jopix user manual

Small loop antenna for 15 and 20 meters - A Small Transmitting Loop Antenna for 14MHz and 21MHz. This is an antenna you might consider if you have limited space by Lloyd Butler VK5BR

Simple HF Baluns for 50/75 ohm coax - Show diagrams, winding methods and tables of some 1:1 and 4:1 baluns for 1.8 - 30 MHz suitable for use up to 200W (400W peak) on systems using 50 or 75 ohm coaxial cable input where SWR should not exceed 1.6:1.

VHF Antenna in a Lunchbox - The magnetic loop on two metres

Vipormutant antenna by ON6MU - A Versatile Innovative Portable Multi-band Tunable Antenna can work HF VHF and UHF ideal as portable or balcony antenna

Single Coil Z Match - The simple Z match tuner simplified, article by Lloyd Butler VK5BR

WJ5O - 10 meter 2 Watt beacon Troy, AL

KB3BRT CVSARC - The Cowanesque Valley School Amateur Radio Club formed in November of 1994 at the Westfield Area Elementary School in Westfield, PA.

D-Star presentation and sounds - A powerpoint presentation of the D-STAR operating mode by K7VE includes d-star sound samples

YouTube - W7NWH's D-STAR Videos - Videos by W7NWH including D-STAR system demos

IV3YER YouTube channel - Amateur radio dedicated channell in youtube

D-StarUsers.org - D-star amateur radio systems, your source for d-star digital amateur radio. D-Stars users website

Utah D-STAR Users - Utah D-Star Users Discussion Group

D-STAR Callsign Calculator - This is a user-friendly web page based D-STAR call sign calculator that requires no installation or configuration to use.

Yaesu VX-2R technical supplement - The Yaesu VX-2R technical supplement manual delivered by radioamateur.eu in a 44 page pdf file

Yaesu VX-2R Manual - Operating Manual for Yaesu VX-2R pdf file size is 1417 KB

South Australia Scanner & Radio Users Forum - The Discussion Forum for Scanner and Radio users in south Australia.

D&L Antenna Supply - World radio users and general public you will find Radio equipment/Accessories/unique high tech items at this site including items for emergency preparedness.

FilterCAD - A free computer aided design program to help users without special expertise in filter design to create filters using Linear Technology's monolithic filter ICs. With FilterCAD, you can design lowpass, highpass, bandpass and notch filters

Tutorial on ferrite balun cores - Toroid cores, ferrite rods a good electrical tutorial on baluns

Interactive Digital Filter Design - This is an interactive filter design package, for designing digital filters

LC Filter Design - This is an interactive design package for designing analogue (i.e. hardware) filters made of inductors and capacitors (Ls and Cs).

The Ladder Filter - Article by Lloyd Butler VK5BR

Economical keyer - Using the PicoKeyer chip. Features a 60 character memory, setup & message entry using a paddle and no battery is required to retain the memory.

A single board no tuning 23 cm transverter - This transverter uses bandpass filtering with printed hair-pin filters. By KK7B

Tube Reference - Electronic Vacuum Tube Reference Manual & Specifications from the RCA Receiving Tube Manual.