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Live streaming audio from Redding police, Redding fire, hospitals, ambulances, Fish and Game, Anderson police, search & rescue, CHP, and fire districts. Redding Californa.

Blackford and surrounding counties Police, Fire, EMS, and EMA.

5W portable solar charger project that uses both your ham and carpentry homebrewing skills.

The antenna build into this project is made from 2 fishing poles on a fiberglass pole in the center.

Kurzwellenbandplane der IARU Region 1 available in german and in english

QRG_DB is a database for the Palm OS computer to control a Yaesu FT-817 Transceiver via the CAT interface

A multi-band portable vertical antenna can be built with relatively ordinary components obtained from the local hardware store, including replaceable loading coils

The antenna is a VHF side is a 2m moxon, tuned on 145.825 MHz. The driven element of the moxon couples to a driven element for a 5 element 70cms Yagi, tuned on 436.5 MHz.

A practical approach to microwave signal analysis for the home experimenter

Experiments with spiral dipole antennas. Includes two spiral antenna designs for 20 and 40 meters band by KN9B

An Arduino TNC modem project based on KI4MCW source code with pictures and schematics

conversion of low band VHF AWA 25M-1 carphone onto 6 metres.

A switchable Magnetic Transformer for Transmitting for various impedances

Configurations of the vertical antenna arrays used at 6Y2A

Constructing the QE19 Antenna Launcher

Triple-band (2-2.5 GHz, 6.5-7 GHz, 12-13 GHz) central receive systems with automatic airborne tracking.

Experiments on remote receiving loops antenna by Lyle Koehler, K0LR

Solving Ignition Noise RFI article. Help on removing noise interfences caused by ignition

An optimized QRP transceiver for 40 meters band

Examines Kiwa, a global entity specializing in **Testing, Inspection, and Certification (TIC)** services across diverse sectors. The resource details Kiwa's operational scope, which encompasses quality assurance, safety compliance, and sustainability solutions for industries such as Food, Feed and Agriculture, Digital and Cyber Solutions, Energy Transition, Industrial Services, and Medical Devices. It highlights the company's role in ensuring product, service, process, and system integrity through rigorous accreditation and notification processes, operating in over 35 countries worldwide. The content presents specific examples of Kiwa's engagement, such as food safety certification for HortaPronta in Portugal, explanations of the Digital Battery Passport requirements, and contributions to floating offshore wind energy development. It also outlines the company's approach to biological evaluation of medical devices according to **ISO 10993** and its commitment to ESG principles, as detailed in its online ESG magazine, Trace. The resource provides access to a certificate finder and a testing directory with over 3000 capabilities across 80 laboratories.

RadioComm can be used to program your Icom radio's memory, or to create nice radio-frequency spectra or to interface your radio to a huge database of frequencies.

The ZS6BKW multiband antenna, an optimized variant of the classic G5RV, features a 102-foot (31.1 m) horizontal span and a 39.1-foot ladder line matching section. This design, derived by G0GSF (formerly ZS6BKW) in the early 1980s using computer programs and _Smith charts_, aims for improved SWR across multiple HF bands compared to its predecessor. Construction details specify Wireman 554 ladder line and #14 AWG THHN copper wire for the radiators, with precise instructions for determining the velocity factor (VF) of the ladder line using an antenna analyzer or dip meter, ensuring accurate physical length for the matching section. The radiator length is electrically 1.35 wavelengths for the 20-meter band, requiring careful trimming during tuning. Field measurements with an _AIM-4170C_ analyzer by KI4PMI and NC4FB demonstrated good SWR curves and bandwidth on 6, 10, 12, 17, 20, and 40 meters. The antenna was deemed unusable on 15 and 30 meters due to very high SWR, but an LDG AT-100PRO autotuner successfully brought 6 and 80 meters into tune. Contacts were made on 80, 40, 20, and 17 meters, including a **17-meter** contact to Spain. EZNEC models for 80-6 meters are provided, along with an AutoEZ model by AC6LA, which predicted good SWR for 80-10 meters. W5DXP's modifications for an all-band HF ZS6BKW are also referenced.

