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Antuino is an accurate instrument that can be used in the field to measure SWR, field strength, modulation, etc. In the lab, it can be used to sweep filters, measure gain, distortion, frequency response, etc. It works upto 150 Mhz. On the third harmonic, it is usable on 435 Mhz band as well (with reduced sensitivity). -
Article cover hints and tips on ham radio or amateur radio contesting and contests -
Ham or amateur radio is a fascinating hobby for all -
The National Digital Link Cisar CisarNet Project -
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A multi sked portal offering sked spots grouped by CFO CW Practice CW Academy Development Digital FISTS Down Under FISTS Scouting LoTW/eQSL MARS NAQCC NRR Other Images POTA Ragchew Satellite SKCC TBDXC VHF/UHF -
Resource page for the ICOM IC-R75 at RadioReference -
Website of RP DX GROUP. Group was found in 1992 in Pulawy, Poland. -
The radio beacon DI2AM on museum-ship in Rostock Schmarl -
Calculate inductance online, with the cylindrical Coil Inductor Design Equations Formulas Calculator -
A further study of the spurious emissions from an FT847 on 70 MHz by G7CNF -
Solomon Islands H44G/ Temotu Islands H40T - March 2013 by DL7DF -
An article on how to measure electrical current with a digital multimeter or analogue multimeter. -
Read all the key details about Vacuum Tubes or Thermionic Valves that provided the foundations for today's electronics technology. -
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About usage of DTMF Dual Tone Multi Frequency in ham radio applications -
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Generate APRS Passcode using PHP for use in Amateur Radio APRS Applications when connecting to the APRS-IS Network -
This quick-start guide is an attempt to provide some help when coming to terms with the R20 and the manual -
A simple reading that allows to understand the basic working concepts and uses of an oscilloscope -
A basic YAGI UDA online antenna calculator, accept as input frequency, number of elements, diameter of parasitic element and boom diameter. This online calculator will generate a basic design data including each element length and spacing. -
Hummelmasten is a German tower manufacturer, provides consultation, engineering, but also assembly and full tower installation -
How test transistors and diodes with a simple digital multimeter. -
Liberia 2011 5M2TT DX Pedition Official web site -
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Ein satellit entsteht und andere amateurfunkaktivitäten... -
What are the Differences between UV5R and UV82 Series -
A CW Contest Simulator, a simulator for the weekly CWT contests sponsored by CWops, based on Arduino Nano -
Stand Alone Software Defined Radio, direct sampling receiver from 30 kHz to 1700.00MHz continuous frequency range, LAN interface for remote access -
GM4YEQ Galashiels and District Amateur Radio Society (GDARS) -
Introduction to operating on microwave bands at VKFAQ -
RadioReference page on Radio Shack Pro-97 -
Check out these vintage QSL cards from the 20th Century in this gallery of old QSL cards. -
Notes on using a modified R7100 with discrimator tap -
A cavity backed antenna is a practical slot antenna tipically used in microwave applications -
This article provides details on building a 6 Meter J-Pole antenna using PVC pipe for an enclosure. This antenna uses flat 450 ohm Window Line for the tuning stub. -
The antenna ground or earth system can be key to its operation whilst also being a key safety feature. This article is about grounding systems for antennas, covering different aspects of grounds made for antenna safety, or expressly for lightning or just to improve antenna performance, being ground an antenna component. -
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I wanted to mount an amateur radio antenna on my truck that was more permanent than the magnetic mount on I already had, but I had a few specific design requirements for the project. -
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Before the advent of satellite communication, maritime communication adhered to an international protocol requiring ships and coastal stations to observe silent periods twice an hour, reserved specifically for emergencies. These silent periods were marked by red sectors on the 500 kHz frequency and green sectors on the 2182 kHz frequency. The 4-second red bars facilitated the manual transmission of the SOLAS distress signal. -
Republic of Niger 2017 5U5R DXpedition web site 2017 Mar 9 - 2017 Mar 2 Will operate 160 to 10m, also 5.360 MHz; SSB CW RTTY; QSL via EA5RM -
A review of the dual band FT-8800R transceiver by the jeep expedition group -
The map display allows you to select by locator, or clicking on the map, where you want to calculate the probability of Sporadic-E by building a combination EPI, Es Probability Index, based on factors using many of the known parameters which can effect Es. T -
Experimental Methods in DSP design. The author explains how a software defined radio works to help other amateurs with their learning. This set of tutorials takes you from how to write a single component to a fully working SDR. -
The Davis County Amateur Radio Club (DCARC) serves as a focal point for licensed amateur radio operators in Davis County, Utah, fostering community and promoting radio communication interests. Members engage in various aspects of the hobby, including local nets, public service events, and technical discussions. The club's activities often involve supporting emergency communications preparedness and providing opportunities for skill development among its members. DCARC maintains a presence in the local ham radio scene, facilitating contacts and knowledge exchange. They frequently participate in events like _Field Day_ and offer resources for those interested in obtaining or upgrading their amateur radio licenses. The club also supports local repeaters, ensuring reliable VHF/UHF communication infrastructure for the region. Their website, dcarc.net, provides information on club meetings, upcoming events, and contact details for prospective members. -
Time Mapper UHD is a versatile mapping and time visualization program offering multi-satellite viewing with frequency display and unique country-pairs for PskReporter data. It features live feeds from logging programs and can plot ADIF files. Ideal for schools, offices, or amateur radio stations, it provides customizable 4K or HD world clock displays with over 60 map layers, including ham radio zones and natural features. The program supports various time functions and can import logs for detailed analysis. It runs on Windows 10 or 11 and offers a 30-day free trial. -
An article by MicroHam on using the Icom PW-1 RF Power Amplifier safely and with non-Icom transceivers.
