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Package 1: Parts-No WIFI Method: Parts, self-welding, installation, commissioning Shell: Yes WIFI module: No Power: 5W
1、Brief Introduction
This is a very small and simple40Meter-band micro-power equal-format telegraph transmitter,Use 9~13.8VDC power supply,Can communicate with amateur radio stations hundreds of kilometers or more,Its receiving effect is very good,Can be the same expensive Comparable to commercial radio stations。 "Octopus(Rock Mite)"There are many versions:The first edition(United StatesSWLLaboratory) 、PICVersion、51Version。"Super octopus (S-RockMite)"By IS LXQQFY.com Latest Launch,Make the following improvements:
Change resistance vertical package to horizontal package,The problem that the resistance is easy to short circuit for a long time is solved.。 Power input does not distinguish positive and negative poles,And improve the power supply range,Users can use it conveniently. 13.8VCommunication Power supply,And don't worry about the loss caused by the reverse connection of the positive and negative poles.。 Standard acrylic case,Easy to Assemble,Beautiful and practical。 SupportWIFIModule(Optional),Support automatic key function、Automatic Report function。 Can be used with mobile phonesAPPConnection,Configure the sending speed、Data such as sidetone tone、Automatic report content、Display the timing of the report。 Give up the computer、Convenient outdoor stand。 You can also use a mobile phone instead of a key.,Control radio manual report。2、Main indicators
Power supply:DC 9~13.8V(Battery or linear stabilized power supply is recommended.),Do not distinguish between positive and negative poles
Antenna:50Ohm,7MHz,Standing wave ratio2.0The following
Receive quiescent current:60 mA
Emission current:600mA
Transmit power:5W
Frequency:Transmit local oscillation frequency:7023KHz;Receive local vibration frequency:About 7023-7026KHz
Working mode:CW
Electric key:Automatic Identification of manual keys and automatic keys
Automatic Report:Support
Configuration method:Mobile phoneAPPUseWIFICommunication(Bring your own hot spots)
Shell:Assembling、All inclusive
3、Circuit principle
See the last page of this document,The core of the receiving part is oneNE602,It includes a balanced mixing inside. Device, After the signal coming in from the antenna passes through two crystal filters,Enter mixer,9018The formed oscillation circuit sends out local oscillation signals at the same time.,Two The signal is mixed,Just put it directlySSB/CW Signal frequency conversion is audio,NE602The output audio is sentNE5532Do active low-pass filter and audio amplifier Big,In this way, the whole receiving process is completed.。Therefore, a receiver that directly mixes RF signals into audio is called"DC Receiver ",DC Means direct frequency conversion。In the circuit2N7000The mute circuit composed of FET is used to turn off reception during transmission.,Same TimeWIFIThe audio oscillator formed by the internal timer of the module produces side tones.,Output to headphones,Make headphones follow the hair" "Audio。Launch Part utilization9018Do oscillation circuit,Then8050Do buffer amplification,8050Also used as launch keying,Control sending and receiving electricity Road and signal switching,The final level is made upD882ComposedC Class amplifier,After amplification1:4The high frequency signal after matching the output transformer passes throughLPF Filtered antenna。
Mobile phoneWIFIThe module is an optional module for the kit.,If you do not use this module, you need to shorten it.JP1,Become An ordinary radio station that only supports manual keys。If you use this module, you need DisconnectJP1(Need attention),ThenS-Forty-9erCan PassWIFIWith mobile phonesAPPCommunication,Configure the built-in code of the radio station,Support from Move Key,Display the timing of the report。
4、Component Selection
9018 Magnification selection130 Left and Right,D882 Magnification selection200 Left and Right。T1 Yes1:4 Transmission line transformer,InFT37-43 Ferrite Magnetic ring(Black)Use on0.51 Millimeter enameled wire double hinged wire and winding6Circle,Then The head of a coil is connected to the tail of a coil.。T2 Is a high frequency transformer,InFT37-43 Ferrite Magnetic ring(Black)Use on0.51 Millimeter lacquer bag Wire winding,Primary8Circle,Secondary2Circle(Due to the consistency of the analog characteristics of the triode,If the experiment finds that the output power is slightly weak,The number of turns can be adjusted by itself. Change9:3)。L1、L2 Is a high frequency filter inductor,InT37-2 Iron powder core magnetic ring(Red)Use on0.51 Millimeter enameled wire winding16 Circle,About 25cm,The inductive quantity is1uH Left and Right。All less1000pF The capacitance of is high frequency porcelain,Greater1uF The capacitor of is aluminum electrolytic capacitor,All resistors For1/4W 5%Fixed resistance。
