qrp transceiver

117 links - and 3 categories

End fed half wave antenna 40/30/20m - For my SOTA activities, i recently bought a QRP transceiver QRP SW-3B, which is a three-band QRP CW only for 40/30/20 m. So, i needed an antenna that would allow to use these 3 bands in SOTA portable activity. Already having some experience with the EFHW antenna, i decided to build one for 40/30/20m.
[ Hits: 168 | Votes: 0 | Rating: 0 ]

K1FM Mini Magnetic Loop - Original HF magnetic loop antenna designed by the author to work in conjunction with QRP transceivers like the FT-817 in portable operations. In this configuration the loop can operate from 30 to 10 meters. Using a two spires radiator of the same diameter it also covers 40 meters.
[ Hits: 118 | Votes: 1 | Rating: 8 ]

QRP Z Match Antenna Tuner Project - A Home made antenna tuner for QRP transceivers. This small tuner is the ideal for portable operations with random length wires or whenever you have not a resonant antenna.
[ Hits: 109 | Votes: 1 | Rating: 10 ]
Budget-Friendly QRP T-Tuner and SWR Bridge - In the pursuit of an affordable matching and SWR indication solution for the Pixie-based transceiver system this T-Tuner and SWR bridge unit, while not groundbreaking, proves to be a cost-effective performer. With real-world impedance testing yielding a worst-case loss below 0.9 dB, the unit efficiently matches all bands on 80 M to 10 M ham bands, making it a valuable addition to the QRP system.
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WA3RNC QRP Kit Online Store - Manufacturer of the TR-35 4-Band 5-Watt CW Transceiver Kit
[ Hits: 203 | Votes: 1 | Rating: 10 ]

(tr)uSDX - The (tr)uSDX is a 5-Band / Mulitmode QRP Transceiver in Pocket Format (90x60x30mm - 140g). It features a highly efficient Class E PA and Supports CW/LSB/USB and AM/FM. Right now it covers 80/60/40/30/20m and in Future there will be support for 17/15/12/10m
[ Hits: 202 | Votes: 2 | Rating: 10 ]

EA2CW QRP Portable radio setup - A portable QRP setup based on 20/30/40m QRP CW-only SW-3B transceiver, 2500mAh 5C LiPo battery (147g), Hands Free Nanokeyer
[ Hits: 105 | Votes: 0 | Rating: 0 ]

Chinese uSDX Review - A review of the Chinese version of uSDX USDR HF QRP Transceiver. Author made an extensive review of receiver and transmitter features.
[ Hits: 279 | Votes: 1 | Rating: 10 ]
SW-3B QRP CW RTX - The SW-3B is a Three-band CW QRP transceiver, Weight 180g, output power 5W at 12v, 2W at 9v, works on 40 30 and 20 meters band
[ Hits: 121 | Votes: 0 | Rating: 0 ]
Pititico CW Transceiver - Pititico CW QRPP transceiver designed by PY2OHH. One of the smallest and simplest transceivers designed around a 2N2222 transistor.
[ Hits: 100 | Votes: 0 | Rating: 0 ]

Yaesu FT-818 Details - Yaesu FT-818ND HF VHF UHF All mode portable transceiver. Announced in 2018, production of this QRP all mode portable transceiver has been discontinued some years later.
[ Hits: 42 | Votes: 0 | Rating: 0 ]
Yaesu FT-818 Review - An owner point of view of the Yaesu FT-818 QRP transceiver capable to work HF VHF UHF in CW, AM, LSB, USB, FM, PACKET.
[ Hits: 34 | Votes: 1 | Rating: 9 ]

Arduino QRP Transceiver: DIY Success on HF Bands - This article introduces an Arduino-based QRP CW Transceiver designed for lower HF bands. The journey begins with the Wotduino, evolving from a keyer to a multi-mode beacon. The development includes a QRP transmitter and culminates in a receiver inspired by Roy Lewallen design. The transceiver, controlled through a control bus features a signal path, modulation, filtering, and adjustable frequency settings. Despite initial testing intentions, successful QSOs on 80 and 40 meters showcase its functional capabilities.
[ Hits: 109 | Votes: 1 | Rating: 1 ]
Arduino Digital Transceiver Project - Arduino Digital Transceiver (ADX) is a low-cost HF transceiver for digital modes. This Arduino-based project, inspired by QDX, features four bands, including 80m and 20m, supporting FT8, FT4, JS8call, and WSPR. Designed for simplicity and affordability, it uses an Arduino Nano, SI5351 module, and CD2003GP receiver. The ADX project emphasizes easy procurement, construction, setup, and operation, making it an accessible option for QRP enthusiasts. The firmware update enhances functionality, including CAT control support.
[ Hits: 94 | Votes: 0 | Rating: 0 ]

BITX QRP RTX - An easy to build 6 watts SSB transceiver for 14MHz. BITX is an easily assembled transceiver for the beginner with very clean performance. Using ordinary electronic components and improvising where specific components like toroids are not available, It has a minimum number of coils to be wound.
[ Hits: 103 | Votes: 0 | Rating: 0 ]

QRP Transceiver for 15m - This is a CW 1W transceiver with only three transistor. The author has been able to make QSO by this little transceiver with Saga, Asahikawa (domestic far distance city),and Indonesia and Taiwan.
[ Hits: 85 | Votes: 0 | Rating: 0 ]

Homebrew uSDX TRX - The Homebrew uSDX SDR TRX is an experimental transceiver primarily designed for CW and Digital modes due to limitations in meeting FCC requirements for SSB. Developed from the QRP Labs QCX, it incorporates advanced SDR features while utilizing an 8-bit ATMEGA328P. The µSDX community fosters open-source development with various design streams and versions, encouraging collaboration and sharing among enthusiasts.
[ Hits: 47 | Votes: 0 | Rating: 0 ]