20 meter qrp

28 links

40/20 Trap Dipole - An easy to make trap dipole antenna for 40 and 20 meters
[ Hits: 8052 | Votes: 10 | Rating: 5.77 ]

20m QRP Dipole - Instructions to build a portable dipole for 20 meters
[ Hits: 16720 | Votes: 6 | Rating: 9.17 ]

End Fed Half-Wave Antennas - An interesting article on end fed half-wave wire antennas with a couple of original experiments. Author illustrate the role of the QRP matchbox, and a 40/20 meter antenna with a center stub making it a large bandwidth antenna for 40 and 20. Includes also an 80/40 end fed with the typical coil to make it available on 80 merts band.
[ Hits: 288 | Votes: 2 | Rating: 10 ]

QRP Fan Dipole - Attic Fan dipole antenna that allow to operate QRP from 40 metres to 10 metres, specifically 40, 20, 17, 15 & 10 meter band
[ Hits: 8498 | Votes: 8 | Rating: 5.63 ]

The FXTenna Portable Antenna - KD5FX, 20 through 6 meters, QRP to full legal power, lightweight, easy to carry
[ Hits: 661 | Votes: 0 | Rating: 0 ]

QRP 20m Antenna Tuner Unit - A QRP antenna tuner for 20 meters band
[ Hits: 10841 | Votes: 6 | Rating: 5.83 ]

A HF dual band trap antenna - A dual band coax trap antenna designed to work on 20 and 30 meters or on 20 and 40 meters band by Phil W0XI
[ Hits: 932 | Votes: 4 | Rating: 6.5 ]

OH7SV Matti Hohtola Ham Projects - The most modern QRP transceiver in 2004,Direct Conversion HF Transceiver with DDS LO, 50 ohm to 200 ohm HF wide band transformers, Wilkinson splitter for RX measurements, Windom baluns 2001/2004, Ferrite rod antenna for 80 meter, Magnetic Loop Antenna for 80 m, Mascot Switched PSU 9320 modification to 8A peak current, 150W MOSFET linear amplifier for 80m, 80 m HF SSB/CW Transceiver
[ Hits: 20374 | Votes: 36 | Rating: 8.11 ]

QROlle, 6 Band QRP-rig - QROlle QRP-rig. 6 Band Shortwave rig with SMD:s. 160, 80, 40, 30, 20, 17 meters SSB/CW QRP-rig. All documentation in English
[ Hits: 2236 | Votes: 2 | Rating: 9.5 ]

Six Meters: An Introduction - An extensive introduction to 50 mhz band, (6 meters)By Dave Finley N1IRZ, appeared in QRPp Winter 2000
[ Hits: 7121 | Votes: 10 | Rating: 5.7 ]

IK3OIL Ham radio homebrewing - A site devoted to Amateur Radio Homebrewing, CW-decoder, CW QRP Transceiver for the 40 & 20 meters band, CMOS reader
[ Hits: 4426 | Votes: 10 | Rating: 4.5 ]

MFJ Cub QRP transceiver kit - Building the MFJ Cub QRP transceiver kit for 20 meters band by G4ILO
[ Hits: 835 | Votes: 0 | Rating: 0 ]
Portable PSK - Integrated PSK station for 80 & 20 meters without using a PC Pictures and diagrams by N2APB
[ Hits: 579 | 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: 978 | Votes: 1 | Rating: 10 ]

Oak Hills Research QRP 20/40 Transciever - QRP CW transceiver Kit for 20 or 40 meter band, by OKA Hills Research, assembly history and description
[ Hits: 394 | Votes: 1 | Rating: 6 ]
DSB/CW QRP rig for 20 and 40 mt. - An experimental DSB/CW QRP rig for 20 and 40 meter bands
[ Hits: 1405 | Votes: 1 | Rating: 10 ]
QRP AM CW transmitter ^updated - A simple low-power broadcast-type circuit, using a crystal oscillator integrated circuit and an a collector modulated AM oscillator
[ Hits: 1098 | Votes: 3 | Rating: 6 ]
40 meters QRP CW RTX - This is the schematic of asolid-state 7 MHz QRP CW transmitter by VU2NAN
[ Hits: 1086 | Votes: 2 | Rating: 8 ]
20m CW QRP Transceiver - A pocket sized CW transceiver for 20 and 30 meters band
[ Hits: 1440 | Votes: 1 | Rating: 10 ]
2N2/20 CW Transceiver - 2N2/20 - A 20 Meter, Discrete Component CW Transceiver Built Manhattan-style
[ Hits: 365 | Votes: 0 | Rating: 0 ]