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ic8cqf member to puparu radio club

Based in Williamsport PA

SV2BXC Personal Amateur radio Web Page

Ham radio club in Bryan Texas

Contest Club Ontario (CCO) is Ontario's entry into International Club competitions in the 21st Century, providing one vehicle to highlight Canadian participation in these contests.

EU-EW HAM radio regions map by ew2eo

The contest takes place the first full weekend of May (from 1800Z on Saturday May 5 to 0400Z Sunday May 6, and from 1100Z to 2100Z Sunday May 6). A total of 20 hours contesting!

This resource indicates that the specific page detailing the RockMite QRPp Rig CW transceiver project, previously hosted by WY3A on QSL.net, is currently inaccessible. The QSL.net platform, which provides free web hosting services to over 30,000 amateur radio operators and organizations, confirms the file or page no longer exists. Users are advised to attempt direct contact with the website owner or utilize an internet search to locate the content. The platform's error message clarifies that QSL.net support cannot assist in finding individual missing pages due to the decentralized maintenance of its numerous hosted sites. It encourages reporting any missing files related to the QSL.net main site itself. Donations are encouraged to support the free email and web services provided to the amateur radio community.

The equipment shown on this page comprises a basic G3WDG transmit and receive system with the addition of a 1W Qualcomm amplifier.

Ham radio in Steyr Austria

The QSL Managers Society is a platform where quality QSL managers come together to pool their resources and offer their services to DX and DXpeditions seeking a reliable QSL manager. Membership requirements include a commitment to the 'QSL Manager's Creed'. If you are a QSL manager or aspiring to become one, you can join the society by agreeing to the creed. The society is based in Tuckerton, NJ, USA, and aims to connect QSL managers with those in need of their services in the amateur radio community.

This calculator ask as input diameter, lenght turn and frequencu and will return L and Q

LA3ZA Unofficial Guide to Elecraft K2 Modifications

The I2YSB DXpedition Team presents a collection of videos documenting their past DXpedition activities. These visual records offer insights into the operational aspects, equipment deployed, and environmental conditions encountered during various DXpedition events. The resource also contains a specific announcement regarding the cancellation of the planned Ghana AF-084 DXpedition, originally scheduled for April. It further details the refund process for sponsors who had contributed donations for the cancelled operation. The content serves as an archive of DXpedition experiences, showcasing the efforts involved in activating rare or challenging entities. It provides a historical perspective on the team's operations and logistical considerations. The site also functions as a communication channel for important updates concerning future or cancelled DXpedition plans, directly addressing the amateur radio community interested in their activities.

Turkish bulgarian contest team

New Zealand, the information has been taken from the New Zealand Call Book, published annually by NZART

Amateur radio contesting website - the motueka contest club zl1v

Homemade RF limiter project, to protect the K3 receiver front-end for high radiofrequency based on the original KD9SV project.

Tuned circuits for Progressive Receivers

Stamford Amateur Radio Association Repeater Club. Located in Stamford, Connecticut.

Sending QSL via mail, from the ARRL Club Newsletter

Some old DX QSL Cards, Stuff you cannot get any more

The Eastman Amateur Radio Club (VE4TG) operates a **VHF repeater** at 146.73 MHz and a **UHF repeater** at 444.15 MHz, both located at the Manitoba Hydro gas-fired generating station near Selkirk. These repeaters are situated on the power plant roof, leveraging its infrastructure for antenna placement. The club's primary objective is to offer a reliable local repeater site for members in the East Selkirk and Lockport areas, ensuring consistent amateur radio access. Beyond routine communication, the club maintains a standby communications link to assist local municipal authorities during emergencies requiring communications support. The unique repeater site location at a generating station provides a robust backup power supply, enhancing reliability. The club also organizes activities such as a weekly net and participates in WARC Field Day, fostering community engagement and operational readiness.

This generator requires 100volts supply at 5mA. A 0 -5 mA meter inserted at J1 measures the crystal current.

The P4 Aruba Callbook, last updated in 2010, serves as a directory for amateur radio operators active from the Caribbean island of Aruba. It meticulously categorizes P4 callsigns into several types: **P41-** for special resident calls valid for one month, **P43-** for permanent resident calls renewable annually, **P49-** for permanent visitor calls also renewable annually, and **P40-** for temporary visitor calls valid for one month, often used in contests. The resource notes that obtaining a permanent visitor callsign requires passing a local examination. The callbook lists numerous specific callsigns, including their QSL routes, operator names, and sometimes addresses or activation dates. For instance, P41A routes via P43A, and P40HQ was used by P43ARC via I2MQP for IARU contests. The entries include both active and Silent Key (SK) operators, with dates of passing where known, such as P43ADA (SK, Sep 2014) and P43JB (SK Jan 2012). This detailed listing assists DXers and contesters in verifying contacts and ensuring proper QSLing for Aruba operations.

