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Antennas Internet and Radio : Auctions
- Joe Tracker Ham Radio eBay Auction Price Tracker
- Ham radio equipment eBay prices, adjusted for trends, filtered for accessories, leaving only condition and auction terms to affect the final price. Also direct links to auctions, searches and recommended sites for research, plus amateur radio station rigs, projects and antenna farm.
[Hits: 700 | Votes: 3 | Rate: 9.67] Manufacturers : Amplifiers
- RFAC Solutions
- RF Connectors Cable Assembly Attenuators Filters High Power VHF Amplifiers, Adapters MMCX MCX SMA SMB SMC BNC TNC N from RFAC Solutions
[Hits: 957 | Votes: 3 | Rate: 9.00] Manufacturers : Antenna Analyzers
- Array Solutions - WX0B
- Stacking and phasing HF and 6m arrays antenna switches and contesting devices. Custom low band antenna arrays, bandpass filters,commercial/Mil STd filters,microwave components, commercial broadcast filters.
[Hits: 4537 | Votes: 7 | Rate: 7.14] Manufacturers : Antennas : VHF UHF Microwave : Satellite antennas
- PROCOM Antennas
- Manufacturer of communications antennas, bandpass filters, RF combiners, receiver multicouplers, diplexers, duplexers, RF connectors, RF circulators, RF isolators, RF couplers and SWR meters
[Hits: 4513 | Votes: 6 | Rate: 6.00] Manufacturers : Digital and Packet Radio
- Communication Concepts, Inc.
- Provide components to the amateur who wants to construct their own gear and to the professional who wants to save money and time in prototyping their circuit design, Filters, HF Amplifiers, Splitter Combiners, VHF Amplifiers, ATV
[Hits: 1775 | Votes: 3 | Rate: 5.33] Manufacturers : QRP Kits
- Micro908 Kit
- A re-usable control & computing platform for
antenna measurement, PSK31 digital modems, audio filtering, signal source & VFO, memory keyer by AMQRP
[Hits: 975 | Votes: 0 | Rate: 0.00] Manufacturers : SWR Meters
- AEA
- AEA Technology Inc. is a pioneer and leading manufacturer of RF and cable test equipment for the wireless, Telco, CATV, NMR & MRI, RFID, telemetry, aviation, commercial, military, and two-way radio industries. Produces SWR Meters, Pre Amplifiers, filters, power meters and antenna testing products
[Hits: 4835 | Votes: 8 | Rate: 4.50] Operating Modes : Amateur Television
- UHF Reject filter
- This filter is a 0.1 dB Tschebychev lowpass with a rejection of 90 dB
or better at 430 MHz, and 0.2 dB insertion loss at 72 MHz.
[Hits: 882 | Votes: 1 | Rate: 10.00] Operating Modes : PSK31
- Adjusting Filters for PSK31
- Screen shots of what happens when you do and don't get it right. By Dick Stevens, N1RCT, a very clear, helpfull and comprehensive document.
[Hits: 1482 | Votes: 2 | Rate: 5.50] Operating Modes : Satellites Radio Equipment : HF Transceivers : Yaesu FT-857
- Installing the FT-857 options
- Installing The FT-857 Options by Dave Fifield AD6A March 2003, some photos showing the procedure to install the optional filters (and a few showing off the color display), TXCO-9 and DSP-2 to the Yaesu FT-857 rig.
[Hits: 2664 | Votes: 1 | Rate: 1.00] Shopping and Services : Electronic Components
- All American
- Distributor of electronic components, ull range of semiconductors (active components), including relays, circuit breakers, transistors, diodes, memory devices, microprocessors, microcontrollers, and other integrated cuircuits, as well as passive components, such as capacitors, resistors, inductors, and electromechanical products, including cable, switches, connectors, filters, and sockets.
