent-form-contact-information

4. BUY FOR ME required information.

BUY-FOR-ME-required-information

BUY-FOR-ME-required-information

5. SHIP FOR ME Required Information. Must requre Your supplier Name, Part name and the total quantity.

SHIP-FOR-ME-must-required-information

SHIP-FOR-ME-must-required-information

6. After you fill the required information then you send the form back to us.we will check and confirm with you for more details.

Here is our contact information:

E-mail: service@dwmzone.com Gmail: dwmzone@gmail.com

Wechat:ameisina Skype:ameisina QQ:544209846

See the procces Pls visit:

Shopping-Shipping Agent service from China 

 

 

FC-301DU User Manule

FC-301DU UHF&VHF 1-5W High Power Multi-channel Narrowband Data and Voice Radio Transceiver Module

SPECIFICATION

GENERAL
Equipment Type…………………………………Data Radio
Performance Specification…………………………TIA/EIA-603 & ETS 300-113
Band ……………………………………………UHF/VHF
Channel Spacings………………………………25KHz,12.5KHz programmable
RF Output Power……………………………….1W / 5W Programmable
Modulation type ………………………………..16K0F3E,8K5F3E
Intermediate Frequency………………………… 45.1MHz & 455KHz
Number of Channels…………………………….16
Frequency Source ……………………………….Synthesizer
Operation Rating…………………………………Intermittent
5:5:90 ( TX: RX: Standby )
Power Supply ……………………………………12.5V DC Nominal Voltage
Temperature Range
Storage………………………………………from –40°C to +80°C
Operating……………………………………from –30°C to +60°C
Current Consumption
Standby (Muted) ……………………………≤40mA

Transmit 5 Watts RF Power …………………< 1.5A
Transmit 1 Watt RF Power…………………..<0.8A

Frequency Bands : ………………………………RX UHF: U1 400 – 470 MHz
…………………..…………….TX UHF: U1 400 – 470 MHz
Dimensions………………………………………..(120mm)L x (60mm)W x (20mm)H
Weight……………………………………………..≤150 grams

TRANSMITTER
Sustained Transmission…………………………… Nominal conditions
Time: 5 10 30 sec
Power: >95% >95% >90%
Frequency Error…………………………………..±2.5 ppm
Frequency Deviation:
25kHz Channel Spacing……………………..≤±5.0kHz,
12.5kHz Channel Spacing……………………≤±2.5kHz,
Audio Frequency Response………………………. Within +1/-3dB of 6dB octave
@300Hz to 2.55kHz for 12.5kHz C.S
@300Hz to 3.0khz for 25kHz C.S
Adjacent Channel Power
25kHz…………………………………………< 70 dBc @ Nominal Condition
<65 dBc @ Extreme Condition
12.5kHz ………………………………………< 60 dBc @ Nominal Condition
< 55 dBc @ Extreme Condition
Conducted Spurious Emission …………………….< -36 dBM
Modulation Sensitivity……………………………. 100mV RMS@60% peak Dev.
Hum & Noise:
25kHz Channel Spacing………………….….>40 dB (with no PSOPH)

12.5kHz Channel Spacing………………..……>36 dB (with POSPH)
Modulation Symmetry ……………………………..<10% Peak Dev@1kHz input
for nominal dev +20dB
Load Stability……………………………………No osc at >= 10:1 VSWR all
phase angles and suitable antenna
No destroy at >= 20:1 all phase angle

