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An inexpensive condenser microphone with excellent performance can be easily constructed with easily available parts.

glfer is a program for reception and transmission of QRSS/DFCW signals. It is composed of two main parts: the spectrogram window, where you can see the spectrum of the received signal vs. time the transmission functions, to emit cw characters at a slow but precisely controlled speed, using the QRSS (slow CW) or DFCW (Dual Frequency CW) modes

The **HFRadioSales.au** resource provides a commercial outlet for amateur and commercial radio operators seeking HF SSB equipment and related services. It focuses on the Australian market, offering new and refurbished transceivers, antennas, tuners, and a wide array of spare parts for brands like Codan, Barrett, and Qmac. The site details its role as a licensed dealer for new Barrett Communications and Codan radio and antenna systems, including specific models such as the Barrett 4050, 2050, and 950, and Codan Envoy and NGT series. This platform supports various applications, including vehicle, 4WD, outback, marine, and base station setups, catering to networks like HF Radio Club, VKS737, and RFDS. It also features commercial-grade antennas from Bushcomm, such as the BBA100C and SWC100, available for fast shipping from their Queensland warehouse. The site includes an FAQ section with general information on mobile HF communications in Australia and timelines for specific transceiver models.

Italian magazine mainly dedicated to homebrew and parts

It is a application which can be used for troubleshooting CB radio faults, by giving a graphical display of the normal operating frequencies generated by various parts of the CB radios circuits, it can help you identify if a frequency is incorrect or even missing. Another good use for this software is simulating possible frequency expansions, as it allows you to choose any frequency that the PLL is capable of generating, so you can see what the radio will allow you to get !

Knobs, slicers and antique radio parts for heathkit Johnson Kenwood Hallicrafters Hammarlund and many more

Frequencies, links for scanners, email lists, online audio and more for Maryland, DC, and parts of Delaware and Virginia

Kenwood Sales, Service, repairs, parts, FAQ, information

Replicating vintage radio components addresses the challenge of restoring classic receivers and transmitters to their original aesthetic and functional condition. Many historical radios, particularly those from the _Golden Age of Radio_ (1920s-1940s), suffer from brittle or missing control knobs and trim pieces, making authentic restoration difficult. This resource focuses on manufacturing new parts that precisely match the originals, ensuring period-correct repairs. The service offers a vast catalog of reproduced items, with thousands of molds created since 1987. This extensive inventory includes a wide spectrum of knobs and pushbuttons, along with some plastic escutcheons, grills, and handles. The meticulous reproduction process ensures that restorers can find accurate replacements for brands like Philco, Collins, and Atwater Kent, preserving the historical integrity of these valuable pieces of radio history. The owner, Larry Bordonaro, has been in business since 1987, demonstrating deep experience in this niche.

3d parts printed to build an EZ-Lindenblad 2 Meters LEO Sat antenna as designed from Anthony Monteiro

Norm's Rotor Service specializes in sales, service and parts for ham radio antenna rotators, antenna rotator, antenna rotors

Bird Technologies supplier of RF products, like RF Meters, Bird 43, VNA, Spectrum analyzers, attenuators, transmitters combiners, dummyloads, terminators and replacement parts

A 5 band two element quad antenna working from 20 to 10 meters using hardware-store parts or modifying an existing commercial triband quad by KC6T

Establishing a robust, interconnected communication infrastructure across challenging terrain, the Island Trunk System (ITS) provides a network of open amateur radio repeaters for general and emergency communications throughout Vancouver Island, surrounding waters, and parts of the lower mainland on the West Coast of British Columbia, Canada. This system, largely off-grid, relies on solar power and batteries, necessitating careful operation, especially during night hours and low solar charging seasons, to preserve its energy resources. Maintaining the ITS involves significant effort from many hams, who appreciate adherence to regulations, including proper station identification. The system hosts a weekly social net every Monday evening at 8 PM, welcoming all participants, and also supports a Vancouver Island Region Emergency Radio Net each Wednesday at 19:15. Experimental projects like the Newcastle Ridge webcams, linked via 5.8 GHz broadband backhaul over 206 km to Nanaimo and Comox, demonstrate the innovative spirit within the ITS community. A new VHF repeater, operating on 146.880 MHz with a 141.3 Hz PL tone, was installed in Tofino, expanding system coverage.

