Search Results for "digital frequenc"35 links
Internet and Radio : Sounds
- Digital Operating Modes
- Description, frequencies and sound samples of most popular amateur radio digital modes by DG8FBV
[ Hits: 908 | Votes: 4 | Rating: 8.00 ]
- DCI Digital Communications
- Band pass filters, for radio frequency interference problems.
[ Hits: 468 | Votes: 0 | Rating: 0.00 ]
- AOR U.S.A., INC.
- Aor u.s.a web site, manufacturer of base and mobile receivers, handheld receivers, digital voice modems, spectrum display units, frequency monitors and antennas
[ Hits: 1741 | Votes: 7 | Rating: 5.14 ]
- Digital Smart Antennas DiSA
- Digital Smart antenna (DiSA) Automatically Adjusts over a wide band of frequencies.
[ Hits: 736 | Votes: 2 | Rating: 5.50 ]
- A & A Engineering
- Smart Battery Chargers, WeatherFAX, Color SSTV,GPS-Based Frequency Standard, Power/SWR Meter,
, Digital Frequency Synthesizers
[ Hits: 1449 | Votes: 1 | Rating: 1.00 ]
- N3ZI Kits
- Low Cost Frequency Counter, Digital Display and DDS-VFO kits
[ Hits: 1746 | Votes: 5 | Rating: 5.40 ]
- Keithley Instruments Inc.
- Digital multimeters, power supplies, frequency counters, RF analyzers, signal generators
[ Hits: 442 | Votes: 0 | Rating: 0.00 ]
- EADS North America Defense Test
- Digital multimeters and frequency counters.
[ Hits: 234 | Votes: 0 | Rating: 0.00 ]
- Victor Electronics
- Accredited oscilloscope manufacturer for over 20 years produce digital oscilloscope, multimeters, frequency counters
[ Hits: 672 | Votes: 0 | Rating: 0.00 ]
- Signal Forge
- The signal forge 1000 signal generator is a portable, high-performance digital and rf signal source with a 1 ghz frequency range. features include digital, differential and ac coupled outputs
[ Hits: 414 | Votes: 0 | Rating: 0.00 ]
- BK Precision
- Power supplies, electrical testers, battery analyzers, cable tester, rf generators, spectrum analyzers, Digital/Analog Oscilloscopes, Multimeters , attenuators, frequency counter
[ Hits: 1885 | Votes: 0 | Rating: 0.00 ]
- RFSM-2400 Digital Mode
- A recent digital radio protocol. Based on a freeware soundcard-based Radio Frequency Software Modem.
Work under standart MIL-STD-188-110A. Maximum speed 2400 bit/second. Signal bandwidth: 0,3-3,3 kHz (standard mode) and 0,3-2,7 kHz (non-standard mode).
[ Hits: 3405 | Votes: 17 | Rating: 5.88 ]
- Frequencies for using digital modes
- These frequencies are to be used as a guide to find the related signals. They have come from several sources, and are, in no way, guaranteed to be complete, accurate, or inclusive.
[ Hits: 1000 | Votes: 1 | Rating: 1.00 ]
- Digital Modes Samples
- Audio files of many digital modes. Many were recorded in the HF bands an most others are found on VHF/UHF frequencies.
[ Hits: 1565 | Votes: 1 | Rating: 10.00 ]
- Recommended frequencies for digital modes
- Active digital mode frequency list compiled by Jason Buchanan - N1SU
[ Hits: 3488 | Votes: 4 | Rating: 5.50 ]
- Clover technical specifications, digital communications mode that conveys 8-bit digital data over narrow-band high-frequency radio.
[ Hits: 715 | Votes: 1 | Rating: 10.00 ]
- FDMDV - Digital Voice
- FDMDV - Frequency Division Multiplex Digital Voice
Digital Audio over HF SSB.
FDMDV is the latest digital voice mode on HF - it caters to high quality digital voice under poor band conditions, in only 1100Hz bandwidth
[ Hits: 4733 | Votes: 6 | Rating: 7.83 ]
- Olivia, the Magic Digital Mode
- Olivia MFSK digital communications are becoming popular in amateur radio because Olivia is one of the most robust methods of text keyboarding, that can perform superbly for long distance communications. Olivia frequencies, format and software
[ Hits: 1671 | Votes: 8 | Rating: 8.38 ]
- Mixed-Mode Operation on Voice Repeaters
- Mixed-mode operation, where voice and digital transmissions are used in turn on the same frequency
[ Hits: 596 | Votes: 0 | Rating: 0.00 ]
- Digital satellites Frequency site
[ Hits: 4804 | Votes: 43 | Rating: 6.40 ]
- Scanner-radios picking the right scanner
- There was a time that scanning was easy. There were no trunked radio links and no digital radios. There was no encryption with frequency hopping to drivge us scanner radio-operators nuts. And there were no laws at one time telling us what we can scan and what we can not scan.
Fortunately even with the above scanning is still a fun hobby.
[ Hits: 2910 | Votes: 1 | Rating: 10.00 ]
- Software for imitation digital radio-signals: ASK, FSK, BPSK, QPSK, variable speed, any frequency
[ Hits: 1833 | Votes: 2 | Rating: 5.50 ]
- WD6CNF DSP Filter
- Audio Digital Filter, two bandpass filters, three notch filters, two noise filters
graphical setting of filter center frequency and bandwidth Drag vertical lines on top of signal,
Microphone input, speaker output
Mono, 5 kHz bandwidth
[ Hits: 4453 | Votes: 2 | Rating: 10.00 ]
- Spectrum Analyzer Real-time FFT
- Eight-channel Audio Spectrum Analyzer is a set of Real-Time Multi-Channel Gauges for investigation of data accepted from any ADC you will want or 16-, 24- and 32-bit ADC of sound card. WDM drivers support. FFT Spectrum Analysis, OscilloScope, Frequency counter, AC/DC voltmeter, Signal-to-Noise Ratio, Signal-to-Noise and Distortion, Spurious-Free Dynamic Range, Effective Number Of Bits, Total Harmonic Distortion, Inter-Modulation Distortion, Phase Shift. Special modes of dual-channel FFT spectral analysis: Separate channels spectra, Spectra of digital sum, difference, product of two signals, Spectrum of digital product of original signal and its fundamental, Spectrum of Real and Complex Transfer Function, Cross Spectrum. Standart weighing of spectra according IEC and CCIR. Oscilloscope modes (for dual-channel ADC) are: original signals, sum, difference, dependence of one channel on another, amplitude distribution of input signals.
[ Hits: 10658 | Votes: 9 | Rating: 7.77 ]
- Interdigital bandpass filter designer
- Fill out the form to design a bandpass filter as described in the January 1985 issue of Ham Radio Magazine. These filters are generally limited to frequencies above 200 MHZ because their size is slightly longer than 1/4 wavelength
[ Hits: 851 | Votes: 5 | Rating: 8.20 ]