RECEIVER
Sensitivity(12dB Sinad) …………………………..UHF <-117 dBm,
VHF<-118dBm@Nom.Condition
Amplitude Characteristic………………………….<±3dB
Adjacent Channel Selectivity:
25 kHz Channel Spacing …………………….≥70dB @ Nom.,
12.5kHz Channel Spacing…………………….≥60dB@Nom.,
Spurious Response Rejection………………………70dB
Image Response…………………………………… > 70 dB
IF Response ………………………………………. >70 dB
Others………………………………………………> 70 dB
Intermodulation Response Rejection………………≥65 dB
Conducted Spurious Emission @ Nominal Conditions………<-57 dBm
AF Distortion ………………………………………………….<5% @ Nom.,
<10%@ Extreme Condition
RX Hum & Noise:
25.0kHz CP……………………………………………< 40dB No PSOPH
– 5 –
12.5kHz CP ………………………………………..…< 40dB with PSOPH
Receiver Response Time …………………………….< 20ms
Squelch Opening sensitivity: ………………………-118dBm
Squelch Closing sensitivity ……………………….. -121dBm
Squelch Attack Time:
RF Level at Threshold ………………………… <40ms
RF Level at Threshold +20dB…………………<30ms
L.O. Frequency Temperature Stability…………….1 st <2.5 ppm,
2 nd <10 ppm for –30°C to +60°C
L.O. Frequency Aging Rate………………………….±2 ppm/year
REFERENCE CRYSTAL
Frequency…………………………………………………. 13MHz
Temperature Characteristic……………………………+/- 2.5PPM
from –30°C to +60°C
Aging Rate……………………………………………….< 2ppm/year in 1 st year
<1ppm/year thereafter
TX to RX ………………………………………………… < 20
RX to TX ………………………………..……………….. < 25

ENVIRONMENTAL ( performance without degradation unless stated)
Temperature……………………………………………… deg C
Operating………………………………………………….-30° to +60°C Degradation
Specified@Extreme
Storage …………………………………………………… -40°C to +80°C
Recharging ……………………………………………… -10 to +55
ESD………………………………………………………. 20kV (C-MIC >= 15kV)
Vibration……………………………MIL STD 810 C Procedures I,II,Vand IEC68 26

MAINTENANCE AND REPAIR

GERNERAL
When removing or fitting, use the Exploded View and Parts List, located on page 61 in conjunction with the following procedures:
·WARNING: Disconnect the FC-301D from all external equipment at the
connector prior to disassembly.
REMOVING & REPLACING THE UPPER COVER
Removing the Upper Cover:
1. Unscrew the four side cover mounting screws located on the side cover of the radio.
To replace the Upper Cover:
1. Reverse the steps taken to remove the Upper Cover.

FC-301D-1

Figure 1-Upper cover removal

REMOVING&REPLACING THE INTERPHASE CONNECTION BOARD
Removing the interphase connection board:
1.Remove the Upper Cover (refer to Removing & Replacing the Upper Cover).
2.Disconnect the DB9 pin connector on CON401.
3.Unscrew the two mounting screws on the Amplifier module.
4.Remove the interphase connection board directly.
To replace interphase connection board:
1. Reverse the steps taken to remove the interphase connection board

FC-301D-2

Figure 2 Interphase connection board removal

REMOVING & REPLACING THE RF BOARD
Removing the RF Board Assembly:
1.Remove the Upper Cover (refer to Removing & Replacing the Upper Cover).
2.Remove the interphase connection board (refer to Removing & Replacing the interphase connection board).
3. Unscrew the 4 mounting screws
4. Unsolder the antenna connector cable.
5. Remove the RF Board Assembly.
To replace the RF Board Assembly:
1.Reverse the steps taken to remove the RF Board Assembly.

FC-301D-3

Figure 3 RF BOARD Removal

The detailed information on programming the FC-301D radio in following procedures.
. To start the FC-301D Program Software and read the parameters of FC-301D RF Link Module
? Firstly make sure to connect data port J1 of FC-301D with PC via RS232 data cable.
? Double click the “FC-301D QuickSet V3.2“. The software will enter into main interface of FC-301D as the following:

Run the ‘Port’ in the main menu or press the Icon ‘Port ’ , The software will enter into the Port parameter setting interface.

FC-301D-Run-port

Run ‘ Program ’ -> ‘ Read ’ in the main menu, The software will detect and read the parameters of FC-301D.

FC-310D-Run-Program

After Run ‘ Program ’, FC-301D will automatically detect the FC-301D RF link module and display the parameters of the module on the screen.

