cab radio

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cab radio

120 links - and 1 categories

Antennas : Baluns
  • Choking balun for 160-30 meter band - Choking balun for lower HF and MF bands. (1.8MHz - 10MHz). Requiring a choking balun to isolate the potential RF pick up on the coax cable as it runs past equipment such as computer within the radio room at lower HF and MF frequencies a simple method of winding RG58 coax onto a Powdered Iron Toroid Core was constructed.
    [ Hits: 196 | Votes: 3 | Rating: 6 ]
Antennas : Feed Lines : Choke
  • RF Choke with Bifilar Windings - This article presents an RF Choke featuring an 11-bifilar turn winding of #14 house wire on a Fair-rite FT240-31 toroid. The choke is enclosed in a 3D-printed case from Thingiverse, though this may pose thermal concerns at higher power levels. With SWR concerns up to 30MHz, the author plans to employ two series chokes at the rig input for improved performance. This choke offers versatility for portable use, with potential mismatch resolution using an antenna tuner. Further testing is anticipated upon the arrival of new cables.
    [ Hits: 85 | Votes: 0 | Rating: 0 ]
Operating Modes : Digital Modes
  • Ribbit digital text messaging mode for HF/VHF/UHF - Ribbit is a novel digital text messaging mode for VHF/UHF communications for recreational and emergency use which radically increases the density of information transmitted by spectrum used. It leverages the computing power of the modern smartphone to increase the capabilities of any Handy Talkie without requiring any additional hardware or cable. A Ribbit message is fixed in duration at 1250 milliseconds. It is sent over audio modulation with a 2kHz bandwidth centered on 1.5kHz. It is preceded by 400ms of white noise to open analog squelch circuits.
    [ Hits: 131 | Votes: 1 | Rating: 10 ]
Operating Modes : Mobile
  • A mobile radio installation - Detailing a Yaesu FT-857 and ATAS-120 installation in a 1997 Toyota Tacoma, the author used Polar Plot to map signal strength. Using a hand truck with a laptop, FT-817, and an Iron Horse antenna, they circled a chalk-outlined 100-foot diameter, revealing potential nulls towards the truck's rear and through the cab, offering insights into antenna performance.
    [ Hits: 43 | Votes: 1 | Rating: 3 ]
Operating Modes : Portable Operations
  • Reducing the Cable Mess - Optimizing the cable connections for cat control and audio input output by implementing the digirig mobile. A small audio and rig control interface, with a single USB cable supports most QRP radios requiring external audio and CAT control facilities
    [ Hits: 155 | Votes: 0 | Rating: 0 ]
Radio Equipment : VHF-UHF Handhelds : Kenwood TH-F6A
  • Kenwood TH-F6A Cable - Build a cable to connect your PC to the Kenwood TH-F6A radio
    [ Hits: 38 | Votes: 0 | Rating: 0 ]
Shopping and Services : Ham Radio Stores
  • Midway Electronics - Midway Electronics supplies the area with electronic components, wire, cables, amateur radio transceivers, QRP kits, CB transceivers, GMRS radios, Shortwave radios, power supplies, antennas, coax, connector and ham radio accessories
    [ Hits: 215 | Votes: 2 | Rating: 3 ]
Software : Android
  • aLog365 - aLog365 is a ham radio (amateur radio) logbook for Android and for apple iOS. Includes features for SOTA, POTA, WWFF operations, export to all popular log file formats ADIF, EDI, Cabrillo. Upload data to HRDLOg.net Ham465 and includes dx cluster spots. iOS version is compatible with iPhone, iPad, and iPod touch and provides also an up to date DX Pedition plan.
    [ Hits: 94 | Votes: 0 | Rating: 0 ]
Software : Awards tracking
  • County-Hunting Mapper - A unique, easy-to-use Amateur Radio program for creating County, State, Section and Grid Locator outline maps of North America that can be filled by Hand, from a Contest Logger UDP Feed, or from Imported ADIF or Cabrillo Logs.
    [ Hits: 126 | Votes: 0 | Rating: 0 ]
Software : Log Converters
  • LogConv - LogConv is a versatile utility designed to convert Amateur Radio log files between various formats such as ADIF, Cabrillo, CT9, CT10, EQF, and TR Log. It offers both GUI and Command line versions for user convenience. LogConv normalizes QSO data, breaking it into separate fields for better visibility. Additionally, it can extrapolate geographic information from contest exchanges, aiding in awards tracking
    [ Hits: 27 | Votes: 0 | Rating: 0 ]
Technical Reference : APRS
