- 10 11 meters RF Power Amplifier
- AM/FM/CW QRP RF Power Amplifier for the HF 10 or 11 meterband (28MHz/27MHz)
[ Hits: 5100 | Votes: 6 | Rating: 5.67 ]
- 136 kHz QRP Transmitter
- The Marathon is a low power transmitter for 136 kHz
[ Hits: 174 | Votes: 1 | Rating: 6 ]
- 14MHz SSB transceiver
- 14MHz SSB 10mW transceiver by JF1OZL
[ Hits: 1629 | Votes: 2 | Rating: 10 ]
- 17m QRP SSB Transceiver
- 18MHz QRP SSB transceiver PEREGRINO DX is a small portable QRPp project
[ Hits: 210 | Votes: 1 | Rating: 1 ]
- 30m QRP Transceiver kit
- 38 Special, 30m QRP transceiver by Norcal QRP club, single super het receiver, full QSK with sidetone smoothly
[ Hits: 14922 | Votes: 16 | Rating: 5.31 ]
- 5 Watt 40 Meters transmitter
- This circuit is unique in that it uses a power mosfet as a final rather than a conventional bipolar transistor.
[ Hits: 8382 | Votes: 7 | Rating: 5.29 ]
- 80m SSB CW QRP superhet transceiver
- The 80m SSB & CW transceiver design is based on an already proven concept used in ATLAS amateur transistorised transceivers from 70\'s
[ Hits: 1469 | Votes: 3 | Rating: 1.67 ]
- A 40 meter SSB QRP transceiver
- This transceiver was conceived as a power-efficient, small, lighweight unit to be carried in the backpack, along with antenna and battery.
[ Hits: 2280 | Votes: 1 | Rating: 1 ]
- A Micro QRP Transceiver Project
- A family of small size QRP SSB transceivers for the 15 MHz. Includes a cigarette pocket size QRP transceiver and a larger shirt-pocket transceiver.
[ Hits: 742 | Votes: 4 | Rating: 5.5 ]
- A Portable Antenna Matching Unit
- A small HF antenna tuner project for qrp operations. Includes circuit diagrams pictures and test results by GW4ALG
[ Hits: 15159 | Votes: 7 | Rating: 5.14 ]
- BITX 6W SSB transceiver for 14MHz
- BITX is an easily assembled transceiver for the beginner with very clean performance.
[ Hits: 1825 | Votes: 5 | Rating: 9.8 ]
- Build a logging frequency counter
- Pictures, photos, source code and plans to build a logging frequency counter
[ Hits: 2101 | Votes: 2 | Rating: 2.5 ]
- Cigarette Pack for 20 meters Revised
- Revision of the Cigarette Pack 14MHz SSB QRP Micro-Transceiver
[ Hits: 128 | Votes: 1 | Rating: 10 ]
- Digital QRP SWR & Power meter
- A KD1JV Melt solder kit, a swr and power meter operating from 160 to 6 meters ideal for portable and field use
[ Hits: 6029 | Votes: 6 | Rating: 3 ]
- External Keypad for FT-817
- An external keypad for FT-817(ND), for the serious portable/field-day contester/operator. Homebrew it with the free firmware and public circuit diagram.
The circuit is very simple and takes power supply from the ACC port of the radio
[ Hits: 2560 | Votes: 2 | Rating: 5.5 ]
- F6BQU - Transceiver for 80m
- Home made 80 meters transceiver by SP5FCS using the F6BQU project
[ Hits: 2209 | Votes: 7 | Rating: 2.14 ]
- Five by Twenty
- A 5 tubes SSB QRP transceiver for 20m ham radio band
[ Hits: 811 | Votes: 2 | Rating: 4 ]
- Gimme Five - QRP SSB Transceiver
- Gimme Five reloaded, a compact 5 band QRP SSB transceiver in SMD technology. This unit covers 5 bands within the amateur radio spectrum (3.5, 7, 14, 21 and 28 MHz). Receiver is a single conversion unit with an interfrequency of 9 MHz. Transmitter uses 5 stages and has got a power level of 10 watts PEP output.