. To change the parameters of the RF link module
After reading the previous parameters, User can change the parameters of the module to new ones.
Model:Only for check, it can not be changed.
Serial No:Input 5 digits for ID code. Zero will be added to the front.
The value less than 65536.
Port Baud:Optional from the list box
Parity: Optional from the list box
Channel: Only for check, it can not be changed

FC-301D-change-parameter

. To write the parameters into the module
Run ‘Program’ -> ‘ Write ’ in the main menu, The changed parameters will be written into the FC-301D module.

FC-301D-Write-parameter

FC-301D-Write-parameter-1 FC-301D-Write-parameter-2

. To read / write the frequency
Click the button ‘Read Frequency’, the frequency of the channel from
1-16 will be displayed on the screen.

FC-301D-Read-channel

FC-301D-Read-channel-1

New frequency can be input into each channel and click the ‘Write
Frequency’ button, the new frequency will be written into the module.

FC-301D-Write-Frequency

FC-301D-Write-parameter-1

FC-301D-Write-frequency-ok

. The switch between 12.5kHz and 25kHz channel spacing In the ‘Band Control ’ interface, Click ‘Read’ , the current channel spacing 12.5kHz or 25kHz can be read out. Click ‘Set’, the selected
channel spacing 12.5kHz or 25kHz can be written into the module.

FC-301D-Change-channel-spacing

. To adjust the parameters
? While the module works in transmission or reception status on one fixed frequency, Click ‘Set’ in ‘Adjust Parameter’ to adjust the sensitivity or the RF power on one frequency. Click ‘Read’ to read the adjusted parameters of the current frequency.
?Turning Value ,the value range is between 0 and 255; when its value is 0 ,the corresponding voltage of CPU APC/TV pin is 4.0V,as the value increase the voltage of CPU APC/TV will decrease correspondingly . when its value is 255, the Voltage of CPU APC/TV pin is 0V. it is in inverse proportion relationship between two value.
? Set turning value of RX (TV Value)
Fristly adjust CON1 pin8 SW port to low level and change RF at the status of RX ;

FC-310D-Adjust-parameter

Secondly input the corresponding value in ‘Adjust Parameter’ according tochannel frequency ;you will see ‘Setting successful’after you click ‘set’.
Otherwise you will see ‘Setting no answer’which indicate setting fail.

FC-301D-Adjust-parameter

Thirdly,after setting success you can wait for 10 seconds or switch channel button to make the newest parameter be stored in CPU.

? Read the Turning Value of RX (TV Value)
Fristly adjust CON1 pin8 SW port to low level and change RF at the status of RX ;
Secondly click the button ‘Read’ in Adjust Parameter,you will see ‘Reading success’message and the detail parameter below; otherwise you will see ‘Reading no answer’and it indicate read failed it need to read again .(Without necessary please remmeber not to change the turning
value which have set in factory ,otherwise it will affect other technologic parameter in RF)
? Set turning value of TX (APC Value)
Fristly adjust CON1 pin8 SW port to low level and change RF at the status of RX ;
Secondly input the corresponding value in ‘Adjust Parameter’ according to channel output frequency ;you will see ‘Setting successful’after you click ‘set’.Otherwise you will see ‘Setting no answer’which indicate setting fail.
? Read the Turning Value of TX (TV Value)
Fristly adjust CON1 pin8 SW port to low level and change RF at the status of TX ;
Secondly click the button ‘Read’ in Adjust Parameter,you will see ‘Reading success’message and the detail parameter below; otherwise you will see ‘Reading no answer’and it indicate read failed and need to read again .
. To save or open parameter file
? Run ‘File’->‘Save’ menu, The ‘Save’ interface will be displayed on the screen, Input the file name for saving, and press ‘Save’ button, the current parameters of the module will be saved into the appointed file for later use.

FC-301D-Run-save

? Run ‘File’->‘Open’ menu, The ‘open’ interface will be displayed on the screen, Choose the file name which saved the parameters, and press ‘Open’ button, the parameters of the module saved in the file will be displayed on the screen.

