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LAPD Los Angeles Police scanner. Listen to LAPD Live feed, Cover Southwest, Harbor, 77th Street, and Southeast Stations plus South Bureau Traffic

Accessing real-time public safety and amateur radio communications often requires specialized scanning equipment or a local presence. Broadcastify addresses this by offering a web-based platform that streams live audio feeds directly to listeners, enabling remote monitoring of various radio systems. This particular page aggregates twelve distinct audio streams covering the Las Vegas-Henderson metropolitan area, providing a centralized point for monitoring local emergency services and ham radio activity. The available feeds include public safety channels for entities like Boulder City Fire, Henderson Fire Dispatch, and Nevada Highway Patrol in Clark County. Additionally, several amateur radio repeaters are streamed, such as the _DMR NX7R 449.62500_ MHz repeater, the _Dstar 449.575 W7AES_ machine, and repeaters associated with the _Sin City Repeater Group_ and _W7HEN Henderson ARC_. These amateur radio streams offer insights into local ham operations, club activities, and emergency communication drills. While the primary Las Vegas Metro Police Department feed is noted as offline due to encryption, the platform continues to provide a diverse selection of other local public safety and amateur radio transmissions. This allows enthusiasts and emergency communicators to stay informed about regional events and ham radio nets without needing a physical scanner.

Design your VHF UHF Yagi antenna online, a JavaScript enhanced web page that implements the design of an antenna for 2m and 70cm bands. This page offers a streamlined experience for Yagi antenna design enthusiasts. It assumes prior knowledge of Yagi design principles, minimizing distractions with a user-friendly interface. Equipped with essential equations, it provides instant design feedback. Red font warnings indicate design limitations, ensuring practical results. Constraints include Gain (11.8-21.6 dBd) and Boom Length (2.2-39 wavelengths), with additional frequency-dependent restrictions noted in input fields.

The W5GI Mystery Antenna is a versatile and easy to build multi-band wire antenna designed for amateur radio operations. It covers frequencies from 80 meters to 6 meters, making it suitable for a wide range of operating conditions. The antenna features a low feed point impedance, allowing for easy matching with most radios, whether or not an antenna tuner is used. Its construction is straightforward, requiring only two vertical supports approximately 130 feet apart, making it ideal for hams without towers. Users have reported excellent performance, particularly on the 20-meter band, where it outperforms similar designs like the G5RV. This antenna is unique in its design, incorporating three half waves in-phase on 20 meters, resulting in a six-lobe radiation pattern. Despite its effective performance, the antenna is challenging to model, which adds to its mystique. The W5GI Mystery Antenna has gained popularity among amateur radio enthusiasts worldwide, with many users praising its ease of construction and effectiveness. Whether you're a beginner or an experienced operator, this antenna offers a fun and rewarding project that can enhance your HF capabilities.

A simple homebrew outdoor antenna to 2.4 GHz band.

Ever wondered what goes on behind the scenes of the Chicago Police Department? Listen to Chicago police live audio feed from different district zones. Broadcastify offers a free stream of live Chicago PD radio transmissions! Stay informed about real-time incidents and hear police communication firsthand. This official feed allows you to experience the fast-paced world of Chicago law enforcement, directly from your browser. Be aware that some broadcasts may be delayed or encrypted for privacy reasons.

Monitoring local public safety and amateur radio communications often requires specialized scanning equipment, but online platforms offer a convenient alternative. This resource aggregates live audio streams from various scanner feeds throughout New York State, enabling users to listen to real-time transmissions from police, fire, EMS, and even some amateur radio operations. The platform organizes these feeds geographically, allowing for easy navigation by county or major metropolitan areas like _New York City_ or Buffalo-Niagara Falls. Users can browse through **521 audio feeds** covering **58 counties**, with a clear breakdown of feed types including Public Safety, Amateur Radio, Rail, Marine, and Aviation. Each listing provides the county, genre, and current listener count, highlighting popular feeds such as Oswego County Public Safety with 84 listeners or Essex County Police, Fire, and EMS with 82 listeners. This structured presentation facilitates quick access to specific local emergency services or other radio traffic. The service functions as a centralized hub for scanner enthusiasts and those interested in local events, offering a passive listening experience without the need for a physical scanner. It serves as a valuable tool for situational awareness during emergencies or for simply staying informed about local public safety activities.

A 2 meter (146 Mhz) J-Pole antenna that is inexpensive, and easy to build.

Use real audio streams to listen to Hf and VHF stations around the world via remote controlled receivers connected to the web.