RFAC Solutions specializes in providing a range of RF components, including various connector types, cable assemblies, attenuators, and filters. Their product line features common connector standards such as SMA, BNC, TNC, N-Type, MCX, and MMCX, essential for reliable RF signal paths in amateur radio and commercial applications. The company also offers high-power VHF amplifiers, catering to needs for signal boosting in specific frequency ranges. Their offerings extend to dust caps and adapters, which are crucial for maintaining the integrity and versatility of RF systems. The focus on supplying components from South Korea suggests a commitment to specific manufacturing standards and supply chain practices. This resource details a vendor's product scope, useful for hams sourcing specific parts for shack builds or antenna projects. Jeff is listed as a contact for inquiries.

Antique radios, ham radio, electronic parts, test equipment, stereo equipment, record players, phonographs, tape recorders, gadgets, Bought & Sold Online

Calnet a multi repeater amateur radio system serving most of California and parts of Nevada. The Calnet system consists of numerous fulltime linked 440 MHz repeaters connecting San Diego to San Francisco and Lake Tahoe.

RF parts, filters, rf switching products.

Thousands of electronic and electro-mechanical parts and supplies

Distributor of Sovtek, other current production vacuum tubes, and NOS tubes. Distributor of electronic parts for audio and musical instrument amplifiers. Manufacturer/ Distributor of Electro-harmonix effects.

Presents a QRP AM/CW transmitter project specifically designed for the 10-meter band, utilizing a crystal oscillator and a collector-modulated AM oscillator. The design employs a 2N2219(A) transistor in a Colpitts configuration, generating 100 to 350 mW of RF output power depending on the 9-18 Volt supply voltage and modulation depth. Frequency stability is maintained by a 28 MHz crystal, with fine-tuning possible via a Ct1 trimmer capacitor for approximately 1 kHz adjustment. The resource details the RF oscillator stage, implemented with a 2N2219 NPN transistor, emphasizing frequency stability and low power dissipation. It also covers the amplitude modulation stage, managed by a 2N2905 PNP transistor, which impresses audio information onto the carrier. Selective components (C3, C4, C7, C5) enhance voice frequencies within a +/- 5 kHz bandwidth, and modulation depth is controlled by R2 and R3. The project includes a 3-element L-type narrow bandpass filter (Ct3, L3, C10) to suppress harmonics and ensure a clean output signal. The project provides a complete schematic diagram, a comprehensive parts list including specific capacitor, resistor, and inductor values, and construction notes for the coils (L1, L2, L3). It also offers practical advice on enclosure requirements, suggesting an all-metal case or a PVC box with graphite paint for RF shielding. Operational parameters such as current draw (27mA@9V to 45mA@16V) and input impedance (50 Ohms) are specified, alongside guidance on antenna matching and the importance of a valid amateur radio license for 10-meter band operation.

Svetlana tubes also Russian capacitors,vacuum and coaxial relay, for RF Power Linear Amplifier builders. Amateur-Radio, Broadcast. Full Online Catalog.

This is a "techie" site, dedicated to presenting service manuals, parts lists, schematic diagrams and other information of value to restorers and technicians who try to keep these radios working

Carry a small stock of new and reconditioned parts for both rotators and control boxes for the following makes: CDE/HYGAIN , YAESU , STOLLE.

What electronic parts you can recover from PC monitor, VCR, CD-ROM, FDD, HDD , Laptop, Motherboard, SmartCard reader or Printer

Heathkit Amateur Radio Repair, parts, and manuals. Amateur radio equipment sales and service.

Skycraft Parts & Surplus, Electronic Surplus Store in the Southeast, antenna parts, wires.

Don't neglect one of the most important parts of your station!

The Mt.Vaca Radio Club (Call sign K6MVR ) owns and operates repeater systems in and around Sacramento, California. The systems provide reliable coverage for mobile stations throughout the Sacramento Valley region and beyond to Modesto, Chico, the Sierras, and parts of the Bay Area.