[ Hits: 265 | Votes: 1 | Rating: 10 ]
- Guide to Harmonic Filters for QRP Transmitter
- A Short Guide to Harmonic Filters for QRP Transmitter Output. - George Dobbs G3RJV
[ Hits: 530 | Votes: 2 | Rating: 9.5 ]
- Handheld SSB transceiver for 20m
- A mid-power portable/handheld SSB transceiver for 14MHz
[ Hits: 121 | Votes: 0 | Rating: 0 ]
- HF1 QRP Transceiver Project
- This project is based around the recent HF1 QRP transceiver by Ashhar Farhan, VU2ESE. The transceiver is an interesting SSB design with wide tuning range from 0-30MHz and should cover several amateur bands. The schematic for the transceiver can be found on the Minima mail list in this post with a PDF attachment
[ Hits: 648 | Votes: 0 | Rating: 0 ]
- Homebrew C-L-C QRP Antenna Tuner
- This is a C-L-C type tuner with a reflected power indicator. Tuning is done for minimum reflected power.
[ Hits: 5239 | Votes: 2 | Rating: 4.5 ]
- Homebrew QRP SSB Transceiver
- This page describes a homebrew QRP SSB transceiver built by WB9IPA.
[ Hits: 19603 | Votes: 16 | Rating: 7.94 ]
- JBOT QRP linear amplifier
new
- JBOT stands for Just a Bunch of Transistors. It is a simple, stable and easy to build 5 watts linear amplifier build out of a bunch of ordinary low power NPN transistors.
[ Hits: 44 | Votes: 0 | Rating: 0 ]
- KD1JV MMR-40 dead bug style
- A 40 meter rig with SSB and CW operating modes. This is a low power QRP rig with up to 6 watts CW or PEP output.
[ Hits: 1368 | Votes: 5 | Rating: 8.2 ]
- Knobless Wonder 7 MHz SSB transceiver
- A simple fixed frequency SSB voice transceiver for the 7 MHz amateur band
[ Hits: 1035 | Votes: 4 | Rating: 6.25 ]
- Low-Power Transceiver Kits You Can Build
- A Comprehensive roundup of the most popular QRP transceiver kits on the market in recent years in PDF format
[ Hits: 2387 | Votes: 1 | Rating: 10 ]
- M3 Electronix Semiconductor Analyzer Kit
- A workbench instrument capable of testing transistors, diodes, FETs, usefull constructing QRP circuitry.
[ Hits: 849 | Votes: 2 | Rating: 6 ]
- mcHF QRP transceiver
- Small and inexpensive homebrew HF radio 5W Output, CW SSB AM FM, DSP, Speech Processor, Sprectrum Scope, Watefall Display. mcHF is a small, home-brewed amateur radio project. Firmware is released as open source.
[ Hits: 1422 | Votes: 5 | Rating: 5.8 ]
- MFJ Cub QRP transceiver kit
- Building the MFJ Cub QRP transceiver kit for 20 meters band by G4ILO
[ Hits: 827 | Votes: 0 | Rating: 0 ]
- Micro24 Cigarette Pack SSB QRP Transceiver for 20m
- The Micro24 is a ultra compact microsize QRP SSB transceiver for the 20 meters amateur radio band. This transceiver is so small that it fits into one hand.
[ Hits: 1032 | Votes: 6 | Rating: 7.33 ]
- MicroBeacon
- The MicroBeacon is the combination of a memory keyer and controllable RF attenuator.
