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20m Projekten - CW Zendontvangers

Klik voor vergroting1"Minimal 1", QRPp transmitter for 20m CW by OH1TV
I like to design and build minimal electronics. QRP and specially QRPp can be really minimalistic. It is often easier to make complex solutions than simple one's. In minimalistic design the product is improved by taking parts out.

Klik voor vergroting14Mhz CW Transceiver (250 mW) by JO1ACW
I have modified 14Mhz Direct Conversion type CW transceiver to be single superheterodyne type. It was very short time using DC type, I had only 5 QSO with DC type.

Klik voor vergroting20m QRP CW 5W TRX by LY3H
I made already quite a few QSOs with the this transceiver, even with some JA stations.

A CW QRP Tranceiver for 20m band by IK3OIL
The little QRP presented in this article may be built in a gradual manner, in fact it is divided in two main modules (plus VFO), you may also complete only a single part (RX or TX module).

Klik voor vergrotingAN7205 14Mhz TRX by LY3LP

Klik voor vergrotingFull duplex (almost) 20m CW QRP transceiver 5W by LY3LP

Klik voor vergrotingGnat 20m by LY3LP

Klik voor vergrotingHomebrew 20m CW Transceiver by 7N3WVM
Homebrew 20m CW Transceiver.

klik voor vergrotingMijn Eerste QRP Rig "De Barefooter" door PA2OHH
Toen ik dit ontwerp vond, geloofde ik niet dat het mogelijk zou zijn om er QSO's mee te maken, omdat zijn eenvoud zo'n groot contrast was met de gebruikelijke amateur transceivers met hoog vermogen, superheterodyne ontvanger en andere complexe schakelingen.

Klik voor vergrotingMultiPig 20 Transceiver by W8PIG
The multiPIG is an Electronic Instrument that functions as an all band QRP Transceiver, a Signal Generator and a Frequency Counter.

Klik voor vergrotingThe Multi-Pig Phased-Lock Loop Frequency Synthesizer by AA3SJ
The PLL is part of a larger project, the MP20 (multi-PIG) designed by Dieter Gentzow, W8DIZ. Details and construction lessons can be found at the MultiPIG web page.

Klik voor vergrotingPocket sized 20m (30m) CW QRP transceiver by S56AL
I started to discover the 30m band by using an adapted version of my 80m single-board CW transceiver. The first impressions were quite encouraging, so I decided to build a portable transceiver for this interesting band.

Klik voor vergrotingQRP 14 MHz Transceiver of YU2TT by IZ3AYQ
YU2TT, Vojijslav, sent me the schemas of his transceiver, ad i am happy to publish his work. So, every one with some experience in electronics can build his own transceiver ! In same ways it is inspired by the Toucan of F6BQU, but it has its own changes.

Klik voor vergrotingRadio Ozon - Miniature 20m CW station by GØUPL
This project aims to build a complete miniature 20m handheld tranceiver into an Ozon mint tin. These mints are available at many newsagents here in the UK. The target is a complete station in a box, not just a transceiver.

Klik voor vergrotingThe Wuther - 20m CW QRPp Transceiver by SP5DDJ
Just by the end of the year 2002 new QRP rig became alive. I called it "The Wuther". The concept of my smallest rig was taken from experience and some ideas presented in the Web by my distinguished colleagues - Wayne N6KR, David W0CH, Wayne NB6M and many others.

Klik voor vergrotingUn transceiver 14 Mhz simple by F6FEO
En juillet 2004, surfant sur le net, je découvrais un étrange montage de transceiver.
Appareil ultra-simple, décrit par un OM Indien Ashhar Farham, il s'agissait du BITX 20.

Creatie datum : 12/08/2007 @ 20:31
Laatste wijziging : 08/03/2019 @ 17:36
Categorie : 20m Projekten
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