5、Production
5.1、Refer to the original list,Inventory of original devices。Prepare soldering iron、Solder wire、Universal meter and other tools。Welding is based on device height From low to high,Construction order:Resistance->Diode->Capacitance->Triode->Jingzhen->Two colorsLED->Whole Flow Bridge->Electrolytic capacitor->Chip->Inductor->Magnetic ring->D882->Other devices。
5.2、Resistance,Welding has no direction requirements。
The calculation of color ring resistance value refers to the following figure,Friends who are not very skilled in construction use multimeter to measure and confirm。
5.3、Diode,The model is written on the outer skin of the device.,Direction requirements when welding,The part of the device with crossbar is the direction of current destination.,With The direction of the small horizontal bar of the circuit board corresponds。
1N4001
1N4148
5.4、Capacitance,Welding has no direction requirements。
0.1uF(104)、10nF(103)、1nF(102)、100pF(101)、33pF(33)、56pF(82)、470pF(471)
5.5、Triode、Fet,The model is written on the front of the device.,Direction requirements when welding。
5.6、Jingzhen,Welding has no direction requirements。
5.7、Two colorsLED,Pay attention to the welding direction
5.8、Rectifier Bridge,Welding has directional requirements,Device+The direction of corresponds to the circuit board+Direction,Be careful。
5.9、Electrolytic capacitor,The model is written on the outer skin of the device.,Polarity requirements during welding,The direction of the device with the white bar is the negative pole.,Circuit board The direction with white shadow is negative。
5.10、Chip,The model is written on the surface of the device.,Welding has directional requirements,Welding firstICSeat,Insert the chip again。
5.11、I-shaped inductor、Color Ring inductor,Welding has no direction requirements。
5.11.1、L1 L2, 1uH(Red magnetic ring16Zan)
5.11.2、T1, 1:4Transformer(Black magnetic ring6Zan)
5.11.3、T2, Transformer(Black magnetic ring8Zan:2Zan)
5.12、D882,Need to tighten the heat sink first,Then Weld,Prevent damage to pins caused by rear heat sink。
5.13、Other devices
DCPower stand
Q9(BNC)Seat
3.5mmStereo socket
Button
Jumper
Jumper cap
Variable resistor
5.14、WIFIModule
5.15、Mounting housing,Install in the following order
6、Debugging
6.1、Before power on,Fake load,Prevent accidental launch from burning。
Directly51European resistance is soldered to the back of the circuit board as a fake load.:
UseQ9Joint and51European resistance makes a fake load:
Use professional fake load:
6.2、Power on:Power interface regardless of polarity (Internal rectification has been carried out),Battery is recommended for power supply.,DC linear stabilized power supply can also be used.,But direct frequency conversion The radio station will directly convert the power ripple into the sound of the earphone.。After power on, the face is at a certain distance from the circuit board.,Check whether there is burning caused by welding errors. Smoke appearance,If there is a timely power failure diagnosis。After tens of seconds of power on,Touch the fake load by hand,If heating indicates accidental emission caused by welding error,If Timely power failure diagnosis
6.3、Listening noise:Connection8Oputon headphones,After power on, you will hear the noise of the bottom.,This preliminary explanation The sound amplification part works normally.。
6.4、Measuring and receiving circuit:In the case of all previous work,Start testing the receiving circuit,Remove false negative Zai,Power-on bottom noise,Connect the antenna or connect a long line to the antenna seat core.,Listening noise,If there is a big difference between the two sounds(Antenna bottom Much noise),It basically shows normal。
6.5、Test launch:Fake load,In the missedWIFIIn the case of modules,JP1Plug in the jumper cap(Short Circuit ),Access manual key,Power on。Click the key at this time to enter the launch state.,The current in the unemitted state will be50mA,Current in emission state Will be in400mALeft and Right,After launching for a period of time, the fake load obviously heats up normally.。Be careful not to launch continuously for a long time.。
6.6、TestWIFIModule:Fake load,ConnectWIFIModule,DisconnectJP1(UseWIFIThe module keeps meeting and enters a continuous launch state.),Connect headphones ,Connect the key,Power on。Click nowWIFIClick on the switch,I will hear a click in the headphones.,This isWIFIEmission noise(Radio reception form Do not open in the stateWIFI),OpenWIFIThe mobile phone can be used in the stateAPPSuccessful connection,And set data。Connect the manual key or the automatic key, Can be automatically identified,In the launch state,WIFIThe indicator light of the module will be on。Click on the automatic launch inching switch,Will start the automatic launch function1Save Stored code。
