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546 links and 1 categories about mode b on dxzone.com

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Antennas : Feed Lines : Choke
  • Common Mode Choke Theory - A common mode choke may be used to reduce a type of electrical noise known as common mode noise. Electro-magnetic interference (E.M.I.) in the circuit's environment is one source of electrical noise.
    [ Hits: 1458 | Votes: 4 | Rating: 1.00 ]
Antennas : Helical
  • A 16 Turn S-Band Helix - This design represents the smallest practical antenna for Oscar-13 mode-S. Perfect beacon reception at all times is possible, and acceptable SSB even at 43,000 km range.
    [ Hits: 8262 | Votes: 3 | Rating: 9.67 ]
Antennas : Theory
  • A Modern Thermocouple Ammeter - Thermocouple ammeters are very rare these days, but the job they were perfect for - measuring antenna currents - is still a modern requirement especially in respect to groundplane currents. By David A. Reid PA3HBB G0BZF
    [ Hits: 2457 | Votes: 1 | Rating: 10.00 ]
CB Radio : Packet and Digital Ham Radio : Band Plans
  • USA frequency allocations - The radio spectrum in usa, PDF File representing the united stares frequency allocations in graphical mode, by NTIA
    [ Hits: 4655 | Votes: 4 | Rating: 8.00 ]
Ham Radio : Blogs : Asia : Japan
  • JA0JBA EH Anntenas - A blog dedicated to EH antennas and other antenna modelling in general
    [ Hits: 1408 | Votes: 5 | Rating: 5.00 ]
Internet and Radio : Sounds
  • Sound samples of digital transmissions - Sound samples of the transmission modes recorded at 11025 samples per second, mono and the message in all of the samples is the same: "the quick brown fox jumps over the lazy dog 1234567890".
    [ Hits: 2482 | Votes: 5 | Rating: 9.20 ]
Manufacturers : Digital and Packet Radio : TNC Manufacturers : Interfaces
  • microHAM - Supply high quality accessories for your ham shack, including Band Decoders, various types of Antenna Switches, Antenna Stacking devices, special devices designed for the SO2R operator, USB Interfaces, Digital Mode Interfaces, Keyers and many others
    [ Hits: 1673 | Votes: 2 | Rating: 10.00 ]
Operating Modes : DSP
  • Pactor ii - PACTOR-II is a fully backward-compatible improvement to the original PACTOR system. It is an adaptive mode that applies different modulation and encoding methods depending on the channel quality.
    [ Hits: 502 | Votes: 0 | Rating: 0.00 ]
  • Pactor III - PACTOR-III is a software upgrade for existing PACTOR-II modems that provides a new data transmission mode for improved speed and robustness. PACTOR-III is not a new modem or hardware device. Most current PACTOR-II modems are upgradeable to use PACTOR-III via a software update since PACTOR-II firmware accommodates the new PACTOR-III software
    [ Hits: 696 | Votes: 2 | Rating: 10.00 ]
  • Psk31 - PSK31 is a digital communications mode which is intended for live keyboard-to-keyboard conversations, similar to radioteletype. Its data rate is 31.25 bauds (about 50 word-per-minute), and its narrow bandwidth (approximately 60 Hz at -26 dB) reduces its susceptibility to noise.
    [ Hits: 1248 | Votes: 1 | Rating: 10.00 ]
  • DRM mode Ham specifications - This document describes the DIFFERENCE of mode HAM to the official broadcast DRM standard
    [ Hits: 1120 | Votes: 0 | Rating: 0.00 ]
Operating Modes : Digital Voice
  • WinDRM - HF Digital Radio Mondiale - WinDRM is the hottest digital mode on HF today! Nothing else exists where you can transfer data at almost 1KB/s without using proprietary hardware. HF Digital Radio Mondiale allow fast data, pictures, and voice over a 2.5Khz bandwidth
    [ Hits: 13550 | Votes: 15 | Rating: 8.86 ]
Radio Equipment : HF Transceivers : Icom IC-746
  • Low cost frequency stabilisation - The Icom IC-746 is quite a popular HF/VHF multimode transceiver which has one shortcoming in its standard configuration when used to operate modes requiring good medium-term frequency stability.
