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New product!!!

 

 

 

QRP Automatic Antenna Tuner
Mfr. No: KT-005
Ultra portable QRP ATU

Update: October 07, 2024
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KT-005 Preliminary User Manual available!!! (NEW!)
(Last update: September 09, 2024) 
 
(Last update: August 24, 2024) 

Expected availability: 
series - second half of Q4 2024

Price: 
- assembled version in the enclosure: $219 or 199 EUR
- kit for self assembly (SMT components populated) + enclosure: $175 or 157 EUR
- kit for self assembly (SMT components populated) without enclosure: $150 or 134 EUR
- enclosure: $25 or 23 EUR

Shipping cost:  (please contact directly for a detailed quote; the cost depends on the destination country; use the email provided below)
- European Union: up to 17 EUR
- Outside Europe: up to $45/40 EUR

Questions & Answers:
  Q: Why ATU KT-005 project was created?
  A: There were no ATUs on the market that were sized to fit the portable TRX QCX® and QMX® series. The KT-005 is twice as small as previously available solutions. Here we have portability without compromise.

  Q: Is the visual resemblance to QCX®/QMX® TRX coincidental?
  A: No. The ATU KT-005 is designed as an extension to QCX®/QMX® TRX series. Also in terms of visuals. Aesthetics matter. More products from this series on the way (e.g. KT-019 NanoSpeaker; check the datasheet in the bottom section).
 
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YouTube promotional video (published September 08, 2024):

 
 
 

 
 
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SWRduino
Mfr. No: KT-001K (kit)
New tool for RF experiments with Arduino Uno board
RF Dummy Load
Mfr. No: KT-002K (kit) or KT-002A (assembled)
Cost effective HF + 6 m band 50R RF dummy load

KT-001 picture
Features
  • Higly integrated QRP HF band SWR bridge up to 20 W
  • Full compatibility with Arduino™ Uno board
  • Tandem Match configuration for best directivity
  • Only THT components for easy assembly
  • Easy access to measured values (P fwd  and P ref ) from
    ANALOG_IN input section
  • Germanium diodes for best sensitivity
  • Optional trimmers for precise adjusting
  • SMA connectors for size critical applications (optional
    also BNC connectors)
  • Equipped with ISP connector (2x3 pin header)  
  • Only passive components; no current consumption 

Mechanical Characteristics
  • Full mechanical and electrical compatibility with
      Arduino™ Uno Board and LCD 2x16 shields
  • Double-layer PCB
  • Double-sided connectors for Arduino 
  • Compact design: 68 x 54 x 12 mm  

KT-002 picture

Features
  • Cost-effective HF + 6 m band 50R RF dummy load
  • 100 W continuous power handling
  • 300 W peak power handling capability
  • Low VSWR levels up to 54 MHz
  • UC-1 (PL-259) RF input connector
  • Built-in fan for reliable continuous operation
  • 2,1x5,5 DC input connector for the fan supply
  • THT components for easy assembly

Mechanical Characteristics
  • Compact design: 80 × 80 x 75 mm (with fan)
  • One layer PCB for easy components assembly
  • Solid aluminum baseplate for the input connector




------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------
NCDXF/IARU Beacon Monitor
Mfr. No: KT-003K (kit) or KT-003A (assembled)
Useful tool for monitoring NCDXF/IARU beacons

KT-003 picture
Available from June 2023!

Features

    • Usefull tool for quick HF propagation condition check
    • Time synchronized with built-in GPS receiver
    • SYNC LED for monitoring synchronization state
    •
CTRL button for band change
    • External DC_IN connector
    • Optional battery operation: 3x AAA (holes for a battery holder)
    • Current consumption: 60 mA @ 9.0 V
    • Input voltage range: 5.5-18.0 VDC
    • THT components only for easy assembly

Mechanical Characteristics

    • Metalised front panel with set of LEDs and CTRL switch
    • Dimensions: 140 x 90 x 25 mm 
    • Two layers PCB
    • Wooden case available (sold separately)

Application

    • Useful tool for easy HF propagation monitoring
    • Part of the radio shack 


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NCDXF/IARU Beacon Monitor
Mfr. No: KT-003E
Assembled version of KT-003 in wooden enclosure
Features

    • Laser cut wooden housing (3 mm thickness) with mounting holes and spacers 
    • Supplied in parts. Requires gluing.
 