Selecting capacitors in RF power applications at HF by I0JX

The CNCG is a group of contesters and DXers from Oregon and Washington who travel to various locales to participate in amateur contests

Alpha 87a Communication can be used either stand alone to control the Alpha 87a amplifier or together with several CAT-Control programs by HB9ZS

Ellensburg, Kittitas County, Washington, USA

Constructing a basic multimeter involves integrating a 0-1mA meter movement with various shunts and multipliers, selected via a switch, to create a versatile instrument capable of measuring DC volts, current, and resistance. The design outlines two main units: a primary unit handling six DC current ranges up to 1 amp and eight DC voltage ranges up to 1000 volts, alongside an internal battery for an ohms range up to 200,000 ohms. This approach allows for a practical, hands-on understanding of meter operation. An add-on unit further extends the multimeter's capabilities, incorporating a meter rectifier and switched series resistors to provide four AC voltage ranges up to 100 volts. Additional shunt and series resistors, designated Ra and Rb, are included to expand the instrument's range to 10A and 5kV, demonstrating how modular design can enhance functionality. When this add-on is in use, the main instrument is set to measure 1mA FSD, connecting via specific lugs. Component selection emphasizes precision, with 1% tolerance high stability resistors for series elements and Eureka resistance wire for shunts. The design specifies values calculated for a meter with 60 ohms internal resistance, noting that these would require modification for different meter characteristics. Experimental adjustment of shunt values is recommended to ensure accurate readings against a calibrated reference meter, reinforcing practical calibration techniques.

Presents the personal amateur radio presence of W2CZ Efrem, offering a glimpse into their engagement with the hobby. The page serves as a digital QSL card, affirming participation in the global amateur radio community. It provides a direct connection to the operator, typical of early personal web pages in amateur radio. This resource functions as a static online identifier for the callsign holder.

The purpose of the Marconi Amateur Wireless Society is to encourage experimentation in all aspects of amateur radio in a spirit of friendship and goodwill.

The Tri-City ARC was formed by amateurs in the New London, Norwich and Westerly areas (hence Tri-City) desirous of forming an association of local amateurs with the purpose of furthering better cooperation among amateurs

member of the South Texas Balloon Launch Team

Article on 50 Mhz Yagi Antennas stacking by OH1ZAA/NN0Y

Site dedicated to 6 meter and VHF

A transmitter project for the 136 kHz band by IK2PII

A small rig that you can take hiking and on business trips.

An SDR project, MDSR modulator-demodulator software radio, made using an inexpensive converter and a pc. MDSR has a transceiver and a receiver converters.

The DXCC World Map web application is a modern and interactive mapping tool designed for shortwave radio enthusiasts. It showcases a high-quality world map along with the Sun's position, sunrise and sunset times, the terminator, coordinates, QTH locator, azimuth, azimuth map, current DXCC list, Aurora, and WWV Geophysical Alert Messages. Additionally, it provides the SFI, X-Ray, Kp, and Ap indices.

Summits on the Air South Africa formed in October 2002 to draw up an Association Reference Manual and compile a list of South African summits that can be activated or contacted for SOTA awards

Sort of similar to the one of the 6m omni. Instead of using twin-lead, this design makes use of a more or less regular double bazooka antenna (coaxial dipole). Your attention shall be drawn to the available standart literature, such as Rothammel. In order to "compute" the dimension, Karl Rothammel mentioned that the total length of the dipole shall be 95% of the free-space wavelength. The short-circuit bridges (closing the folded dipole) are to be placed at a distance-fraction being equal to the velocity factor of the coax cable used, which will be 66% using RG-58 or RG174.

Effect of radials on the efficiency of antennas.

The elgin amateur radio society Illinois

Developing operational amateur radio equipment for the 134 GHz band presents significant technical challenges, particularly in frequency generation and stability. This resource details the construction of a 134 GHz system, outlining its architecture with separate transmit (Tx) and receive (Rx) modules, each employing a local oscillator (LO) and RF head units. The system utilizes a dual Flann 50 GHz lens-type horn antenna configuration for optimal signal coupling. The transmit path incorporates an LMX2541 synthesizer chip operating at approximately 2.8 GHz, referenced by a 10 MHz double-oven Morion OCXO for exceptional stability. This signal is multiplied through a series of stages (X4, then X2) to generate a 22.4 GHz signal, which subsequently drives a dual series diode multiplier to produce the final X6 signal for 134 GHz operation. The receive side features an anti-parallel diode mixer coupled to a 144 MHz transceiver via a preamplifier, ensuring effective downconversion. Operational mode is CW, achieved by keying a multiplier stage. The project includes images of the Tx and Rx head units and describes a successful 3.5 km test with G8ACE, demonstrating stable signal tones due to PLLs locked to OCXOs at both ends, confirming the system's robust performance.

HAM radio amateur pages, Jirka from Praha, Czech Republic

Summits on the air, sota. an exciting new award scheme for radio amateurs. the scheme encourages lightweight portable ham radio operating in mountainous and wilderness areas areas.

Warszawa 2000 Award, Mazowsze (Mazovia) Award, Vistula) River Award, All Baltic Islands Award, Maritime Mobile award, Baltic Sea lighthouses award