cw keyer

Build a K9AY Receive Antenna - This article is how a K9AY switch-able receive antenna was built by Darren Hatcher, G0WCW. It also goes a step further telling you really how to do it, rather than suggesting what to do.

Low-Band Receive Antennas - 98 Pages PPT presentation file on low band receiving antenns by Al Penney VO1NO / VE3

Cushcraft R5 Matching Unit Rebuild - This article describes how to rebuild a matching unit of a Cushcraft R5 vertical by G0WCW

Duoband DK7ZB-Yagis 2m and 70cm - These Yagis cover the range of 144-146MHz on 2m and 430-440MHz on 70cm. They can be used for alle modes (FM and SSB/CW). On both bands the SWR is good across the whole band.

Contest Software Reviewed - G3CWI contest software reviews, compare NA SD TR CT and WriteLog

AATest - A special edition of AALog, optimized for the use in a lot of different contests. It can export file in Cabrillo, .SUM and .ALL files, ADIF. To use this program in CW and digital modes you need to use CwType and TrueTTY.

PA1CW - Personal page of the Dutch Amateur Radio Station PA1CW

GHD CW KEys - Japanese manufacturer of CW keys and paddles

Essex CW Amateur Radio Club - Essex CW Amateur Radio Club

Dynamic range measurements - Comparison of FT-1000D FT-736R FT-817 FT-847 FT-897 IC-765 Orion TS-2000 Spectral purity of a continous carrier, of a SSB and CW signals

GridLocW - GridLocW a Lat/Long to Maidenhead converter for Windows with optional GPS support

CwType - The terminal program for CW-operators. You can transmit both from the keyboard and from a paddle connected to game or LPT ports. You can also operate in paddle iambic mode. Control of the transceiver (PTT and CW keying) is made through one of the COM or LPT ports. CwType can integrate with AALog software

Shortwave Listeners Log System Priority listing - Free logging software for the Shortwave Listener. No database nonsense. Just your logs accurately tracked. saved and archived.

10 11 meters RF Power Amplifier - AM/FM/CW QRP RF Power Amplifier for the HF 10 or 11 meterband (28MHz/27MHz)

Passive CW headphone filter  ^updated - This filter is a plug in adapter that has no batteries but gives very good performance by G8MNY

A PIC16F84 based CW Decoder - CW decoder project that automatically adapts itself to the CW rate and may be employed for learning purpose substituting the traditional tone generator and offering the capability of displaying the keyed code.

A simple iambic keyer - Iambic keyer with simple paddles and simple electronic circuit.

40 meter QRP CW transceiver - Home made QRP CW transceiver for 7 MHz by JF10ZL

XBM80-2 An Experimental 80m CW Transceiver - This is an experimental CW transceiver for 80m, although the same idea will work on all HF bands

Homebrew 30m CW Transceiver - 10.100 - 10.140 MHz 3 Watts output by 7n3wvm

40 QRP CW Transceiver - Amateur Radio (G3TXQ) - Malta 40 QRP CW Transceiver

The Pixie and Micro-80 - QRP HF Transceivers, Tiny, direct conversion CW transceivers using just a handful of readily available parts.

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

40 m Band Direct Conversion Receiver - Practical and usable direct conversion receiver for the 40 m CW band

Simple Interfaces for FSK, PTT & CW Keying - AA5AU FSK and CW interfaces