[ Hits: 1262 | Votes: 1 | Rating: 10 ]
- Mini ATU
- SP5DDJ mini antenna tuner for QRP operations
[ Hits: 4232 | Votes: 0 | Rating: 0 ]
- Multi-Four a VXO QRP Transmitter for HF bands
- This transmitter has been designed for use on 20 30 40 and 80 m with 5W output
[ Hits: 1042 | Votes: 0 | Rating: 0 ]
- N2WF paddles
- Paddles by Bill Nicolson, N2WF
[ Hits: 1212 | Votes: 1 | Rating: 3 ]
- N5ES - Outboard T/R Switch
- N5ES Outboard T/R Switch For QRP Separates
[ Hits: 486 | Votes: 1 | Rating: 5 ]
- N7KSB Milliwatt transmitter
- N7KSB used this 1/2 watt CW transmitter, with a roof-mounted ground-plane antenna to work all continents and over 30 countries
[ Hits: 2959 | Votes: 4 | Rating: 6 ]
- NN1G Transceiver
- 30 meters band transceiver
[ Hits: 2522 | Votes: 4 | Rating: 6.25 ]
- NUE-PSK
- NUE-PSK Digital Modem A digital modem for PSK31 field operation, without using a PC
[ Hits: 1390 | Votes: 2 | Rating: 10 ]
- Pixie 3 - 80 m QRP transceiver
- A 3500kHz - 3579kHz range transceiver, output 250 mw by SP5DDJ
[ Hits: 4015 | Votes: 11 | Rating: 6 ]
- Pixie2
- Pixie-2 schematic and part lists
[ Hits: 2033 | Votes: 1 | Rating: 1 ]
- Pocket-sized SSB CW RTX for HF Bands
- Summit Prowler 6 is a pocket-sized SSB/CW transceiver for 80, 40, 30 and 20m
[ Hits: 352 | Votes: 1 | Rating: 9 ]
- Portable PSK
- Integrated PSK station for 80 & 20 meters without using a PC Pictures and diagrams by N2APB
[ Hits: 571 | Votes: 0 | Rating: 0 ]
- Portable PSK Station
- Color photos, schematic and diagrams for an article written by N2APB for Fall 2000 QRPp. Also the subject of a presentation made at the Pacificon QRP Forum in October 2000.An Integrated and Portable PSK Station for 80 & 20 without using a PC!
[ Hits: 1161 | Votes: 0 | Rating: 0 ]
- Portable SSB transceiver for 14MHz
- 20W portable handheld SSB transceiver for 20 meters band
[ Hits: 161 | Votes: 1 | Rating: 7 ]
- QRP 12V Power Pack
- A perfect companion for your Elecraft K1 or any other (not power hungry...) QRP rig
[ Hits: 1592 | Votes: 1 | Rating: 1 ]
- QRP 20m Antenna Tuner Unit
- A QRP antenna tuner for 20 meters band
[ Hits: 10785 | Votes: 6 | Rating: 5.83 ]
- QRP 5 Mhz transceiver
- A QRP VXO transmitter for 60 meter band by GW4ALG
[ Hits: 921 | Votes: 0 | Rating: 0 ]
- QRP equipment
- Simple QRP rigs, Transceivers with single side band direct conversion receivers, Receivers, Frequency counters for QRP
[ Hits: 12777 | Votes: 10 | Rating: 8.79 ]
- QRP homebrew equipment by py2ohh
- py2ohh homebrewing of receivers, transmiters and Test Equipment for ham and swl, using cheap, easy to find or surplus components
[ Hits: 12017 | Votes: 11 | Rating: 7.55 ]
- QRP NESCAF Kit
- The New England QRP NESCAF Kit Switched Capacitor Audio Filter by N5ESE
[ Hits: 466 | Votes: 0 | Rating: 0 ]
- QRP Paddles
- Paddles by Jim Nestor WK8G/2
[ Hits: 1357 | Votes: 1 | Rating: 5 ]
- QRP Portable Rig for 80-40 meters
- A home made portable QRP transceiver designed to work on 40 or 80 meters SSB band.
