QRP Manual Antenna Turner Unit

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Product Description

Days can tune to the original non-resonant antenna by adding the appropriate inductance or capacitance so that the radio can work properly. The original resonant antenna, the antenna has changed due to outside influences, the SWR can be amended. Can be used as a band-pass filter, the emission can reduce unnecessary radiation outside the band, the cross-modulation and interference-band receiver can be reduced again.

Days tune kit comes with the standing wave directions, using a T-type topology network, shortwave 1-30MHz, can withstand the transmit power of 15W, the tuning range of approximately 40-300 ohms, can be very convenient for QRP communication, to ensure high efficiency radio transceiver in communication, but also allows you to fully enjoy the fun of DIY.

This kit requires some soldering electronic technology, will recognize the device, it will weld, the basic need debugging, as long as careful assembly according to package instructions can succeed. If the novice find weld on the error, intended to build the first not handle, please contact customer service personnel will get the appropriate technical guidance. This kit welding, making easy to understand, easier to learn, easy to use. Comes with standing instructions, Q9 type interface (such as the need to be self to M-type interface), using T-topology networks, QRP facilitate communication with the low-power transceiver (shoes, frogs, octopus, etc.) used to make transceiver and antenna valid match, meet your emission requirements, ensure a highly efficient radio communications.

Features:

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Manual Antenna Tuner Package Assembly Instructions

Days can tune to the original non-resonant antenna by adding the appropriate inductance or capacitance so that the radio can work properly. The original resonant antenna, the antenna has changed due to outside influences, the SWR can be amended. Can be used as a band-pass filter, the emission can reduce unnecessary radiation outside the band, the cross-modulation and interference-band receiver can be reduced again.

Days tune kit comes with the standing wave directions, using a T-type topology network, shortwave 1-30MHz, can withstand the transmit power of 15W, the tuning range of approximately 40-300 ohms, can be very convenient for QRP communication, to ensure high efficiency radio transceiver in communication, but also allows you to fully enjoy the fun of DIY.

Schematic
Study the schematic diagram carefully before commencing production.
The following picture shows the circuit diagram.
The two insert figures on the right detail the coil woudnings.
Schematic Diagram

Assembly

  1. Tools required are soldering iron, solder wire, scissors, knives, drills, wires. The following picture shows the package contained in the device.
  2. The stickers show the position of drilled holes.
    Pay careful attention to the variable capacitor holes.
    Schematic Diagram
    Schematic Diagram
  3. First solder in the standing wave detection circuit and light-emitting diodes and toggle switches installed
    This operation is the first production of finished F37-43 transformer. FT37-43 and other standing wave detection device soldered in a toggle switch on the panel, note volume without soldering too much! After soldering, the effect is as follows strict reference schematic and wiring diagram produced.
    Schematic Diagram Schematic Diagram
  4. 4, installation of variable capacitors and multi-knife switch. As shown below to prepare materials, installed as shown below
    Schematic Diagram Schematic Diagram Schematic Diagram
  5. 5, welding multi-tool switch The first step, the production of inductors, to complete the effect
    Schematic Diagram Schematic Diagram
    Pay attention to the winding direction and turns, maintain and schematic!Remove the knife switch, complete and inductance of the welding, the effect is as follows, the details of the plan
    Schematic Diagram Schematic Diagram
    The combination of a good knife switch and inductor into the panel.
    Schematic Diagram
  6. 6 installation capacitance knob
    Schematic Diagram Schematic Diagram Schematic Diagram Schematic Diagram
  7. 7, wiring assembly, in accordance with the principles of wiring, refer to the diagram
    Schematic Diagram


The Finished Product:
Schematic Diagram

Operating:
Key allocated to the standing wave test, connected to the transmitter and antenna. 2 according to key the transmitter (SSB machine to make a call), repeated to adjust inductance knob and two capacitors knob, until the red LED brightness minimum stop tuning. 3 Key allocated to the normal use, to complete the tuning of the antenna. (Kit built-in dummy load VSWR test the maximum input power of 5W, not long to launch)

Schematic Diagram Note: 1 adjusting the tuning range of about 40-300 ohms, other parameters, if necessary, change the number of turns of T106-2 to adjust. 2 Standing wave test, the input power tune Do not exceed 5W, not a long test.





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Alternative Product - Emtech ZM-2 ATU

Emtech zm2 ATU
https://steadynet.com/emtech/zm2-prebuilt-bnc-connectors

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Glenn Lyons VK4PK
glenn@LyonsComputer.com.au
Ver:gnl20190218 - pre published v0.9