11 most popular MIC wiring diagrams including AZDEN Alinco Icom Kenwood Yaesu Astatic Cobra Sadelta Turner microphens diagrams and pin-end views

Superfast analyzer for audio and radio signals. Examining radio signals is the original idea of Analyzer2000. Simply connect the AF-output of your receiver to the input of your soundcard and see, what you hear. Use SSB and you will have a feeling like using an expensive IF panorama adapter. Support for this version has been discontinued.

Three live police scanner streams are offered, broadcasting twenty-four hours a day from San Diego County. KE6CBF, the site's operator, provides real-time communications from agencies like the San Diego Police Department (SDPD), San Diego Fire-Rescue Department (SDFD), Sheriff, California Highway Patrol (CHP), and Air Traffic Control (ATC). Beyond the live audio, the platform includes a community forum for scanner enthusiasts. It also provides resources such as FAQs, _10-43_ information pages, and police codes to assist listeners in understanding the transmissions. The site aims for high-quality streaming audio with minimal downtime, supported by user donations. Powered by technologies like PERL, mySQL, ICECAST, APACHE, and LINUX, the site is designed for optimal viewing at **1024 x 768** resolution or higher.

The article details the construction of a basic long-wire antenna, referencing its use with a Realistic stereo receiver for AM reception and noting its availability as a RadioShack kit (catalog # 278-758) in their 2000 catalog. It emphasizes proper orientation for optimal signal reception, stating the antenna performs best at right angles to the desired signal direction and worst end-on. Specific components mentioned include bare copper wire, nylon rope, insulators, and eye-hooks, with a recommendation to solder connections for best results. Key construction advice includes securing the wire between two points, such as a house corner and a tree, while ensuring the airspace is clear of obstructions, particularly power lines. A practical tip for tree mounting involves using a pulley and a counterweight, like a brick, to maintain wire tension despite tree sway, a technique commonly employed by **Ham Radio operators**. Grounding instructions specify connecting the radio's ground terminal to a copper cold-water pipe or a dedicated copper ground rod. Safety notes are prominently featured, advising extreme caution around power lines, proper ladder usage, and ensuring the antenna is high enough to prevent accidental contact by people or pets. The document also recommends **lightning protection** measures, such as disconnecting and grounding the antenna when not in use, suggesting devices from C. Crane Company or RadioShack, or a simple knife switch for manual grounding.

An Easy Dual-Band VHF/UHF vertical Antenna made with a TV twin lead and coax cable

Able to cover all frequencies between 3.5 and about 10 MHz, the loop described here is directional, does not require a radial system, and stands just 1.8 metres tall. The antenna can be put together in a short time and is cheap by Peter Parker VK3YE ex VK1PK

Cheap Yagi Antennas for VHF/UHF

The antenna is a 10 - 160 meter horizontal loop fed with 450 ohm ladder line all the way into the ham shack to an Palstar AT1500BAL balanced line antenna tuner

Kenwood Alinco and Icom amateur radio transceivers - Mic Wiring diagrams by pictures

Build Your Own Bazooka Dipole: A VHF/UHF vertical dipole made from coax

140 feet of insulated wire, the first half of which (70 feet) is space wound on an insulated tube.

Demonstrates the construction of a **multi-band HF mobile antenna** utilizing a modified CB whip antenna base. The resource details the process of stripping a commercial CB whip, winding a new helical coil with 0.7mm insulated copper wire, and identifying tapping points for various HF bands. It emphasizes the importance of a rugged, slim design for mobile operation, discussing mechanical length, power handling (up to 200 watts), and coil diameter considerations. The article includes a graphic illustrating the antenna's operational principle, where sections of the helical coil are shorted from bottom to top to maintain efficiency and high Q. The resource presents a practical approach to achieving **band switching** without an external tuner, by manually adjusting tapping points on the coil. It provides a table with reference lengths in centimeters from the feedpoint for 7 MHz (40m) through 28.7 MHz (10m), including WARC bands. The author details mounting techniques, suggesting a Diamond bracket for secure attachment to a vehicle trunk, and stresses the critical role of proper grounding for optimal performance. The design allows for operation on 75m and 80m bands by adding a 110mm steel whip.

Audio Spectrum Analyzer for Real-time, FFT, OscilloScope, Frequency counter, voltmeter, noise and distortion meter, phase shift meter. Multi-Tone Sound Frequency Sweep Generator. White, pink noise.

A free application that controls up to 4 Alinco, Elecraft, FlexRadio, Icom, JST, Kachina, Kenwood, TenTec, or Yaesu transceivers, switching between them manually or automatically based on frequency, and displaying frequency-dependent settings for devices like tuners and amplifiers; includes a bandspread, and supports transverters, frequency and mode tracking by an independent transceiver or receiver, SDR-based panadaptors, and SO2R switching with microHam or OTRSP-compliant devices.

