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An RF Probe project by N5ESE

DTMF Remote Controls, DTMF tone generators and broadcasting products, remote broadcasting via cell phone, cell phone mixer and remote phone keypad

Icom IC 756 Pro 3 English User Manual in a PDF file

The Broadcast Employees Amateur Radio Society, Inc. (BEARS) operates an extensive network of **VHF and UHF repeaters** across New York, the Hudson Valley, Long Island, and New Jersey, accessible to all licensed amateur radio operators. This resource details the club's structure as a 501c3 tax-exempt non-profit, emphasizing its role in providing ham radio training, testing, and critical communications support to various public and private emergency response agencies. Key repeaters include W2ABC/RPT on 147.27 MHz with a 141.3 PL tone, serving as a central point for club activities and broader network access. BEARS is also a founding member of the **Disney Amateur Radio Interconnect (DARI)**, a consortium of open, linked VHF and UHF repeaters spanning major metropolitan areas such as Philadelphia, Baltimore/Washington DC, Orlando, Bristol, Los Angeles, and Boston. This interconnected system facilitates wide-area communication for members and supports emergency preparedness efforts across multiple regions. The club's focus extends beyond Disney employees, welcoming aspiring and current hams from outside the company to participate in its activities and utilize its robust repeater infrastructure.

Central Oregon DX Club N7LE

A simple VHF quarter wave antenna from PL25

A browser based circuit simulator offering a large set of functionalities allowing to share and discuss designs

Programming software for the Yaesu FT-60(R)

Tips and advice compiled from The DX Reflector

An attempt to make a capacitor out of kitchen foil and cling film

Whats new on ham radio with digital modes? DRMDV

The workaday world of antenna & tower projects. Posted by K4ZA, Tower Works, Charlotte NC.

This low pass filter terminates all harmonics from the 2nd to above the 10th harmonic in a better than 15 db return loss load

We encourage ham radio operators to try something new with the hobby.

DesignSpark PCB is the world's most accessible electronics design software, specially designed for Rapid Prototyping and turning your circuit ideas into testable boards faster. Easy to learn and easy to use, DesignSpark PCB is free and can you can download DesignSpark from this site.

Evaluates the **LDG Z100 autotuner**, a device designed to automatically match antenna impedance for optimal transmission efficiency. The review discusses its performance in comparison to the MFJ-902, noting that while the Z100 is a reliable autotuner, it does not match the range of impedances that the MFJ-902 can handle. The Z100 is suitable for operators seeking a 100-watt autotuner that covers HF bands, providing a practical solution for those who require automatic tuning without manual adjustments. The review highlights the Z100's operational context, focusing on its use in HF bands and its practical application in amateur radio setups. While it offers a straightforward tuning process, the Z100's limitations in impedance matching are noted, making it less versatile than some competitors. This comparison provides valuable insights for operators considering an upgrade or replacement for their current autotuner. The Z100's performance is positioned within the broader market of autotuners, offering a clear perspective on its strengths and weaknesses in real-world amateur radio operations.

Information about setting up a Solar Powered Ham Radio Station.

Experimental Software for the Yaesu VR-120 and Yaesu VR-120D Receivers

A 144MHz FM class C RF Power Amplifier based on a 2N6084 RF transistor, that can produce 50w output max

Por una Radioaficion unida y solidaria . Uruguay

Schematic for a 1200/300 baud modem for baycom compatible software

Yaesu VX-8DR/DE received APRS beacons map based on Google Maps. The application parses Chirp's .img files and shows the QTH of the incoming APRS messages.

Replacing filters on ICOM IC 775

Ham Radio fonts that have the slash zero also morse code fonts

SWR or VSWR - the most widely known yet most misunderstood terms in Amateur Radio. Article by GW6ITJ

Simple steps you can take to solve most problems caused by station equipment

A youtube video instructions on how to replace, the Select knob. Very often this know wobbles after some years of usage and in this video is well documented all passages needed to replace the knob.

Describes Atlantic Tower Services (ATS), a company specializing in antenna tower erection and maintenance, operating from Orlando, Florida. ATS offers a range of services including site maintenance, structural repairs, system modifications, and complete tower installations for various communication needs. The company emphasizes its capability to handle diverse tower projects, from routine inspections to complex upgrades, ensuring structural integrity and optimal performance for amateur radio and commercial installations. ATS focuses on delivering reliable infrastructure solutions, supporting the backbone of communication systems. Their service portfolio covers critical aspects of tower ownership, addressing both preventative care and reactive solutions for existing structures. They are equipped to manage projects involving different tower types and heights, adhering to safety standards and operational best practices. Services include **site maintenance** and _structural modifications_.

North Texas QRP Club

Southern Michigan Amateur Radio Society Battle Creek,Michigan

radio groups and packet radio

This is a neat little adapter that allows the use of a cell phone type Headset with your Amateur Radio.

Homemade LC Bandpass Filters for 20M, 30M, 40M In multi-station environments like special events, field day, portable operating, is very important to protect receivers from excessively strong signals. Bandpass filters help to protect your transceivers.

Windows shareware Log program for the IARU HF Contest

A Picaxe Morse Code keyer project with source code and links to useful resources by K6ACJ

Manufacture remote control interfaces to manage several kind of ham radio transceivers, Antenna rotators and antenna switches. Control can be done using smartphone Apps or from Computers.

A stepper switch controller made with arduino by N3OX

An interesting article about low band receive antenna for Urban QTHs

A very informative review of the Icom IC-7300 direct RF sampling transceiver, including audio samples, recordings and a comparison vs the Elecraft KX3

TenTec 1300-Series QRP CW Transceiver Kits

Used electronic test and measurement equipment

Kenwood Portable SSTV device

How to home made antenna traps with material you can easily find, and how to properly tune it.

A free website for the amateur radio community. Being a member gives you full access to the features and benefits of this forum.

Understanding and using antenna radiation patterns

Serving The Interests Of Amateur Radio For Over 70 Years

A page describing all element of a weather statio for NOAA weather satellite image reception

Manufacturer of professional antenna and filter systems for communications and broadcasting, serving commercial and governmental markets worldwide.

The problem originates by improper TXOUT-to-RF timing (RF transmission exists still after a TX-EN prohibition), combined by too long decay of their CW pulses.