    [ Hits: 1516 | Votes: 1 | Rating: 5.00 ]
Radio Equipment : HF Transceivers : Yaesu FT-857
  • Yaesu FT-857 description - FT-857 HF/50/144/430 MHz ALL MODE HF/VHF/UHF Transceiver
    [ Hits: 905 | Votes: 1 | Rating: 1.00 ]
Software : Antenna analysis
  • Yagi Modeler Applet  updated - This java applet/application implements a simple yagi modeling code. The initial input is a really trivial 2 elmenent yagi.
    [ Hits: 2305 | Votes: 25 | Rating: 6.04 ]
Software : Logging
  • TalkingLogBook - A Windows Freeware general purpose logging and CAT rig control program, primarily for the visually impaired. It has options for improving screen readability including the option of changing font size. Turn on the synthetic speech capabilities and your PC can announce frequency and mode information from the radio and log book information.
    [ Hits: 688 | Votes: 0 | Rating: 0.00 ]
Software : Packet
  • Easyterm EZT3271 - Easyterm for Windows(3.xx and above) is a sophisticated commercial application written for the amateur operator who wants to utilize all of the features of the AEA, HAL, Kantronics or SCS (PTC-II) modems from Packet to AMtor, PACTOR, PACTOR-II(PTC-II), GTor(Kam+), Clover(HAL) or PSK31 (PTC-II).
    [ Hits: 3573 | Votes: 6 | Rating: 3.67 ]
Software : RTTY
  • gMFSK - Linux free multimode HF terminal program. Despite the name, gMFSK can send and receive many digital conversational modes typically used by radio amateurs on HF. Supported modes are: MFSK (MFSK16 and MFSK8) RTTY THROB (1, 2 and 4 throbs/sec) PSK31 (BPSK and QPSK) PSK63 MT63 Feldhell
    [ Hits: 3267 | Votes: 5 | Rating: 9.00 ]
Software : Satellite tracking
  • SatTrack Suite - Satellite Tracking and Orbit Propagation, Reports and Mission Planning Products, Pass Scheduling and Orbit Event Analysis, Dynamic Communications Link Modeling, 3-D Visualization of Complex Scenarios User Defined Regions and Contours, Constellation and Formation Flying Support, Global Positioning System Coverage
    [ Hits: 2228 | Votes: 5 | Rating: 7.20 ]
Technical Reference : Amplifiers
  • Duncan's Amp Pages - This is an internet resource for those interested in guitar amplifiers, vacuum tubes, and design tools such as SPICE modelling.
    [ Hits: 771 | Votes: 5 | Rating: 6.80 ]
Technical Reference : Radio Frequency Interference : Noise Reduction
  • Common-Mode Noise - Receiving Common Mode Noise shows how lack of a balun can contribute to system noise
    [ Hits: 1611 | Votes: 2 | Rating: 10.00 ]
  • Automotive RFI elimination - ARRL pdf file on how remove car noise from your radio. Modern vehicles are RF noisy environments. Come learn how to identify and silence yor mobile noise sources, by WA6PDP
    [ Hits: 2164 | Votes: 4 | Rating: 5.75 ]
Technical Reference : Sound Card Radio Interfacing
  • FT-1000MP interface - YAESU FT-1000/MP/MARK V (filed) interface, this one of numerous RTX sound blaster interfaces you can find on the internet, but this one include: FSK KEYING to use with the RTTY port, DVS-2 to use the interface in AFSK mode, this include all digital modes + voice keyer, CW KEYING
    [ Hits: 5817 | Votes: 0 | Rating: 0.00 ]
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