This handy and cheap portable dipole can be folded and backpacked, carried in use, and adjusted to a very wide range of frequencies by KV5R

Makers of universal digital rotor controllers including wireless controllers

Kurzwelle, shortwave, Radio , DX, broadcasting, QRG, SWL, receiver, Empfnger, BCDX, DX-Clubs, hobby, QSL, schedules, Frequenzen

Diplexer is a passive device, a special filter circuit that seperates 2 different bands, not to be confused with the duplexer that usually separate 2 different frequencies on the same band.

Home of the ARA Club W3CWC, Proud Sponsors of the Maryland DC QSO Party and The Hagerstown Hamfest

Inspired by Milan OK7GU, the goal is to build an universal antenna controller - for different types of rotor, different motor, encoder

A Variable Base-Loading-Coil for use under a HF Mobile Whip

"Dash! The Dog-Faced Ham" cartoons by k1nss

This modification will allow the use of separate receive and transmit antennas on the Kenwood TS-850S/AT.

Belarus

Graphics representing solar cycles 21-24. This graphs show solar activity since 1976

The _Italian VHF Beacons_ resource provides a detailed listing of active and QRT amateur radio beacons operating across VHF, UHF, and SHF bands within Italy. Each entry specifies the beacon's callsign (e.g., IQ1SP/B), operating frequency (e.g., 144.411 MHz), QTH locator (e.g., JN44VC), effective radiated power (ERP) in watts, and antenna configuration (e.g., Big Wheel, 4x Dipole, Yagi). This data is crucial for radio amateurs involved in propagation studies, equipment testing, and long-distance (DX) communication on these higher frequency bands, offering fixed signal sources for monitoring. This compilation, last updated in October 2005, serves as a historical snapshot of Italian beacon activity. For instance, it lists several 144 MHz beacons with ERPs ranging from **0.1W** to **10W**, and higher frequency beacons such as I8EMG/B on 1296.880 MHz and I3EME/B on 24192.132 MHz. The inclusion of QRT (Quiet Radio Teletype) status for many entries indicates the dynamic nature of beacon operations over time. Users can utilize this information to identify potential signal sources for band openings or to calibrate their receiving equipment against known transmissions.

News and general information about Oromia and the Oromo people Ethiopia

Home made WiFi 11dBi, wide band antenna by T. Marshall

Eham users reviews for Yaesu VX-150

This Arduino library allow you to control various functions of Yaesu FT-857 through the use of CAT functions. This may work even with FT-817 and FT-897.

Malta Amateur Radio League - Official Malta Club and QSL Bureau

Pittsburgh's largest ham radio site.

Official french AT Web Site

Detailed online and searchable maps, driving directions and city guides

TARA is the Troy Amateur Radio Association (N2TY) of Troy, New York. We sponsor the Annual TARA RTTY Sprint and we sponsored the worlds 1st PSK Rumble!

Homebrew-page of PG1N with lots of homebrew links

Pirate radio recordings, addresses, links and QSLs

Classical coax-fed, off-center-fed dipole, feeded with a 4:1 Guanella balun

How to build a slingshot antenna launcher. Slingshot antenna launchers are used to launch a line over a tree branch, so antennas can be suspended from high up trees

What is the Automatic Identification System (AIS)?

A workign example of a simple half-sized, end fed halfwave for 160 meter band by N0LX

Examines PSKGNR, a software front-end specifically engineered to augment the functionality of existing PSK31 applications such as PSK31SBW and PSK31EVM. The resource details how PSKGNR integrates capabilities like typeahead for faster text entry, macro support for automating common phrases or commands, and other operational enhancements that streamline the PSK31 digital mode experience. It outlines the program's role in improving user interaction and efficiency during PSK31 QSOs by providing a more robust interface over the base software. The content highlights the practical benefits for digital mode operators seeking to optimize their workflow and reduce repetitive tasks. It positions PSKGNR as a utility for refining the user interface and adding advanced features to established PSK31 software platforms.