j m cb radio
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Antennas : 160M- Magnetic Monster Loop Antenna for 160m
- A monster magnetic loop antenna for 160 meters band. This Magnetic loop is optimized for 1840 Khz + 50 Khz. PDF Article published on La Radiospecola 10.22
[ Hits: 847 | Votes: 2 | Rating: 10 ]
- UniBalun: Lightweight Balun/UnUn PCB for QRP Radios (1:1, 1:4, 1:49)
- The UniBalun is a PCB for building a lightweight antenna transformer (Balun) or impedance converter (UnUn) for low power radios. By soldering jumpers and a toroid core, you can create a 1:1, 1:4 Balun or 1:49, 1:9 UnUn. The latest revision (1.2) includes improved pads and supports both BNC and SMA connectors. Build instructions are available for German speakers.
[ Hits: 62 | Votes: 1 | Rating: 1 ]
- TEFV Terminated End Fed Vee Antenna
- The Terminated End Fed Vee Antenna (TEFV) is a travelling wave antenna with constant current distribution. Unlike traditional resonant antennas, TEFV operates without standing waves, using a terminating resistor for broadband efficiency. With a combination of vertical and horizontal polarization, it offers wide bandwidth from 1.8 MHz to 30 MHz, eliminating the need for a tuner. Key components include a 9:1 unun transformer and a 500-ohm terminating resistor. Grounding and counterpoise enhance performance, and it can handle power losses of up to 30%. TEFV provides an effective, versatile antenna solution for amateur radio and broadcast applications.
[ Hits: 186 | Votes: 2 | Rating: 6.5 ]
- Bendigo Sideband Radio Club Inc.
- The BSB Radio Club Inc has been in Bendigo since 1977 that is 34 years continual operating as a CB Radio Club.
[ Hits: 351 | Votes: 3 | Rating: 5.67 ]
- MCBRN Michigan Citizens Band Radio Network
- MCBRN Michigan Citizens Band Radio Network a volunteer group/organization for maintaining two way communications during an emergency, crisis, disaster, or blackout, using CB FRS MURS and WiFi. Includes plans, message relay services, neighborhood watches, large events, encampments and gatherings.
[ Hits: 162 | Votes: 0 | Rating: 0 ]
- Hevener.Org - HAM Radio Centralized
- Amateur / HAM / CB Radio Resources and Information including reviews, projects, licensing and FCC Enforcement.
[ Hits: 307 | Votes: 2 | Rating: 9.5 ]
- Recognition of CW signs at different listening levels and frequencies
- The recognition of telegraphy masked by noise at 40 and 80 signs/min telegraphy speed was studied in 10 normal-hearing subjects at different sound pressure levels (25-85 dB SPL in steps of 5 dB) as well as at different test frequencies (2000, 1000, 800, 630, 500 and 250 Hz). The ability to recognize the signs varied with varying SPL. Recognition for most of the subjects was best at an SPL close to 70 dB.
All subjects improved their recognition as the frequency was lowered to 500 Hz, some even at 250 Hz. These facts should be taken into consideration when training telegraphy operators as well as in the construction of radio receivers to permit listening at low frequencies. Furthermore, the critical ratio was calculated at the different test frequencies.
[ Hits: 81 | Votes: 1 | Rating: 7 ]
- Introduction to NPR New Packet Radio - Presentation
- A Quick start guide to NPR New Packet Radio on 70 cm band by the NPR author Guillaume F4HDK. This presentation introducte basic concepts of this niew digital protocol, and guide the user to the first modem configuration both of client and master modems. Includes a final recap of commands.
[ Hits: 386 | Votes: 2 | Rating: 6 ]
- FTL Distributing
- CB radio, marine radio and accessories
[ Hits: 482 | Votes: 1 | Rating: 4 ]
- Communicationworld.nl
- Ham radio shop based in Holland, dealer for cb radio products, amateur radio transceiver,Yaesu Icom and Kenwood, antennas cables and accessories
[ Hits: 432 | Votes: 6 | Rating: 10 ]
- Hjem - Velkommen til Nye Norworld online
- Selling all brands of Hamradios and CB Radios based in Norway
[ Hits: 254 | Votes: 0 | Rating: 0 ]
- ZenitPCB
- An excellent tool to create, design printed circuit boards in a simple and easy to learn way. ZenitPCB is free for personal and amateur use, limited to 1000 pins, that is more than enought for any amateur radio electronic project
[ Hits: 142 | Votes: 1 | Rating: 8 ]
- CB Radio and 10 meter radios reviews
- CB Radio and 10 meter Radio reviews & mods blog. Most articles are in Japanese
[ Hits: 1592 | Votes: 11 | Rating: 6.27 ]
- House ground layouts
- Hams or amateur radio operators and CB operators usually cannot have ideal grounds, but with some care and planning they can have nearly perfect systems
[ Hits: 609 | Votes: 0 | Rating: 0 ]
- Juma Keyer1
- Miniature PIC microcontroller based keyer kit with convenient modes. The kit includes PCB, componets, knob and ready programmed PIC microcontroller. Author make available from his web site Circuit diagram, Component layout,List of components and downloadable Software
[ Hits: 101 | Votes: 0 | Rating: 0 ]
- Jaws Mk2 CB Conversion to 10M
- Converting a CB Radio for 10 meter use
[ Hits: 594 | Votes: 1 | Rating: 1 ]
- Tulip SDR
- SDR Project for a compact amateur radio software defined radio trasceiver covering HF bands all mode. Website includes schematics, element PCB, pictures, movies, firmware and elements bom.
[ Hits: 369 | Votes: 5 | Rating: 8 ]
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