[ Hits: 181 | Votes: 0 | Rating: 0 ]
- QRP Power Meter and Dummy Load
- In this article the schematic is of AA5TB QRP power meter and dummy (50 Ohm) load combination
[ Hits: 2067 | Votes: 1 | Rating: 9 ]
- QRP SWR Meter
- SWR meter for low power output measurements, dedicated to QRP operations
[ Hits: 2090 | Votes: 2 | Rating: 5 ]
- QRP transceiver for 7 Mhz
- An optimized QRP transceiver for 40 meters band
[ Hits: 1191 | Votes: 2 | Rating: 5.5 ]
- QRP Transceiver for less than $10
- Building a functioning transceiver for less than $10 by AL7FS
[ Hits: 1739 | Votes: 0 | Rating: 0 ]
- QRP Tuner Plan
- A Simple and Flexible Tuner for QRP Craig LaBarge, WB3GCK
[ Hits: 990 | Votes: 0 | Rating: 0 ]
- QRP Z-Match
- Small QRP Z-match project for max 10 W output by DL2LTO
[ Hits: 1139 | Votes: 2 | Rating: 9.5 ]
- Small Wonder Labs SW+40
- Assembling the Small Wonder Labs SW+40 QRP Transceiver Kit documented by K4ICY
[ Hits: 363 | Votes: 3 | Rating: 9 ]
- SSB 75 Meter Transceiver
- QRP transceiver for 75 meters band by WA7JHZ
[ Hits: 1275 | Votes: 3 | Rating: 2.67 ]
- Switched Capacitive Audio Filter
- NEScaf: A Switched Capacitive Audio Filter
[ Hits: 397 | Votes: 0 | Rating: 0 ]
- Switched inductor L match tuner
- A 10 to 80 meters band qrp antenna tuner by KC8AON, based on Steve Weber, KD1JV "ALT or Altoids L Tuner"
[ Hits: 6367 | Votes: 9 | Rating: 7 ]
- The Micro20 III Pocket Size SSB RTX for 20m
- DK7IH QRP transceiver for 14 MHz. This small and compact home made transceiver with a max power output of 5W, the VFO module is based on the clock oscillator chip Si5351A by Silicon Labs ATmega168 and OLED 1306
[ Hits: 212 | Votes: 2 | Rating: 10 ]
- The Minima QRP HF RTX
- The Minima is a simple and easy to operate transceiver for all the HF bands with a crisp receiver, a clean output and component cost of less than $100
[ Hits: 1220 | Votes: 2 | Rating: 5 ]
- The Rock-Mite
- A QRP RTX project by IS0VSU Franco in PDF file
[ Hits: 1526 | Votes: 0 | Rating: 0 ]
- The smk-1 on 20m
- Taking the venerable SMK-1 design to 20m and adding an RF amp, audio filter, and a TiCK Keyer ... by Wayne McFee, NB6M
[ Hits: 897 | Votes: 0 | Rating: 0 ]
- The Super Sixty transceiver
- The 'Super-Sixty' a 5 MHz 60 meters band transmitter & receive converter
[ Hits: 1299 | Votes: 0 | Rating: 0 ]
- The VK3YE Micro 40 DSB Transceiver
- A hombrew QRP transceiver for 40 meter band with many pictures, circuit and sound recording of some QSOs made with this Rig consisting of 5 transistor and one chip.
[ Hits: 928 | Votes: 1 | Rating: 10 ]
- The VK3YE Micro 40 DSB Transceiver
- AA7EE QRP DSB transceiver homebrew project
[ Hits: 1643 | Votes: 2 | Rating: 5 ]
- Tuna Tin
- A resurrection of some homebrew projects from our vintage years and the NorCal-sponsored project series in tribute to Doug DeMaw, W1FB
[ Hits: 1268 | Votes: 0 | Rating: 0 ]
- Tuna Tin 2
- The Tuna Tin 2 is a simple transmitter originally designed by the legendary author and experimenter Doug DeMaw, W1FB. The TT2 was first published in the May 1976 issue of QST.
[ Hits: 775 | Votes: 0 | Rating: 0 ]
- Tuna Tin 2 Modifications
- Tuna Tin 2 inside view and modifications
[ Hits: 426 | Votes: 0 | Rating: 0 ]
- Very simple wattmet
- A very simple QRP wattmeter project by SP5DDJ based on schematic of SWR meter developed and published by JA6HIC
[ Hits: 3944 | Votes: 0 | Rating: 0 ]
- W4ATC QRP Project
- Beginners making inexpensive, low-power shortwave transceivers from kits.
[ Hits: 2773 | Votes: 0 | Rating: 0 ]
