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Description |
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New ADT Kit
covering 20, 17/15, 12/10m 3 bands with Automatic band module detection, TCXO module, and Audio Cable Adapter Kit Unit Price: 45 USD
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The Arduino Digital Transmitter is an open source QRPP
transmitter for digital modes of WSPR/JS8/FT4/FT8. It can work with a
broadcast receiver of AM mode to make a complete transceiver. Demo Video of FT8 QSO by BD6CR Subscribe to https://groups.io/g/crkits to join the discussion and view:
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ADX-S V2 Kit covering 40, 30, 20, 17, 15, 12 and 10m band with Automatic band module detection, TCXO module, Bluetooth module and Audio Cable Adapter Kit Unit Price: 89 USD
Photo: BG7IKK who built the ADX-S kit and achieved over 18,000 km DX with his EFHW antenna. Click the photo to enlarge.
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The ADX-S Digital Modes HF QRP Transceiver is the
Superhet modification of Barb, WB2CBA's
open source Arduino Digital Xcvr inspired by the receiver design idea of JA9TTT. The
receiver
performance is much improved compared with the original direct conversion
design at the cost of adding only two components.
Several hardware and firmware bugs are fixed so you can build with better
experience, thanks to the feedback from dozens of the beta testers and early
domestic customers. The code is open source so you can customize the radio with your own
idea. It works with WSJT-x, JTDX on PC or FT8CN on Android phones in VOX mode.
New! iFTx on iPhone or iPad is also supported on V2 hardware with Bluetooth audio connection. ADX-S Review by Peter Parker, VK3YE ADX-S V2 Field Demo by BD6CR in English ADX-S V2 and FT8CN Demo by DL1SER in German ADX-S eHam product review Paper based:
Group Build:
Subscribe to https://groups.io/g/crkits to join the discussion and view:
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Classic PCB Kit (CPK) Series CPK1 = Pixie2023 40m or 20m, CPK3 = KT Receiver, CPK4 = QRPP CW TX
CPK-1 Pixie2023: CW Transceiver with clean output
CPK-3 KT: Modern FM/MW/SW receiver for minimalists
CPK-4 QRPP CW TX with bigger and cleaner RF output than Pixie2023
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You can share the kit building fun with club members and youngsters with these classic PCB kits. For example, after the SMD part pre-assembly, some primary school students of BH4GYJ (Shanghai Fushan Foreign Language Primary School Club Station) can build CPK3 KT Receiver successfully with the help from their teacher Mr. Li, BH4FGJ. Read this post. Pixie2023 Review by Peter Parker, VK3YE CPK-3 KT Receiver Review by Peter Parker, VK3YE CPK-3 KT Receiver in Case and More Listening by VK3YE CPK-3 KT Receiver Kit Listening from Beach by VK3YE WB2CBA Barb's Review of CPK-3 KT Receiver CPK-4 QRPP CW TX Kit Build by BD6CR in English Paper based:
Subscribe to https://groups.io/g/crkits to join the discussion and view: |
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R3500D
ARDF Receiver
Kit Unit Price: 39 USD including tracked air shipping. Earbuds are removed from the kit as they are magnets. Ask us if you need the kit factory assembled.
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R3500D is the upgraded version of the well known
PJ-80
80m direction finding direct conversion receiver kit. 3500~3600 kHz
coverage. Case color is random in black, orange, green and blue.
Subscribe to https://groups.io/g/crkits to join the discussion and view: Note that the LO frequency is at half of the working frequency. It is by design, no worries. PJ-80 eHam product review average rating 5.0/5.0
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Documents Archive
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KN-Q7A manual, quick guide, part list, and drilling template
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CS-series Detailed Manual with Photos, Download product photos ,Arduino Sketch for CS-17/15, CS-20 (updated), CS-40
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CS-xxV Documentations
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D4D Documentations
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13 Transistor Transceiver for Digital Manual and Documentations
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Sandwich digital VFO Detailed manual with photos, Arduino Sketch for KN-Q7A 80m, 40m, and 20m band, and Detailed manual in Spanish by Jon, EA2SN
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CRK-10 manual including part list, quick guide in English
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CRK-10A Documentations
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Choc perfboard Build a SSB transceiver with Choc Perf Board
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HT-1A User manual, kit building instructions and schematics in zipped format
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PJ-80 manual, supplement manual by CRKITS and part list (with manual errata) in English
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Gipsy Portable Dipole Antenna manual in English
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Join our group at https://groups.io/g/crkits to be able to access manuals and other documents and photos