  • Building an Enhanced APRS IGate with Debian 12 and Raspberry Pi - The guide outlines necessary components, including a 2m FM analog radio, USB audio adapter, and Raspberry Pi. Building a cable to connect these elements is assumed, as is knowledge of Raspberry Pi OS installation.
    [ Hits: 47 | Votes: 0 | Rating: 0 ]
Technical Reference : Arduino
  • The AntennaPi - This is a remote antenna switch I use in my attic to connect transceivers in the basement to multiple antennas in the attic. The goal of this project is to be able to remotely connect one of the antennas in the attic to the only antenna cable available.
    [ Hits: 132 | Votes: 0 | Rating: 0 ]
Technical Reference : Batteries
  • USB-C charging for Handheld Radio Transceivers - The article highlights the common absence of modern USB-C ports on handheld ham radios and the limited use of USB for power. The author, [jephthai], shares a solution involving a USB-C cable with power negotiation capabilities, allowing the radio to be powered by USB. By splicing Anderson power pole connectors onto the cable, the radio can now be conveniently powered by a USB battery bank, providing a practical alternative to traditional 12 V batteries for off-grid operations.
    [ Hits: 141 | Votes: 1 | Rating: 10 ]
Technical Reference : Ham Radio Go Kits
  • Yaesu FT-891 Go-Box for POTA - This article documents the author's latest go-box build for outdoor ham radio operations using a Yaesu FT-891 transceiver. The go-box is constructed from a plastic "50-cal ammo case" and contains various components, including the transceiver, LDG Z11 Pro autotuner, DIY Yaesu FH-2 remote control keypad, and an external battery. The author details the design considerations, the mounting of components inside the box, and addresses issues related to ventilation and cable management. The go-box is geared for CW operations and POTA activations, with further modifications planned for a microphone and DATA jack. This project allows for rugged, environmentally protected outdoor radio operations while maintaining portability.
    [ Hits: 188 | Votes: 0 | Rating: 0 ]
Technical Reference : Mic wiring
  • Icom External Keypad Connector Cable - To connect the external keypad to your Icom radio you’ll need to make a connector cable like this.
    [ Hits: 95 | Votes: 1 | Rating: 1 ]
Technical Reference : Programming Radio
  • A Universal Programming Cable for Radios - The programming cable is intended to be used with a computer RS-232 port for programming radios and other devices. The main goal of this cable schematics is inverting signal levels.
    [ Hits: 89 | Votes: 0 | Rating: 0 ]
Technical Reference : Radio Frequency Interference
  • Prevention and Suppression of RF Interference to Audio Systems  new - In this study, the author builds upon Muncy's research, demonstrating that radio-frequency current on cable shields affects audio systems through the "pin 1 problem" and shield-current-induced noise (SCIN). An enhanced equivalent circuit for ferrite chokes is proposed, addressing dimensional resonance and inductor self-resonance. Field tests confirm that chokes reduce interference across 500 kHz to 1,000 MHz. Guidelines for diagnosing and mitigating EMI from various sources are provided for product development and field installations.
    [ Hits: 42 | Votes: 0 | Rating: 0 ]
Technical Reference : Radio Frequency Interference : Noise Reduction
  • Common-mode chokes Measurements - Common-mode chokes are useful solutions for RFI reduction. Winding a few turns of coaxial cable on the FT 240-31 toroid can reduced the noise below the received noise floor. In this article author measure different chokes
    [ Hits: 155 | Votes: 1 | Rating: 8 ]
Technical Reference : Sound Card Radio Interfacing
  • APRSdroid to a Baofeng Cable - Cable for connecting APRSdroid to a Baofeng UV-82 Radio (APRS via RF)
    [ Hits: 213 | Votes: 1 | Rating: 10 ]
  • Baofeng UV5R TRRS Adapter - A tiny board, which allows a smartphone or similiar device to connect to the Baofeng UV5R radio via a TRRS audio connector. It allows for connecting the radio to a software TNC app such as APRSDroid or PocketPacket. Solder on the components, solder on the cables, then provide some stress relief, (I use solid-core wire and heat shrink tubing), and you can use your UV5R with your smartphone for APRS on the cheap.
    [ Hits: 91 | Votes: 0 | Rating: 0 ]

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