mode b643 links - and 1 categories
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: 8673 | Votes: 4 | Rating: 7.50 ]
- 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: 2670 | Votes: 2 | Rating: 6.00 ]
- 1TA157 Using PSK31 on cb band
- CB band in Italy using latest digital modes
[ Hits: 2656 | Votes: 9 | Rating: 5.89 ]
- USA frequency allocations
- The radio spectrum in usa, PDF File representing the united stares frequency allocations in graphical mode, dated 2003
[ Hits: 5187 | Votes: 4 | Rating: 8.00 ]
- JA0JBA EH Anntenas
- A blog dedicated to EH antennas and other antenna modelling in general
[ Hits: 1533 | Votes: 5 | Rating: 5.00 ]
- PacComm Packet Radio Systems
- Packet Modems, tnc, portable tnc manufacturer
[ Hits: 3738 | Votes: 7 | Rating: 7.57 ]
- MFSK is an easy-to-use chat mode for real-time amateur contacts, nets and bulletin transmissions, but not intended for contesting or Bulletin Board System (BBS) use. It is a half-duplex non-Automatic Repeat ReQuest (ARQ) forward-error-correcting (FEC) mode. It performs well on long-path fading conditions and in the presence of interference
[ Hits: 396 | Votes: 0 | Rating: 0.00 ]
- PACTOR can be viewed as a combination of two earlier digital modes, packet radio and AMateur Teleprinting Over Radio (AMTOR). PACTOR provides improved throughput because its transmission speed adapts to the quality of the link and it uses Huffman compressed characters.
[ Hits: 553 | Votes: 0 | Rating: 0.00 ]
- 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: 525 | 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: 734 | Votes: 2 | Rating: 10.00 ]
- 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: 1291 | Votes: 1 | Rating: 10.00 ]
- DRM mode Ham specifications
- This document describes the DIFFERENCE of mode HAM to the official broadcast DRM standard
[ Hits: 1168 | Votes: 0 | Rating: 0.00 ]
- 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: 14195 | Votes: 17 | Rating: 8.82 ]
- 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: 1579 | Votes: 1 | Rating: 5.00 ]
- Yaesu FT-857 description
- FT-857 HF/50/144/430 MHz ALL MODE HF/VHF/UHF Transceiver
[ Hits: 957 | Votes: 1 | Rating: 1.00 ]
- 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: 775 | Votes: 0 | Rating: 0.00 ]
- 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: 4112 | Votes: 7 | Rating: 3.29 ]
- 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: 2338 | Votes: 5 | Rating: 7.20 ]
- 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: 827 | Votes: 5 | Rating: 6.80 ]
- 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: 6402 | Votes: 0 | Rating: 0.00 ]
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