FC-301D-RUN-OPEN

ALIGNMENT PROCEDURE
The FC-301D is by design, broad band covering UHF(400-470 MHz) and should require no special alignment, unless repairs are performed on the receiver portion. Should repairs be necessary, use the “Alignment Points Diagram” on page, in conjunction with the following procedures:
PCB Testing
1.Adjust the power supply voltage to 12.5V before connect FC-301D to power supply, switch the power on. Then set up the channal frequency (Refer to the attached list on page 60 )
2. Switch CF3 to 16 channels and set the transceiver to TX . Adjust VR1 and read the TX frequency from the equipment until the TX frequency is 469.9750MHz .adjust TC301 and test the VT voltage of TP1 until the voltage is 4.7±0.2V; switch CF3 to 8 channels and test the VT voltage ,it should be 0.7±0.2V
3. Switch CF3 to 16 channels and set the transceiver to RX . Read the TX frequency from the equipment ,it should be 424.8750MHz .adjust TC302 and test the VT voltage of TP1,the voltage should be 4.7±0.2V; switch CF3 to 8 channels and test the VT voltage ,it should be 0.7±0.2V

Audio Test of TX

1.Set Wireless Conmmunication Test set at the status of RX Test
2. Set the audio out of Wireless Conmmunication Test set as 1K; the amplitude of sinusoidal signal      as 100mV.
3.Connect the audio output to CONI pin1 of FC301D,switch S1 to MIC-IN;then adjust the RF at the status of TX , connect the audio output to TP4 ,adjust VR403 for a reading of audio signal amplitude as 58mV and distortion is less than 3%
4.Connect the audio output to CONI pin1 of FC301D,switch S1 to DATA-IN;then adjust the RF at the status of TX , fristly connect the audio output to TP3 ,adjust VR404 for a reading of audio signal amplitude as 100mV and distortion is less than 3%; Secondly connect the audio output to TP4 ,adjust VR403 for a reading of audio signal amplitude as 59mV and distortion is less than 3%; thirdly connect the audio output to TP5 ,adjust VR407 for a reading of audio signal amplitude as 0.7V and distortion is less than 3%.
RF Test of TX
1.Set Wireless Conmmunication Test Set at the status of TX Test.
2.Fristly testing TP6 , fine turning VR1 to control the error between TX frequency and standard frequency among ±300Hz.
3.Set the channel space as wide-band,fristly test TP6 by set the output frequency of Wireless Conmmunication Test set as 1KHz; the amplitude of sinusoidal signal as 100mV.Secondly test channe 1 ,8 and 16 separately for a reading of TX power 20mV+5mW, frequency deviation 3KHZ+0.5KHz and distortion is less than 3%; Also off the output signal of Test Set the frequency
deviation should less than 70Hz.
4.Set the channel space as narrow-band,fristly test TP6 by set the output frequency of Wireless Conmmunication Test set as 1KHz; the amplitude of sinusoidal signal as 100mV.Secondly test channe 1 to chennel 8 separately for a reading of TX power 20mV+5mW, frequency deviation 1.5KHz+0.5KHz and distortion is less than 3%; Also off the output signal of Test Set the frequency deviation should less than 70Hz.
Passband Test of RX
1. Setting of Test Set(HP8920) as follow :
TX Test—- SPEC ANL—- RF Ant—–Center Freq ——-Input scanning frequency——Ref Level set as - 20dBm——-Span set as 200MHz——-Main select RF Gen ——-Eixed———Amplitude set as -40dBm—- RF Out.
2. Connect the ANT IN port of Test Set to TP7 , and see its frequency spectrum as below

FC-301D-spectrum
3. Each frequency have to set to corresponding turning value ,for detail turning value please refer to attached diagram on page

TX Test of FC301D
1.Set Wireless Conmmunication Test Set at the status of TX Test; Also set FC-301D at the status of TX .
2.Fine turning VR1 to meet the error between TX frequency and standard frequency among ±300Hz.
3.Please refer to the diagram on page ? to adjust turning value for each channel , to control the TX output power of each channel to be 4.5W-6W and current to be less than 1.5A
4.Set the output frequency of Wireless Conmmunication Test set as 1KHz; the amplitude of sinusoidal signal as 100mV;testing for reading of frequency deviation to be 3KHz+0.5KHz for wide-band and 1.5KHz+0.5KHz for narrow band; and the distortion is less than 3%; Also off the output signal of Test Set the frequency deviation should less than 80Hz.