CWduino QRP HF CW Transmitter
Mfr. No: KT-004K (kit)
Superportable CW transmitter for Arduino Uno board with keyer input

kt004

Features


    • Highly integrated CW transmitter compatible with Arduino Uno board
    • HF band coverage: 80, 40 and 20 m (depends on version)
    • Class-E topology for high efficiency
    • Built-in 2nd harmonic notch filter to meet CFR requirements (-43 dBc)
    • 500 mW RF output power from 5 VDC Arduino’s power supply rail
    • 2000 mW RF output power at 9 VDC
    • Transmitter keying available from pin PD4 (IOL group)
    • Precise frequency adjustment via trimmer
    • Keyer input connector (mini-jack)
    • Equipped with SMA connector for size critical applications
    • Equipped with ISP connector (2x3 pin header) 
    • Most components are THT for easy assembly
    • Example projects for Arduino: CW Beacon and CW keyer available free for download
     
Mechanical Characteristics

    • Fully mechanical and electrical compliance with Arduino™ Uno board
    • Double-layer PCB
    • Compact design: 68 × 54 x 12 mm

Application

    • Board for experiments with class E amplifier
    • Experimental CW  transmitter controlled from Arduino
    • Automatic keyer with integrated TX stage
    • Part of Arduino's controlled beacon (in CW mode)
    • Battery supplied experimental TX module
    • Part of a portable CW transceiver







  























 
Buy these products NOW on:    
    or     ebay.com

> Available offers are visible to users in Europe (EU) only.
>> If you are interested in shipping to other parts of the world, please contact us by e-mail to determine transport costs. In most cases it will cost around $35-45.

 



NEED SUPPORT...?
>> If you have any technical or offer questions, please contact us by e-mail:

 
 
 

Products under development:

 
Portable Active Speaker (KT-019)
Compact powered speaker for POTA/SOTA operation
(available Q4 2024)

Antenna Impedance Monitor (KT-014)
Novel real-time antenna impedance monitor
(available Q1 2025)


FAQ'S

Q: Is the printed manual attached with the kit?
A: Yes, every kit is shipped with a printed instruction/assembly manual.

Q: How are the sets secured during transport?
A: Each set is packed in a separate cardboard box. We do not ship kits/devices in bubble envelopes.

Q: Did you offer assembled boards?
A: For kits which are the most popular we offer an assembled version.

Q: What is the estimated international shipping costs?
A: In most cases it is in the $30 to $40 range. 
Please contact us in advance to arrange the details. We use DHL and FedEx services.


DOCS & DOWNLOADS
KT-001 SWRduino

Example file for the Arduino Uno and SWRduino board available in the Application Example document -->
PDF FileKT-001 datasheet [ENG version] 


PDF FileKT-001 SWRduino - Przyklad aplikacyjny [POL version]
KT-002 RF Dummy Load PDF FileKT-002 datasheet [POL version]
PDF FileKT-002 datasheet [ENG version]
KT-003 CW Beacon Monitor
PDF FileKT-003 datasheet [ENG version]
KT-004 CWduino

Example files for the Arduino Uno board available for free download:
- CW beacon
- CW keyer

>> Start your own project with ease!
PDF FileKT-004 datasheet [ENG version]
PDF FileKT-004 datasheet [POL version]  

arduino_icon
KT-004 example files for Arduino
KT-019 Nano Speaker (NEW!)
(Preliminary version)
PDF FileKT-019 datasheet [ENG version]
(Preliminary)

 KT-005 Automatic Antenna Tuner (ATU) - User Manual for assembled version 

 PDF FileKT-005 datasheet [ENG version]

(Preliminary)

 




 


All products are proudly designed
and manufactured in Poland.


RF measuring tools HAM radio equipment Arduino shields
RF transmitters RF loads Custom projects
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