websdr app

PY6CJ 80/40 meters dipole - A center feed trapped dipole for 80 and 40 meter band in spanish

NVI 40 Meter Antenna Modeling - The idea of using a low mount dipole, enhanced with reflector wires directly beneath the dipole, on the ground, appears to be a very good approach to creating an NVI specific antenna for local HF operation.

Transmission Line Calculator - This web page allows you to perform transmission line calculations by using an applet instead of a Smith chart

802.11 2.4Ghz Low-Power Vertical Antenna - A 2.4Ghz low-power 5dBi vertical collinear antenna for 802.11 applications

The versatile end-fed wire - Benefits and limitations of an end feed antennas. By Peter Parker VK3YE - first appeared in Amateur Radio, June 1998

Chokes Explained - A "choke" is the common name given to an inductor that is used as a power supply filter element. They are typically gapped iron core units, similar in appearance to a small transformer, but with only two leads exiting the housing

Hula Hoop Loop antenna - The concept of the "Hula Loop" came after many years of building medium wave loops of varying size, shape and performance. Usually these loops are constructed on a square wooden frame, with wire being wrapped around the periphery

EU PSK DX Contest 2010 - The European PSK Club has the honour to invite radio amateurs from all over the world to participate in the EU PSK DX Contest 2010. 22-23 May 2010 BPSK63 only

Monde - pmr446 - Monde - pmr446 resource site for PMR446 users

Young Ladies Radio League - Organized in 1939, YLRL (Young Ladies Radio League) is a nonprofit organization of women Amateur Radio Licensees. With a membership of approximately 800, it is international in scope with about 100 of those members who are DX YLs.

Mackenzie Highway Network - The Mackenzie Regional ARC currently Operates the VE6PRR (146.82- ) repeater. It's located approximately 15 Km North of Peace River. It is linked to the SARA system via Grande Prairie. We are currently in the process of expanding the coverage by adding number of repeater sites through out the area.

The Langley Amateur Radio Club - The Langley Amateur Radio Club has been in existence since 1988 and received it's charter in 1989. It has a membership of approximately 20 active amateurs.

The Toronto Marine Ham Radio Club - Whilst Amateur Radio has a great history of invention and service to both business and the general public as a whole, this website is dedicated to the sailing fraternity with the primary objective of providing information and training facility as it applies to “Safety at Sea through Wireless Communication”.

Alfiniti Aluminium products - Custom assemblies, complex products, versatile applications… no matter what your challenge, we can design a solution for it.

Haverford Squid Poles - Haverford stocks a large range of multi-purpose telescopic poles. They are high quality fibreglass construction with approximate wall thickness of 1.1mm

Cleveflex - Clevaflex is a manufacturer of flexible wound tubing that can be used in a variety of applications. our unique manufacturing process allows tubes to be designed and built with a multi-ply convoluted wall contour that creates a permanently bonded tube.

Motorcycle Special Events Team - MSET is a collection of motorcyclist and motorcycle enthusiasts volunteering their time and talents supporting community events, utilizing the unique mobility of motorcycles when appropriate

RF Circuit design basics - Ebook by Akira Matsuzawa Tokyo Institute of Technology, Building blocks in RF system and basic performances, Device characteristics in RF application , Low noise amplifier design, Mixer design and Oscillator design

PlanePlotter - PlanePlotter receives and decodes live digital position reports from aircraft and plots them on a chart. Using PlanePlotter, you can see a radar-like display of all those aircraft around you that are transmitting the appropriate digital messages including ACARS, ADS-B and HFDL.

RYLogit - Freeware general purpose and contesting logging application, Scoring function for the IBM QSO Party with unique export format. Cabrillo export for non IBM contests includes formatting for NA QP, CQ WW DX, NA Sprint & CQ World-Wide WPX by W0RY

The KB6IBB Utilities - Ham radio frequency list consolidation software. The Ham Radio database can house a unlimited number of records. Holding frequency information from DC to Daylight. The Radio Scanner Database is designed to emulate a radio scanner. A 5,000 record table is provided and is organized by channel number.

KE7ATE - VR-5000 Signal Capture and Analysis Software - Give your VR-5000 a new face. Controls your VR-5000, Log stations, Manage frequency lists, Record Audio and more. This program utilizes a more visual approach to simplify your radio listening.

Gpredict - Gpredict is a real-time satellite tracking and orbit prediction application. It can track an unlimited number of satellites and display their position and other data in lists, tables, maps, and polar plots.

Safe,effective grounding - Practical applications for end-fed antenna transformers and safe, effective grounding

Small Unregulated Power Supply Project - Here's a simple power supply that can be used in many applications. It is not regulated , so keep that in mind for voltage sensitive devices , and of course you will need to understand how to select the correct amperage and voltage for the AC transformer.