7、Usage
7.1、Function diagram
7.2、Electric key,Not usedWIFIIn the case of modules,Only manual keys are supported。UseWIFIIn the case of modules,Manual key And automatic keys are supported,3.5MMThe middle channel of the plug is identified as a manual key in case of short circuit to the last ground.,Otherwise, it is recognized as an automatic key.。
7.3、Headphones choose the most common8European two-channel headphones(The most common and common)。
7.4、Antenna is the key to short wave radio,The frequency of use is required to be7MHZ、Impedance50Europe、Standing wave in1.5The following antenna。Push Recommend the following,This shop has sales。
7.4.1、GPAntenna,Vertical ground network antenna,Simple form of erection,Easy to install。There is enough ground Net to increase radiation.,Effect Rate comparable to dipolar antenna。Suitable for unconditional erectionV、Building residents with large antennas such as Yagi(Households on the fourth floor and above),For our residence In the middle layer of the building, it is impossible to add an antenna to the roof.HAM,Horizontally erectedGPAntenna should be the best choice.。
Red:Radio station、Blue:Feeder、Purple:Fishing rod(9About meter)、Yellow:Ground net(10Rice wire)、Pink:Zhen Zi(10.1Rice enameled wire)
7.4.2、Winton antenna
Winton antenna can work well in 40m/20m/10mOn three bands,In6mWork on the band also has good performance。Root According to the actual environment, there can be a variety of mounting methods.。
7.4.3、DPAntenna
DPAntenna mainly uses sky wave communication,The effect of long-distance communication is very good.,Use1:1Barron,Two-sided vibrator1/4Wavelength,Yes A very common antenna,Generally invertedVErection。
7.5、WIFIUse of modules and mobile phone software
7.5.1、Connect and plugWIFIModule,UnplugJP1Jump to the cap,And power the radio station。
7.5.2、Turn on the phone,ConnectionWIFIName"LXQQFY********",Password"********" ,8A*Is a random number。
7.5.3、Turn on the phoneAPP,Will prompt connection success,The status bar at the bottom of the screen will display the current connection status.。
7.5.4、In the running Window,The timing of radio transmission will be displayed.、IdentifiedmorseCode、Identified information,Can also control hair Shooting。
7.5.5.1、The blue bar at the top displays prompt information.,The bottom blue bar shows the connection status。
7.5.5.2、The gray prompt box in the second line shows the timing of radio transmission.,The gray prompt box on the third line shows the identified morseCode,The gray prompt box on the third line displays the identified information.。
7.5.5.3、"Manual key"Used to control the manual transmission of radio stations,"Function1""Function 2"Code for automatic reporting function,"Switch window"Used for switching between the current running window and the setting window。
7.5.6、Click on the Switch window,Will enter the settings window,Can Read、Write radio information。
7.5.6.1、Sending speed,Set up automatic reporting、The time of the minimum time slice of the manual key,It is also a running window to set up other radio stations. Reference time of report content。
7.5.6.2、"Send"Refers to updating the radio station with current information and"Save","Read "Refers to the information of the radio station,"Save"Refers to saving changes to the current information to the phone, "Recovery"Refers to restoring the current information to the information saved by the mobile phone.。
8、Component List
1/4WFixed Resistance
Capacitance
R1
0Europe
C1 C2 C3 C4 C5 C6 C7 C8
0.1uF(104)
R25 R26
10Europe
C18 C19 C20 C21 C22 C23 C24 C25
10nF(103)
R2 R3
22Europe/1W
C17
1nF (102)
R27
100Europe
C15 C16
100pF(101)
R18
200Europe
C9 C10
33pF(33)
R5 R7
1K
C27 C26
56pF (82)
R23
2K2
C13 C11 C14 C12
470pF(471)
R11 R12
10K
Electrolytic capacitor
R29 R30 R32 R31 R33 R34 R35 R28
4K7
CP1 CP2 CP3
1000uF/16V
R19 R20
22K
CP4 CP5 CP6 CP7
100uF/25V
R14 R15
47K
CP8 CP9
10uF/16V
R24
100K
CP10
1uF/16V
R16 R17
220K
Inductor
R21 R22
470K
T1
1:4Transformer(Black magnetic ring6Zan)
Transistor
T2
Transformer(Black magnetic ring8Zan:2Zan)
D1
2W10(Rectifier Bridge)
L1 L2
1uH(Red magnetic ring16Zan)
D2
1N4755A(Diode)
Integrated circuit
D7
1N4001(Diode)
U1
78L06
D3 D4 D5 D6 D8
1N4148(Diode)
U2
NE602(MatchICSeat)
Q8
2N7000(Fet)
U3
NE5532 (MatchICSeat)
Q1
9018(Triode)
Jingzhen
Q2
D882(Triode)
Y1 Y2 Y3
7.023MHz
Q3 Q4 Q5 Q6
8050(Triode)
Variable resistor
Q7
8550(Triode)
W1
47K(473)
PCBCircuit board One Piece
Other components
0.5mmLacquer bag Line section
JP1
Jumper cap and pin
Heat sink and screw(D882Use)
J1
Q9(BNC)Seat
51Europe3WElectric Resistance,As a fake load
J2
DCPower stand
Set of Shell
J3 J4
3.5mmStereo socket
Single row needle5PDouble Row needle6P(WIFIModule Use)
S1 S2
Button
WIFIModule( Optional)
PCBLayout
Schematic diagram
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