micro491 links - and 13 categories
Antennas : Helical
- Helical Feed Antennas
- Helical antennas have long been popular in applications from VHF to
microwaves requiring circular polarization, since they have the unique
property of naturally providing circularly polarized radiation. Paul Wade W1GHZ
[ Hits: 1609 | Votes: 2 | Rating: 3.00 ]
- Patch antenna for APT
- The patch, or microstrip, antenna has become a common workhorse for the microwave spectrum from about 1 GHz to tens of GHz.
This type of antenna consists of two conducting layers separated by a dielectric to form an
extended capacitor by WlHDX
[ Hits: 1072 | Votes: 1 | Rating: 10.00 ]
- Loop Antenna Basics
- Loop Antenna Basics and Regulatory Compliance for Short-Range Radio
[ Hits: 669 | Votes: 0 | Rating: 0.00 ]
- ZL1BPU Rotator Controller
- A very simple controller circuit, with fairly smart performance!
The ZL1BPU Rotator Controller has been designed as an add-on unit for the popular Kenpro KR-400 and Yaesu G-400 rotators. The controller consists of a small circuit board which fits inside the rotator control box (see picture).
[ Hits: 2751 | Votes: 3 | Rating: 4.00 ]
- The EZ-Tuner
- The "EZ-Tuner" is a homebrew automatic legal-limit antenna tuner that covers all amateur HF bands from 160-10 meters. Using a T-network design and controlled by a BASIC Stamp BS2sx microcontroller, the EZ-Tuner will match at least a 16:1 VSWR for either unbalanced or balanced transmission lines.
[ Hits: 5325 | Votes: 1 | Rating: 9.00 ]
- V6 DX-pedition 2007
- Six members of the Japan Amateur Radio League (JARL) Kyoto Club, made a DX-pedition to the Federated Stetes of Micronesia (FSM) in summer 2007. This was one of the events celebrating our club's 60th anniversary.
IOTA: OC-010 (Pohnpei Islands)
[ Hits: 203 | Votes: 0 | Rating: 0.00 ]
- British Columbia FM Communications Association
- Amateur Radio organization specializing in VHF, UHF, and microwave communications.
[ Hits: 574 | Votes: 1 | Rating: 10.00 ]
- W5HN North Texas Microwave Society
- Dedicated to Promoting Activity, the State of the Art in Equipment Design, and the Exchange of Ideas and Technology for the Amateur Bands Above 902 MHz
[ Hits: 313 | Votes: 1 | Rating: 10.00 ]
- An APRS-compatible Ham Radio Weather Station
[ Hits: 569 | Votes: 0 | Rating: 0.00 ]
- Cumbria Designs
- Quality electronic kits, transceiver display, Minicounters, VFO Stabiliser, Microcode Morse Reader
[ Hits: 2668 | Votes: 2 | Rating: 10.00 ]
- Manufacture high quality low cost powder cores with a wide selection of shapes
[ Hits: 491 | Votes: 0 | Rating: 0.00 ]
- Maxdao Technologies
- Maxdao: offer you 7/16, N coaxial connectors, jumper cables, feeder clamps and grouding kits, surge arresters & brackets, wall entries and microwave components used in base tower, power dividers, couplers
[ Hits: 438 | Votes: 1 | Rating: 10.00 ]
- Unified Microsystems
- W9XT contest card DVK Digital Voice Keyer, morse keyers CW memory keyer, beacon CQ IDer, USB interfaces and more for ham radio operators
[ Hits: 4602 | Votes: 2 | Rating: 5.00 ]
- Micro908 Kit
- A re-usable control & computing platform for
antenna measurement, PSK31 digital modems, audio filtering, signal source & VFO, memory keyer by AMQRP
[ Hits: 1401 | Votes: 1 | Rating: 10.00 ]
- Broadband instruments, R and microwave components and filters, field analyzers, spectrum analyzers
[ Hits: 428 | Votes: 0 | Rating: 0.00 ]
- The Yaesu MD-100A8X
- Yaesu MD-100 A8X desktop dynamic microphone review by G3NGD
[ Hits: 153 | Votes: 2 | Rating: 7.50 ]
- LP-Rotor 2.0 is a standalone freeware rotator control program for use with Microsoft Windows. LP-Rotor should work with all versions of Windows from Windows 95 forward. It is designed to be used with the Hy-Gain DCU-1 or RotorEZ interfaces for Hy-Gain rotators, or the RotorCard interface for Yaesu rotators.
[ Hits: 4023 | Votes: 3 | Rating: 7.00 ]
- Audio processor for SSB transceiver
- This circuit consists of microphone amplifier and a high pass filter. Suitable to improve signal readability.
[ Hits: 1295 | Votes: 1 | Rating: 1.00 ]
- Inductor Design Software - RF toroid
- A free too designed to assist in the selection of iron and alloy powder cores.
RF toroid calculate the location of the Self resonate frequencies for series and shunt inductors.
[ Hits: 5208 | Votes: 43 | Rating: 4.58 ]
- Home Brew a Condenser Microphone
- An inexpensive condenser microphone with excellent performance can be easily constructed with easily available parts.
[ Hits: 1742 | Votes: 2 | Rating: 5.50 ]
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