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Amateur radio antenna manufacturer, HF VHF UHF antennas, and amateur radio accessories dealer based in Lingen Germany

Amateur radio SDR Receiver and Transceiver manufacturer , makers of the Silphase R1 an innovative HF receiver with high performance real-time spectrum scope.

Showcasing German engineering, ANjo Antennen develops and manufactures a diverse portfolio of amateur radio and commercial antenna products. Their offerings span a wide frequency range from 1.8 MHz to 3000 MHz, emphasizing electrical and mechanical precision for longevity. The company actively participates in events like FUNK.TAG Kassel, providing opportunities for direct engagement and order pickup. ANjo's product line includes high-performance **Yagi antennas** optimized for Tropo and EME, along with multi-stacked Quad antennas designed for contest operations, featuring wide horizontal and narrow vertical beamwidths. They also produce circularly polarized satellite antennas, some with switchable LHCP/RHCP, leveraging their commercial satellite antenna expertise. Beyond amateur applications, ANjo provides flexible, custom antenna solutions for commercial sectors such as BOS, EMC measurements, and telemetry. Their commitment to quality is evident in the Premium-Line antennas, which utilize **1.4301 (V2A) stainless steel** for mast clamps and connectors, ensuring durability and corrosion resistance. They also offer end-fed HF multiband wire antennas, known for their compact footprint and discreet installation.

Learn how LoRa mode can be used for APRS and connected mode packet radio, offering low power and long-range communication. Discover the growing popularity of LoRa-only APRS devices and the use of LoRa boards from manufacturers like Lilygo, Heltec, and RAK. Find out about firmware options like Ricardo Guzman's CA2RXU firmware, which incorporates previous work and offers KISS for external APRS clients. Explore LoRa APRS frequency and modulation settings in the UK, and consider adding CA2RXU firmware to lora-aprs.live for more radio-specific information. Dive into the world of LoRa technology for ham radio operators and experiment with different firmware options.

A high-technology enterprise specializing in the R&D, production and sale of two-way radio equipment for over twenty years. DMR Radio, Digital and analog portable radio manufacturer based in China

Illustrates the potential for radio frequency (RF) energy from amateur transceivers to interfere with vehicle electronics, drawing parallels to military _Radio Frequency Vehicle Stopper_ (RFVS) technology. The resource details personal experiences with VHF/UHF signals activating household devices and then pivots to the complexities of RF interaction with automotive systems, noting the development of multi-frequency RFVS (MFRFVS) to overcome vehicle-specific vulnerabilities. It highlights that while car manufacturers conduct RF immunity tests, the rigor varies, with luxury brands likely performing more extensive evaluations than others who merely meet minimal certification. The article explores practical considerations for mobile amateur radio installations, suggesting antenna placement over the car, using lower power output, and proper grounding to mitigate adverse effects. It acknowledges the lack of comprehensive data on RF/vehicle combinations but emphasizes that adherence to these basic principles can reduce risks. The author shares observations of unexplained car computer codes in a 2002 SUV, speculating on potential RF induction. Concerns are raised about the increasing complexity and interconnectedness of modern car electronics, including Bluetooth, remote access, and electronic control systems for critical functions like steering and braking. The article points out the diminishing space for third-party installations in contemporary vehicles and references the ARRL's stance on auto manufacturer policies regarding amateur radio installations, which generally advise against them.

Manufacturer of Foul Weather Whip Antenna a robust, dual-band UHF/VHF antenna with a quick-disconnect BNC connector, offering ~3dBi gain and compatibility with various handheld radios.

Optimizing on-air audio for SSB, DXing, and contesting operations is addressed through a range of specialized audio processing equipment. The offerings include multi-band equalizers, specifically 5-band, 8-band, 10-band, and 12-band units, some integrated with features such as compressors, echo effects, noise gates, and phase rotation capabilities. These devices are engineered to interface with common amateur radio transceivers, with explicit compatibility noted for models like the Yaesu FT-DX10, FT-DX101D, FT-1000MP, FT-DX5000, Collins HF-380, and Flex 6300, alongside analog S/P meters for Icom rigs. The product line focuses on enhancing microphone audio characteristics, supporting XLR dynamic microphones for improved signal clarity and presence. The manufacturer, DB6QW Electronics, emphasizes direct support and a 100% manufacturer's warranty, reflecting confidence in product quality and operational reliability. This resource details specific audio processing tools designed to refine the transmitted audio signal, providing operators with granular control over their voice characteristics for competitive and casual amateur radio communications.