A modified 20 meter double zepp wire Operating Bands: 40 thru 10 meters (with tuner), basic construction and performance information.

I built a homebrew 75 meter Double Extended Zepp Antenna, And I needed a 4:1 Balun So I decided to Homebrew the Balun also. Here is how I did it!

A 10-20 meters coverage delta loop antenna. After relocating, DL2HCB designed a multiband loop antenna to cover 10-20m with an open-wire feed for impedance matching and compact installation. Inspired by the mini-X-Q design, a modified 10m delta-loop was built, enhanced with a 1/4 wave shorted stub for 28 MHz using 450-ohm ladder line. The antenna delivers east-west broadside radiation and performs as a closed loop on other bands. Operational tests yielded strong European signals and successful DX contacts, including a 20m QRP QSO with FY/DJ0PJ.

A freeware windows morse code trainer for beginners and experts by DK5CI

Antenna design program for Quads, Yagis, Inverted Vees, J-poles, Trap Dipoles and more for MS DOS.

Home made vertical antenna for 80 40 15 10 meters ARRL PDF file taken from QST June 1978

CwGet v2.55 is a software application for amateur radio operators designed to decode Morse code (CW) signals into text using a standard computer sound card, eliminating the need for specialized hardware. The program features a customizable interface with a spectrum display for visualizing signal frequencies and peaks, an oscillogram for monitoring signal presence and setting detection thresholds, and a received symbols window for displaying decoded text. Key functionalities include Automatic Frequency Control (AFC) to lock onto signals, adjustable FIR and IIR filters for noise reduction, and a burst filter to mitigate short noise impulses. It also supports automatic CW speed detection, multiple character sets, and the ability to record and replay received audio. Integration with logging software like AALog is facilitated through double-click word transfer, and transceiver frequency control is possible via the Omni-Rig interface, allowing for automatic tuning of the radio's VFO or RIT. The multi-channel decoder feature can simultaneously decode up to five strong signals within a 1600 Hz bandwidth, displayed in a separate Multi-RX Window with an adjustable squelch. CwGet also offers the capability to decode signals from pre-recorded WAVE files and can function as a narrow-band sound DSP filter for aural decoding. This is a commercial version and it has been tested on latest MS Winows versions.

Building a 2.4GHz vertical collinear omnidirectional antenna

The G5RV antenna, with an overall length of **31.10m (102ft)**, functions as a 3/2-wave on 20 meters when installed horizontally at 12m (39ft), exhibiting a resonant frequency of 14.150MHz and an approximate resistance of 80 ohms. Its 10.36m (34ft) stub line, designed as a 1/2-wave on 14.150MHz with a 0.97 velocity coefficient, acts as an impedance transformer across other bands, aiming for multiband operation without traps. On 20m and higher frequencies, the G5RV demonstrates improved gain compared to a standard dipole, attributed to the _collinear effect_ from multiple 1/2-waves along the wire. The original design sought a multiband solution for limited spaces, often requiring an Antenna Tuning Unit (ATU) for effective operation across bands like 80, 40, 30, and 20m, particularly with modern solid-state PAs. Variants, such as the F8CI modification, incorporate a 1/4 current balun at the stub line's base for symmetrical-to-asymmetrical transition, known as a _remote balun_. Proper flat-top or inverted-V installation is critical for maintaining symmetry and collinear gain, with inverted-V apex angles below 120° progressively diminishing higher-band performance.

The online interface presents a **Drake R8** communications receiver, allowing users to remotely tune frequencies, select modes, and adjust key settings via a web browser. It features a graphical representation of the receiver's front panel, including a rotatable main tuning knob, offering an interactive experience for shortwave listening. The system has been operational since 1995, providing continuous access to the receiver's capabilities. Users can listen to various shortwave broadcasts and amateur radio communications across the HF spectrum. The interface supports real-time frequency changes and mode selections, such as AM, SSB, and CW, directly impacting the physical receiver's operation. This setup enables remote exploration of radio signals without requiring personal equipment. The resource functions as a live **Web-controlled Shortwave Radio**, making the Drake R8 accessible globally. It serves as a practical demonstration of remote radio operation, facilitating both casual listening and more focused signal analysis for those interested in HF propagation and radio reception.

