- Multi-Polarized antennas for Land Mobile Radio, Indoor & Outdoor Networks, Home Wireless, Mining Communications, Remote Monitoring, HAM & Scanner, Cellular, WiFi, Wimax, M2M, GPS, LTE, and GSM.
- Voldatech Telecommunication & Networking Solutions, RF Coax cables and connectors manufacturer based in China
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- Pro-Link products, coax cable manufacturer specialize in a comprehensive range of Fibre Optic Cables, 50ohm and 75ohm Coaxial Cables, RF Cables, 10Base-T Cables, Connectors and Networking Products
ATN The Amateur Television Network
- Fast Scan Amateur Television in Alabama, Arizona, Northern California
Southern California, Georga, Illinois, Indiana, Kentucky, New Mexico, Nevada,
Texas, Washington, Delaware, Maryland, New Jersey, and Pennsylvania
D-STAR Hot Spot
- D-STAR Hot Spot is software for Windows that creates a D-STAR 'point of presence' (or hot spot) utilizing an analog radio and a GMSK node adapter. The hot spot creates RF access to the D-STAR network where none previously existed
iRFC for iPhone
- IRFC offers a full Radio Frequency Calculator on the go for network impedance adaptation with smith chart
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- DxSpot is your mobile access into the Amateur Radio DX cluster network. With DxSpot you can connect to the DX cluster of your choice. The internal database supplies the connection parameters to over 300 DX clusters. Once connected enjoy formatted table views of DX spots, DXCC information, connected users, cluster announcements, colorized WWV propagation data, and keep current with the latest DX news.
Using cheap tetrodes in amplifiers
- This article is written to dispel some of the misconceptions and misunderstandings about some of the tetrode based linear amplifiers, which are currently available on the amateur market.