N.S. Harisankar (9)

1-02-2005 | Together with a good directional antenna this high performance two-stage antenna amplifier for the VHF FM broadcast band will enable you to...

1-12-2000 | A fieldstrength meter (FSM) is extremely useful for radiation gain/loss and radiation pattern measurements, and, in general, to discover why...

1-12-2000 | Most modern handheld transceivers for 2 m and 70 cms ham radio incorporate MOSFET RF power modules and are capable of operating at supply vo...

1-07-2000 | This simple circuit helps you sniff out RF radiation leaking from your transmitter, improper joints, a broken cable or equipment with poor R...

1-12-1999 | This rugged power supply is based on the popular LM338 3-pin voltage regulator. The LM338 is capable of supplying 5 A over an output volta...

1-07-1999 | Many radio amateurs will not fail to recall the chaotic situations that may occur during fielddays or contests, when several radios have t...

1-07-1999 | This compact 13-V/2-A power supply for ham radio rigs and other VHF/UHF portable PMRs is based on the STR2012/13 voltage regulator IC from...

1-07-1996 | This circuit is based on the well known LM350T voltage regulator from National Semiconductor, and largely follow the standard application...

1-07-1996 | The monitor is a handy aid in cam and is particularlv suitable for radio amateurs who power their equipment from a car battery.