KQ6RH HF quick vertical antenna with plan for several bands from 10 to 75 meters

This guide provides step-by-step instructions for constructing a tin can waveguide antenna, commonly known as a cantenna, for enhancing WiFi signal range. The project is budget-friendly, costing under $5, and utilizes easily accessible materials like a food can and basic electronic components. The design is suitable for 802.11b and 802.11g wireless networks, operating within the 2.4 GHz frequency range. To start, gather the necessary parts including an N-Female chassis mount connector, nuts, bolts, and a suitable can. The assembly process involves drilling holes in the can for the connector and mounting the probe. The guide emphasizes the importance of can dimensions and placement for optimal performance, encouraging experimentation for best results. This project is ideal for amateur radio operators and DIY enthusiasts looking to improve their wireless connectivity without significant investment. Safety precautions are advised, as the author does not hold electrical engineering credentials. Users are encouraged to take responsibility for their equipment and ensure proper assembly. With this simple yet effective antenna, users can extend their WiFi coverage and enjoy enhanced connectivity.

Vertical antenna for 40 meters band

Zelscope is a Windows software that converts your PC into a dual-trace storage oscilloscope and spectrum analyzer. It uses your computer's sound card as analog-to-digital converter, presenting a real-time waveform or spectrum of the signal - which can be music, speech, or output from an electronic circuit.

The Super Loop Antenna page, designed by Jim W4FTU, provides detailed information on the RadioWorks \'Superloop III\' antenna as an alternative for operators with limited space. The page discusses the physical variations of the antenna, including dimensions and materials used, as well as its electrical characteristics such as the 30\' ladder line. The content is useful for amateur radio operators looking for antenna options for the 80 and 40 meter bands, especially those with small lots or zoning restrictions. The page is well-organized and informative, making it a valuable resource for antenna enthusiasts.

Cubic quad antennas are renowned for their high gain, excellent front-to-back ratios, and low angles of radiation, making them a popular choice among amateur radio operators. This resource provides detailed designs for constructing cubic quads optimized for 2, 6, 10, 12, and 15 meter bands. The lightweight structure can be easily built using fiberglass tubes and central hubs, allowing for portability and ease of assembly. The article discusses the specific dimensions and configurations required for both HF and VHF applications, emphasizing the importance of proper spreader lengths and boom dimensions. It also highlights the challenges of assembling larger cubic quads in limited spaces, offering practical solutions for hams with smaller backyards. With a focus on multi-band operation, this guide serves as a valuable resource for both novice and experienced operators looking to enhance their antenna systems.

Cb radio mods, Cobra, Uniden, Midland, Rci, Galaxy, Cherokee, Cap Mods, Mic Wiring

Microphone wiring can be a pain if your not sure how to work out which wire goes where

This antenna is fed for vertical polarisation, to give a low angle of radiation for DX and also a nearly omni-directional radiation pattern.

Cubical quad antenna calculator in java script let you calculate elements size and spacing in inch and meters.

Build this home made yagi antenna for your 2.4ghz wireless ethernet.

Offers a direct portal to real-time public safety communications, specifically focusing on the **NYPD Citywide 1** radio channel. This resource enables monitoring of law enforcement and emergency services traffic, providing insight into ongoing incidents and operational procedures. It functions as a web-based scanner, delivering live audio feeds directly to the user's device, bypassing the need for dedicated scanning hardware. Listeners gain immediate access to dispatch and field unit transmissions, which can be valuable for understanding local emergency responses. While the free version includes initial advertisements, an upgrade to premium service removes ads and offers additional features like feed archives and **alpha tags**, enhancing the listening experience and providing historical context to the live broadcasts.

A 5/8 wave stacked j-pole antenna plan

Portable wire antenna for 40 and 80 meter made with a RF Chocke. Can be adapted to work on 160 meters by adding additional 6.9 meters wire at its end.

Constructing a 2.4 GHz high-gain _cantenna_ for wireless networks is detailed, providing a practical approach to extending WiFi range. The author, WB8ERJ, shares insights into building these devices, noting their application in amateur radio for projects like Hinternet or HSMM (High-Speed Multimedia) networks. The article outlines the necessary components and steps, emphasizing the DIY aspect for hams interested in digital modes and local area networking. The resource explains how to determine the correct probe placement within the can, a critical dimension for optimal performance at 2.4 GHz. It references specific measurements, such as the 1.25-inch distance from the can's bottom, derived from calculations for the 2.4 GHz band. This precision ensures the antenna functions effectively for its intended purpose of signal amplification. Readers gain actionable knowledge for fabricating a functional antenna from common materials, suitable for experimentation or practical deployment in a ham shack or field environment. The focus remains on the hands-on construction and the measurable results of improved signal strength.

Homemade 40 through 6 meter HF portable multiband antenna, an aluminium antenna construction article, with plan, drawings and photos

Copper Cactus multiband J-Pole antenna