Amateur radio delaer for major ham radio brands in Japan

Heathkit Icom Kenwood Power Transistors Ten Tec Yaesu spare Hamradio parts.

Chronicles technical discussions and operational queries related to various Yaesu amateur radio equipment, primarily from February 2004. Topics include troubleshooting the _FT-101E_ -100v circuit, questions about the FT-990, and inquiries regarding the _VX-7R_ service manual. Operators discuss issues like the FT-101's transmit problems, FT-1000D tuning knob behavior, and the FT-897's linear amplifier control. The archive also contains posts about specific components, such as the 2SC2652 RF power transistor, and requests for parts like FT-221R boards. Users share information on CAT interface cables for the FT-1000D and discuss features of handhelds like the VX-2R and VX-7R. This historical snapshot provides insights into common problems and user-driven solutions for Yaesu gear from that era. Several posts offer items for sale, including an FT-208R and an MD-1 desk microphone, alongside requests to buy specific transverters like the FTV-650B.

Toronto Surplus , antique radio, test equipment, rf parts

Examines the historical role of telegraphy within Canadian railway operations, detailing the evolution of communication systems crucial for train dispatch and coordination. It covers the technical substance of railway telegraphy, including equipment, operational procedures, and the personnel involved, such as agents and operators. The resource provides insights into the **F59PH locomotive** history, development, and components, alongside diagrams of various parts like antennae and traction motors. The content also explores the practical application of these systems by documenting specific railway events, such as the CPR Galt Sub operations from 1895-1971 and GO Transit's operational history. It includes photo galleries, schematics, and diagrams of locomotives and cab cars, offering a visual and technical comparison of different railway equipment. The site also features information on **GO Transit** rolling stock, including MP40s and commuter coaches, providing a historical context for railway communication and transportation.

160 meter tx antenna array

Third-order Cauer filters can boost performance of multi-transmitter, multi-operator contest stations to the next level. The filters are practical and you don’t need expensive test equipment to align them.

Japanese electronic parts online shop offer a wide range of products, from microchip pic to leds and batteries to any kind of connectors

Pioneer supplier in the radio parts field, and electronic components, alternative power products, kits, test equipment and computer components.

An inexpensive rechargeable CMOS battery system that can be built from readily available parts.

The resource details the construction of a multiband trap-style Inverted-V antenna designed for operation on 3.5 MHz, 7 MHz, 14 MHz, 21 MHz, and 28 MHz. It presents specific winding data for the traps, including the number of turns, wire gauge, and coil former dimensions, crucial for achieving resonance on the target bands. The document provides a parts list and a diagram illustrating the antenna's physical layout and trap placement. It outlines the process for building the traps using PVC pipe formers and specifies the required capacitor values for each trap. The design emphasizes a practical approach to achieving multiband operation with a single feedline, a common goal for HF operators with limited space. The document includes a table with antenna segment lengths for each band, allowing for precise replication of the design. It also offers insights into tuning and adjustment, ensuring the antenna performs optimally across the designated amateur radio bands.

This is another alternative home-brew center connector for a dipole. The parts used are common PVC accesories found at the home supply store.

Manufacturer of fiberglass parts for kites

This simple 30m QRSS beacon is built entirely out of junkbox parts, the only component purchased specifically for this project was the 10,140kHz crystal.

Supplying Toroids, Electronic Parts and Kits to Engineers, Schools and Hobbyists. Capacitos, filters, inductors, qrp products

Amateur radio accesories, power supplies, electronic parts, antenna controllers and antennas manufacturer based in Spain

PACTOR mode radio modems and accessories, performance sailing electronics and innovative hard to find parts. Audio cables, packet cables, usb to serial converters

Ham Radio Antenna parts and kits manufacturer, based in Germany

The direct conversion receiver described consists of only a bandpass filter, mixer IC, VFO and audio filter. With only 22 parts, this simple circuit should take a few hours at the weekend to construct.

Speaker repair, reconing, re-edging, speaker parts, DIY re-edge kits.

A selection of radio collectors from all around the world interested in collecting, repairing, restoring, trading, selling parts, radio magazines, advertising collectibles, old records and technical talk.