Electronics Infoline Web

4W HF QRP Linear Amplifier

This is a rather unusual QRP Power Amplifier design, with a wide frequency response; within three dB's from 300KHz to 30MHz. Overall gain is in the region of 16dB

http://web.telia.com/~u85920178/tx/linear.htm

5.76 GHz Up converter

http://www.mrs.bt.co.uk/dubus/9001-3.pdf

50 MHz Receiver based on MC3372

The receiving frequency can be set with a LC tank or with a crystal.

http://hem.passagen.se/communication/receiv.html

50 MHz Transverter

http://www.mrs.bt.co.uk/dubus/9001-1.pdf

501c ARobot

by Roger Arrick.

http://www.robotics.com/arobot/501c.html

50MHz 2w QRP SSB Rig

http://www.intio.or.jp/jf10zl/50M2W.htm

50MHz linear AMP

This machine has about 12dB gain. And, maximum power is 3 watts

http://www.intio.or.jp/jf10zl/50Mlinear.htm

50MHz PSN-TRX

using phase shift network

http://www.intio.or.jp/jf10zl/50MPSN.htm

51J-4 Receiver

WA3KEY presents everything you need to know about the Collins 51J4.

http://www.wa3key.com/51j4.html

5301 wideband fuel mixture display

http://www.techedge.com.au/vehicle/wbo2/5301.htm