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How to convert the ICOM VHD base station IC-275D to 275H 100W 144-148Mhz

Signal marker for the microwave bands

Official OSCAR DELTA DX Div Italy

Oldest continually operated club in United States. Established in 1916.

Sent every Saturday, Amateur Radio Weekly is an email newsletter containing links to the most relevant news, projects, technology, and events happening in Ham Radio

Ham Blog dedicated to dxing and IOTA

Electronics components, rf connectors worldwide dealer

The American, Continental, and International Morse Codes

Ham Radio News and more by N5FXX - Lubbock, Texas

This software connects to a NanoVNA and extracts the data for display on a computer, and for saving to Touchstone files.

This DIY vertical multi-band Windom antenna offers a practical and effective solution for amateur radio enthusiasts seeking a versatile and compact antenna for HF communications. Its simplicity of construction, multi-band capability, and favorable performance make it a valuable addition to any radio shack. The article provides detailed instructions on constructing the antenna and balun, along with diagrams and component specifications. Field tests demonstrated successful contacts with stations across Europe and North America on 14, 18, and 28 MHz. The antenna exhibited comparable performance to a W3DZZ dipole and outperformed a Cobweb antenna on 18 MHz. Low noise levels were observed, effectively suppressing background noise.

About capacitors, a complete guide to capacitors types and various characteristics

Windows shareware contest log program for the CQ 160 meters contest

A guide to setup and operate on JT-9 mode, including a sample QSO and setup hints by VA3PAW

GoGreenSolar provides comprehensive solutions for **DIY solar panel systems**, catering to both homeowners and professionals seeking energy independence or reduced utility costs. Their offerings include a variety of solar kits such as Grid-Tie, Off-Grid, and Battery Backup configurations, designed to integrate seamlessly with existing utility infrastructure or provide complete autonomy in remote locations. Customers can select from Microinverter or String Inverter kits, along with essential components like **solar panels**, inverters, batteries, and racking systems, all curated from reputable brands known for efficiency and durability. The company emphasizes end-to-end support, from initial consultation and custom system design to providing easy-to-follow installation manuals. They offer financing options, including quick-approval loans with zero down payment, and a money-back guarantee if a solar permit is not approved. The platform also features a solar calculator and a questionnaire to help users determine the most suitable system for their specific energy requirements and property characteristics. GoGreenSolar aims to simplify the solar adoption process, enabling significant savings on energy bills and labor costs. Their approach focuses on empowering users to install their own systems with expert guidance, ensuring optimal performance and a secure energy future for homes and businesses.

Interesting article on how Marc Van Stralen, PA1HFO, took the Drake TR-7 Transceiver to the Next Level.

Presents the construction of a shortened _Morgain_ dual-band wire antenna for 40 and 80 meters, specifically designed for installations with limited physical space. The design achieves a compact footprint of approximately 10 x 0.5 meters, utilizing 64 meters of 1.5 mm² insulated electrical wire. The article details an alternative configuration that reduces the antenna's physical length while maintaining its electrical characteristics for dual-band operation. Author _Remo - IM0JZJ_ conducted tests from Sant'Antioco, Sardinia, reporting SWR measurements of 1.2:1 to 1.4:1 on 40 meters. On 80 meters, SWR ranged from 1.1:1 to 1.5:1 across 3620 kHz to 3720 kHz, with a 1:1 current balun recommended for coaxial feed due to the antenna's approximately 50-ohm feed-point impedance. The installation used two 11.50-meter galvanized steel poles, supporting the antenna at about 10 meters above ground. Construction involves three wooden boards and sixteen fiberglass laminate spacers, with specific instructions for routing the 32-meter wire arms. The design eliminates jumpers for 40-meter tuning but requires two jumpers approximately 1.45 meters from the ends for 80-meter operation, which are tuned and then permanently soldered.

A review about the Wouxun KG-UV8D two-way handheld VHF UHF radio transceiver

A Rig control CAT interface schematic suitable for both the Yaesu FT-817 and FT-100 transceivers.

Electronixandmore.com, home of jon's antique radios

ELENOS is the leader company for fm transmitters, amplifiers, radio broadcast equipment and custom systems.