[Hits: 603 | Votes: 0 | Rate: 0.00] Shopping and Services : Regional : Europe : Italy
- Mr Seven Telecomunicazioni
- Italian dealer for steppir, buddipole, force12, mosley diamond yaesu antennas, mfj ldg products, rotors filters microphones keyers and more accessories
[Hits: 440 | Votes: 0 | Rate: 0.00] Software : Antenna analysis
- HamCalc v1.3
updated
- By G4VWL, HamCalc is collection of calculators for radio amateurs: Antenna ERP calculations.
Attenuators. Audio Filter design.Coil Winding.
Decibels. Great Circles map and calculator HF Filters HF Traps Metric conversions OP Amps
QRA Locator to Latitude/Longitude (and back)
Radio Horizon calculator Resonance Satellite orbit calculator Timer calculations (555 timer)Zener Diode calculations
[Hits: 13811 | Votes: 52 | Rate: 4.06] Software : Circuit Design
- Elsie - Filter Design
- Filter design software. Elsie is an uncommon commercial-grade lumped-element ("L-C") electrical filter design and network analysis program, directed toward the engineer or technician involved in that line of work.
[Hits: 1883 | Votes: 3 | Rate: 10.00] Software : DSP
- FreqTweak
- FreqTweak is a tool for FFT-based realtime audio spectral manipulation and display for Linux. It provides several algorithms for processing audio data in the frequency domain and a highly interactive GUI to manipulate the associated filters for each. It also provides high-resolution spectral displays in the form of scrolling-raster spectrograms and energy vs frequency plots displaying both pre- and post-processed spectra.
[Hits: 879 | Votes: 3 | Rate: 9.00] Technical Reference : Duplexers
- A low cost UHF/VHF duplexer
- Duplexers for dual band radio are usually high pass filter and low pass filter combined in the same box. This circuit is a design within a cost of US$10.
[Hits: 4244 | Votes: 6 | Rate: 6.17] Technical Reference : Filters
- Lowpass filter for 5MHz
- The following lowpass filter was built using the tables in the arrl manual, it is a 5 section one and seems to work ok
[Hits: 94 | Votes: 0 | Rate: 0.00] - A low pass filter circuit
- A simple 7 element, Chebyshev low pass filter, rolls of at 30MHz. Attenuation is better than -40dB at 60MHz, -65dB at 90MHz, -80dB at 120MHz.
[Hits: 3019 | Votes: 7 | Rate: 6.85] - The NVARC Ugly Filter Project
- Project to build sets of band pass transmitting filters for reducing the interference between HF transceivers operated in close proximity
[Hits: 640 | Votes: 3 | Rate: 9.33] Technical Reference : HF Radios
- Hombrewing an HF Transceiver
- This page will describe the construction of a multi band SSB transceiver with all its components Band Pass Filter, Oscillator/Modulator unit, RX/TX Mixer TX Amp I.F. Amplifier AGC VFO Driver amplifier Receive audio amplifier Final amplifier Low pass filter Digital display and VFO stabiliser
[Hits: 3563 | Votes: 6 | Rate: 8.33] Technical Reference : Homebrew
- 7 MHz SSB Transceiver
pop
- Circuit diagram and discription of 7 MHz Ham Radio SSB Transceiver. Transceiver using two MC1496, 4.43 MHz Ladder filter, LM386, LM324 and IRF840 in final.
[Hits: 16461 | Votes: 34 | Rate: 6.97] - Ham Radio Circuits
pop
- Circuits of SSB Transceiver, AM DSB Transmitter, Antennas, BFO, VFO, 807, FM Mike, Crystal filter and more.
[Hits: 31500 | Votes: 44 | Rate: 5.46] Technical Reference : Radio Frequency Interference
- Filters and Ferrites in EMC
- This article is about the characteristics and use of various filters and ferrites for solving amateur radio electromagnetic compatibility problems involving breakthrough of amateur signals into domestic equipment such as television sets, video recorders stereo sytems etc.
[Hits: 595 | Votes: 0 | Rate: 0.00]
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