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A 1:1 current balun that offeres a almost flat swr curve from 1 to 30 MHz -
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The Icom IC-7300 is a popular HF transceiver among amateur radio operators, known for its advanced features and performance. This modification guide focuses on enabling extended transmission capabilities, specifically for MARS and CAP frequencies. The instructions are based on the work of PA2DB and include detailed steps for removing specific diodes to unlock additional frequency ranges. Before proceeding with the modification, users are advised to take necessary precautions, such as ensuring the radio is powered off and using ESD protection. The guide emphasizes the importance of using appropriate soldering techniques and tools to avoid damaging sensitive components. A video demonstration is also provided to assist users visually in performing the mod. While this modification can enhance the functionality of the IC-7300, it is crucial to note that it may void the warranty and should be undertaken at the operator's own risk. The guide serves as a valuable resource for those looking to expand their operating capabilities with this versatile transceiver. -
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Setting up a Raspberry Pi as a SDR Server with RTL-2832U USB dongle -
A multiband quarter wave vertical antenna that works on 5 bands. -
Antenna experiment - Delta Loop for 7 Mhz band by AG1LE -
A site for Amateur Radio beginners and enthusiasts in Malaysia -
G0KYA's Amateur Radio Blog, make a 2m Slim Jim antenna out of 300 Ohm ribbon cable. -
A 10 meters band Slim Jim antenna project, made with a 450 Ohm slotted ribbon cable and secured on a 8 m fishing pole, by Steve G0KYA -
Here you will find any useful downloads for IC-7000. Manuals, video clips, reviews, brochures -
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A club project experiment about a vertical Moxon antenna for 20 meter band -
Presents the design and performance of a 4-element wire Yagi antenna for the 40-meter band, building upon VE3VN's earlier 3-element switchable wire Yagi. The resource details the antenna's evolution, highlighting the transition from a 3-element to a 4-element configuration and the resulting improvements in gain and front-to-back ratio. It provides specific insights into the antenna's construction and expected operational characteristics. VE3VN shares insights from field results, noting the antenna's performance on 40 meters. The discussion includes the antenna's pattern and matching characteristics, crucial for any DXer or contester looking to optimize their signal on this popular HF band. The author's experience with the previous 3-element design informs the enhancements made to this 4-element iteration. The article includes a visual representation of the antenna's current view, offering a practical perspective on its physical layout. It serves as a valuable reference for hams considering a directional wire antenna for 7 MHz operations, demonstrating a practical approach to achieving enhanced directivity and gain. -
Arduino uno universal VFO/BFO with Si5351 and TFT touch screen for BITX like txcvr -
An home made SWR meter for 2.4 GHz. A DIY SWR meter that allow precise measurements and calibration of any WiFi antenna. This is test equipment everyone who build wifi antennas should have in their shack. Article is in french and include some videos. -
Description of the 80m antenna used at CN2WW in the ARRL-DX CW 2007 -
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An end-fed halfwave antenna for 20 meters band with balun pictures and description by PD7MAA -
How to build the Quickie Pneumatic Antenna Launcher -
A balun is a MUST for dipoles or similar antennas when they are feed with coaxial cables. Many hams connect the center conductor of the coaxial cable to one side of the dipole, and the shield to the other. Wrong! -
The circuit is based on two AD8307 log amplifiers, which are connected to the forward and reflected ports on a directional coupler -
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DIY kits a 70W SSB linear Power Amplifier for YAESU FT-817 KX3 running HF 80m-10m bands -
Building a cavity resonator for 144 MHz -
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Homebrew G5RV a simple multiband antenna. This article shows detailed pictures of a G5RV home made antenna, including antenna size and dimensions by 9M2ZAK -
HF power amplifier project powered by GU-78B by SV8JE -
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A UHF antenna for satellite reception. Anntenna mast is in wood, made with two aluminium rods -
Causes and advices on malfunctioning display in the control head of the FT-857, where several scan lines in the dot-matrix display cease to function, so the display seems streaked at places -
The HB9CV is a well known two element antenna of a directional beam type with a forward gain of 4 to 5 dBd. This one is for two metres but it can be scaled, from the dimensions in the diagram, for other bands I have also made them for four and six metres -
HB9DNU Karlheinz's blog, hosted on Blogger, presents a collection of personal reflections and observations, predominantly in German. The content spans various non-amateur radio subjects, including Swiss political initiatives, economic discussions concerning banks like UBS, and social commentary. For instance, an entry from February 2008 details the Swiss vote on a combat jet noise initiative, highlighting the debate between tourism concerns and national security. Another post from October 2008 critiques the 500 billion Euro bailout package for banks, calculating its per-capita cost for German citizens and referencing earlier blog entries from March 2006 and June 2007 that discussed UBS salaries and Raiffeisenbank issues. These entries often reflect Karlheinz's personal perspective on current events. The blog also includes lighter, more personal notes, such as a February 2009 entry about a video produced by his grandson, and observations on local events like a bird exhibition in Contone or a scenic train ride through the Centovalli, demonstrating a broad range of interests beyond the ham radio hobby. -
ST2NH blog - first ham blog from africa fatures QRP,Homebrew,news,links -
Building an Open Source Arduino APRS Tracker with LCD & GPS ( SVTrackR ) -
A podcast devoted to long-distance radio reception on the AM broadcast band. AM, or Medium Wave (MW), signals can travel thousands of miles. -
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This max size magnetic loop antenna for 14 MHz with a totall circumference of 6m is designed to attach to a wall -
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Antenna experiment a Delta loop antenna for 7 Mhz band -
A homebrew Magmount for 2m antenna -
Multi-band loft-mounted dipoles for 40, 20, 17, 15, and 10m -
The YB7ZGP Pamaton Repeater operates on a frequency of 146.76 MHz, serving the Martapura District in Banjar, South Kalimantan, Indonesia. This VHF repeater provides local communication infrastructure for amateur radio operators in the region. The repeater's operation is managed by Syah Riyan, indicating a local amateur radio enthusiast or group maintains the station. Repeaters like YB7ZGP are critical for extending the range of VHF/UHF communications, allowing handheld and mobile transceivers to communicate over greater distances than line-of-sight. The 146.76 MHz frequency falls within the 2-meter band, a popular segment for local and regional amateur radio traffic, often utilized for emergency communications and general ragchewing. Information regarding the _Pamaton Repeater_ is presented on a blog platform, suggesting a community-driven effort to disseminate details about this local amateur radio asset. -
A blog with loggings and information relating to shortwave pirate radio in Europe. -
How resolve low power problems on Icom IC-7000 -
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A loop antenna made with common RG-213 coax and rests on a cross made of 6 mm fibreglass rods anf a 6.5- 30MHz tune -
A vertical antenna for 40 meters band by PA5MW