Utah D-Star Users Discussion Group

A Tower Project at WOIVJ. A pictorial story of the erection of a 40 foot, self-supporting, fold-over tower.

50Mhz 28Mhz 13.5Mhz amateur radio propagation beacons by K6FRC

Mircules HAM QuickLog provides a mobile logging solution for amateur radio operators, supporting quick contact entry on iOS and Android platforms. It features multiple log file management, instant callsign information display including Country, ITU zone, CQ Zone, and DXCC number, and robust ADIF and CSV import/export capabilities. The application is designed for efficient logging with optional fields and default values, streamlining the process for both shack and field operations. The software includes dedicated support for POTA, SOTA, and IOTA activations through specific fields like MY_SIG_INFO, SIG_INFO, MY_SOTA_REF, IOTA, and MY_IOTA. A specialized contest mode offers real-time dupe checking and automatic TX exchange updates to enhance contest efficiency. Integration with QRZ.COM and HAMQTH.COM allows for direct operator information lookup and import, while Open Street Maps integration provides geographic context for contacts. The application also features a notes and scratchpad function for each log file.

Dutch Amateur Radio DX & Contest Group

Six Steps for Programming your IC-2100H from the front panel of radio. Using these steps you should have no trouble entering either simplex or repeater frequencies and saving them.

Assembling the Small Wonder Labs SW+40 QRP Transceiver Kit documented by K4ICY

Website dedicated to vhf radio aurora operations by KG0VL

About Amplitude-Modulation

A trap antenna dipole covering two differen bands made reusing an old 160/80m inverted vee antenna.

Descriptions, summaries,and tutorials about electronic circuits and electronic circuit design including amplifiers, attenuators, logic, transistor, operational amplifiers and much more

STAR-H Corporation specializes in extremely wideband dipoles and compact low-profile antenna systems for military, emergency management, commercial operations and consumer wireless applications.

Original User Manual for the Baofeng UV5R

Experimental Stations Run by W1TAG WD2XES has been used to study LF antenna design, propagation and communication modes. Signals from WD2XES have been copied as far away as Russia.

W4SHL amateur radio club in Shelby County

How to build a low-pass filter to remove alternator whine from your car

Details Amphenol's extensive product line, encompassing electrical, electronic, and fiber optic connectors, alongside coaxial and flat-ribbon cable solutions. The company designs, manufactures, and markets these interconnect systems globally, serving various communication network requirements. Their offerings support end-to-end connectivity, crucial for modern broadband infrastructure. Emphasizes the company's role as a major provider of components vital for reliable signal transmission in diverse applications. Products like _LMR(R) coaxial cables_ and various _RF connectors_ are essential for amateur radio installations, ensuring low loss and robust connections for antennas and transceivers. The focus on high-performance interconnects directly benefits hams constructing or upgrading their stations. Amphenol's broad portfolio includes specialized connectors and cable assemblies, meeting rigorous technical specifications for both commercial and amateur radio use.

A mailing list in spanish to exchange shortwave dx i nformations

Test and measurement instrumentation, AC & DC power supplies, power sources and analyzers, data acquisition systems and boards

Relays, controllers, power meters, fault recorders, power sensing products

Amateur radio kits dealer, online shop for ham radio transceiver kits.

Vacuum Tube Data by Duncan Amplification.

tabLog has been written to offer basic logging when /P and allows for easy import into your Shack-based log via ADIF. Best performance is with a tablet in landscape mode and using a small Bluetooth/micro-USB QWERTY keyboard – QSO entry via this method is simple, and efficient.

The Shoddytenna is a 160 meters band vertical antenna intended for portable use. This antenna takes just 15 minutes to erect on site, can be carried by hand and is ideal for local groundwave work.

6 Elements on 50 MHz / 6 metres

KA0KA ESSB with the Kenwood TS-850/DSP-100 project

This circuit stores a morse code message as bits in an EPROM chip, the message controls a relay that keys a CW morse code transmitter. An Arduino processor can also be used in place of this circuit, that eliminates the need to build the circuit and program an EPROM.