 RX Wide Band Test of FC-301D
1.Set Wireless Conmmunication Test Set at the status of TX Test , and the modulation signal of Test set have to be setted field intensity as 1mv ,frequency as 1KHz and frequency deviation as 3kHz. Also set FC-301D at the status of RX
2.Please refer to wiring diagram and operation on page 49 to testing for a reading of AF OUT level to be 210+20mV and ditortion less than 5%
3.Please refer to Turning Value on page ? ,set the RF output signal of the Test Set to 0.28μV and test the Sinad,it should be better than 12dB.
4.When Sinad drop to be 10dB, SQ should be high level output and Voltage range should be more than 4.5V; When Sinad rise to more than 12dB, SQ should be low level output and Voltage range should be less than 0.4V;
5.Testing the RSSI output level should to be 2.2V-0.8V
6.Testing the audio output power to 2.2V+50mV.

RX Narrow Band Test of FC-301D
1.Set Wireless Conmmunication Test Set at the status of TX Test , and the modulation signal of Test set have to be setted as follow ;field intensity as 1mv ,frequency as 1KHz and frequency deviation as 1.5kHz. Also set FC-301D at the status of RX
2.Please refer to wiring diagram and operation on page ? to testing for a reading of AF OUT level to be 210+20mV and ditortion less than 5%
3.Please refer to Turning Value on page 60,set the RF output signal of the Test Set to 0.35μV and test the Sinad,it should be better than 12dB.
4.When Sinad drop to be 10dB, SQ should be high level output and Voltage range should be more than 4.5V; When Sinad rise to more than 12dB, SQ should be low level output and Voltage range should be less than 0.4V;
5.Testing the RSSI output level should to be 2.2V-0.8V
6. Testing the audio output power to 2.2V+50mV.

ALIGNMENT POINTS DIAGRAM

FC-301-Diagram

DIGITAL BOARD ALIGNMENT POINTS

FC-301-Select-switch

TROUBLESHOOTING GUIDE

TROUBLESHOOTING-GUIDE

WIRING DIAGRAM

FC-301D-Wire-diagram

Shoping around from the HUAQIANGBEI market-3

Shoping around from the HUAQIANGBEI market-3

There are thousands thousands parts most parts i even dont know how to name it. Is there  any one want to invovle this businese please contact me.for more discutions please visit the forum http://dwmzone.com/forum/index.php?board=2.0

Mini current meters

Mini current meters

IC Programmer

IC Programmer

IC Programmer socket

IC Programmer socket

USB, 1394 conectors.

connectors socket

connectors socket

huaqiangbei-Shiny day

Shoping around from the HUAQIANGBEI market-1

Shoping around from the HUAQIANGBEI market-1

Most the counter owner has relative on HUAQIANGBEI they may come from same place, maybe from same vallage or same town. they say the same dailect. it seams like a closed business loop circut, Money, Information and products transfer around this closed loop.

Huaqiang Electronic World

Huaqiang Electronic World

Huaqiang Electronic World

Huaqiang Electronic World

This conter business scop included the BNC,TNC,N,UHF,QMA,L9,SMA,SMB,SSMB,SSMA,SSMC ,MCX, MMCX,7/16(L29),7/8,1/2. and aslo the radio friquency cable: SFF(RG series), SYV,1/2.7/8 and all kinds of  arrester, attenuators and connectors for cell phone.

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Huaqiang Electronic World-BNC connectors

Huaqiang Electronic World-BNC connectors

Huaqiang Electronic World A216

switch

Huaqiang Electronic World-Connectors

Huaqiang Electronic World-Connectors

Huaqiang Electronic World-Connectors

Huaqiang Electronic World-Connectors

Huaqiang Electronic World-Connector

Huaqiang Electronic World-Connector

Huaqiang Electronic World-solar panel

Huaqiang Electronic World-solar panel

Huaqiang Electronic World-IR sensor

Huaqiang Electronic World-IR sensor