hf filter design
5 links
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: 2769 | Votes: 4 | Rating: 4.25 ]
- HamCalc v1.3
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- HamCalc is a free collection of calculators for radio amateurs include 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, Radio Horizon calculator, Resonance Satellite orbit calculator Timer calculations (555 timer)Zener Diode calculations Download zip By G4VWL
[ Hits: 28818 | Votes: 114 | Rating: 5.57 ]
- Zeus Radio - Software Defined Radio
- Zeus Radio program is designed specifically
for the ZS-1 transceiver and supports all the
basic functions (RIT, XIT, SPLIT, Noise Reduction,
Auto Notch Filter, etc.) in order to work
in the broadcast brought only pleasure.
Zeus Radio works also with Hermes, Anan, Afedri, Red Pitaya, HiQSDR, Odyssey, Extio, RTL-SDR, Peaberry, Winradio, SDR-IQ, Afedri
[ Hits: 505 | Votes: 1 | Rating: 8 ]
- Arduino QRP Transceiver: DIY Success on HF Bands
- This article introduces an Arduino-based QRP CW Transceiver designed for lower HF bands. The journey begins with the Wotduino, evolving from a keyer to a multi-mode beacon. The development includes a QRP transmitter and culminates in a receiver inspired by Roy Lewallen design. The transceiver, controlled through a control bus features a signal path, modulation, filtering, and adjustable frequency settings. Despite initial testing intentions, successful QSOs on 80 and 40 meters showcase its functional capabilities.
[ Hits: 104 | Votes: 1 | Rating: 1 ]
- 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: 8611 | Votes: 16 | Rating: 5.88 ]
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