1 pièce module Wifi pour S-Horse QRP Kit RADIO AAM 20m CW QRP ÉMETTEUR-RÉCEPTEUR

EUR 21,60 Achat immédiat, Livraison gratuite, Garantie client eBay
Vendeur: mylove2014alice ✉️ (2.446) 97.1%, Lieu où se trouve: 深圳市, CN, Lieu de livraison: WORLDWIDE, Numéro de l'objet: 124282270975 1 pièce module Wifi pour S-Horse QRP Kit RADIO AAM 20m CW QRP ÉMETTEUR-RÉCEPTEUR . S-Horse QRP Kit HAM RADIO 20m CW QRP TRANSCEIVER - PIXIE II 14,060 KHz

Note : this item is  ONLY 1PC  wifi module 

1. Introduction

This is a very small volume of simple 20 meter band micro-power amplitude telegraph

transceiver, Despite it's small size and DC receiver limitations, it is capable of working

several hundred miles when connected to a good 20 meter antenna. Designed by

. It provide the WIFI module, with the mobile phone application

communication. Support automatic key. Provide automatic sending function. Display

sending sequential. Provide acrylic case.

2. Specifications

Power supply: 9~13.8 Volts DC, >500mA (Recommend the use of batteries)

Antenna: 50ohm, 14MHz, SWR<2.0

Receive: static current 50mA

Transmission power: 2W

Frequency: launch the vibration frequency, 14.060MHz

Receives the local oscillator frequency: about 14.060-14.090MHz

Work mode: the CW

KEY: Manual and automatic auto-detection

Automatic sending: ok

Config: the mobile phone application(WIFI)

Case: acrylic

3. Circuit principle

Reference schematic diagram. Receiving part is the core of a NE602, inside it includes

an oscillating circuit an a balanced mixer, antenna in the signal after a crystal filter, into 

the mixer, oscillation circuit at the receiving frequency oscillation, two signals through mixing,

directly put the CW signal frequency conversion for audio,NE602 output again gave  

LM386 audio amplifier, thus complete the receiving process. Circuit consisting of Q4 audio oscillator

to produce about 700Hz sine wave side tone,LM386 amplification, make the headset 

with "ditick" audio transmission. Launch part using the NE602 oscillation circuit, and then to Q6 do

the buffer amplifier, at the end of the class is made up of class C C2078 amplifier, after

amplification of the high frequency signal after LPF filtering antenna.

The WIFI module is optional. If you do not use the WIFI module, you need to short circuit

the JP1, then "S-Horse" == Ordinary CW radio. If you use the WIFI module, you need to

unplug the JP1, then you can use the mobile phone configuration data.

4. Component selection

8050 magnification is about 130, C2078 magnification is about 200. L4 is HFC, ferrite

beads in FT37-43 (black) to use the 0.5mm enameled wire around 8 times. L5 is the high

frequency filter inductance in T37-2 on the iron core is circular and (red) using 8 to 0.5 mm

enameled wire around.

Inductance is a fixed inductance (outsourcing black heat shrinkable casing).Other

devices, such as 0.47uf for monolithic capacitors, more than 10uf capacitance for 

aluminum

electrolytic capacitors, all resistance is a quarter w fixed resistance.

5. Production process

5.1 According to the list of components, check the number of components. Have tools,

Electric iron, Solder wire, and A multimeter on hand. Take welding from low to high 

order,Recommend: Resistance -> Diode -> Capacitance -> Triode -> Crystal oscillator -> 

Bridgerectifier -> Electrolytic capacitor -> Ic -> Inductor -> Magnet ring -> C2078 -> Other.

6.2 Power on: Do not distinguish between positive electrode and negative

electrode(Internal rectification), Recommend the use of battery, Can also use the DC linear

voltage stabilized power supply. If power on after tens of seconds without abnormal

heating,then it's normal.

6.3 Listen to the base noise: Connect the 8ohm headset, after power will hear a slight

voice, then it's normal.

6.4 The receiving circuit test: If connect the antenna to hear the voice and do not connect

the antenna to hear the voice of a great difference,then it's normal.

6.5 The sending circuit test: Connect dummy load, don‘t install WIFI module, short circuit

JP1, connect the key, and power on. Now you can use the key control to send, Static

current:40~100mA,Sending current:400mA, In the sending state under the virtual load 

will be fever. Note: it is not a long time to send.

6.6 The WIFI module test: Connect dummy load, install WIFI module, circuit breaker JP1,

connect the 8ohm headset, connect the key, and power on. Click “WIFI button” to open a

WIFI connection, would you hear "ka ka" sound, then WIFI is opened. Download the APP

from the www.lxqqfy, using APP to connect the WiFi module to communicate.

 package:   1pc   WIFI  MODULE 
  • Condition: Neuf
  • Marke: Markenlos

PicClick Insights - 1 pièce module Wifi pour S-Horse QRP Kit RADIO AAM 20m CW QRP ÉMETTEUR-RÉCEPTEUR PicClick Exclusif

  •  Popularité - 10 personnes suivent la vente, 0.0 de nouvelles personnes suivent la vente par jour, 1.335 days for sale on eBay. Super grande quantité suivi. 4 vendu, 1 disponible.
  •  Meilleur Prix -
  •  Vendeur - 2.446+ articles vendu. 2.9% évaluations négative. Bon vendeur avec bonne rétroaction positive et bonne quantité de cotes.

Les Gens ont Aussi Aimé PicClick Exclusif