power of 3

93 links

Discovery Power Amplifiers - The Discovery series of amplifiers are designed and built in the UK by Linear Amp UK Ltd, one of the world's leading amplifier manufacturers, specializing in high power RF tube amplifiers. The amplifiers use large GS31 or GS35 ceramic triode tubes. Band coverage 6m, 2m and 70 cms
[ Hits: 3038 | Votes: 2 | Rating: 4 ]
Comtechpst.com - High Power RF Amps - Comtech PST offers solid-state power amplifiers in frequency ranges from 1 MHz through 3.6 GHz, with output power levels ranging from 5 watts to over 30 kW
[ Hits: 3174 | Votes: 3 | Rating: 7.33 ]

RF HAMDESIGN - An engineering oriented organization specializing in the design and manufacture of high performance parabolic antennas, 3dB high power RF couplers, Antenna power splitters, directional RF couplers and more items for RF transmission from HF through Microwave frequencies.
[ Hits: 1616 | Votes: 5 | Rating: 9 ]

Low Power Radio and Broadcast Company - Manufacturers of high performance low power am transmitter products: sstran amt3000, bc-100, and the mw-250. for home and professional use.
[ Hits: 2733 | Votes: 1 | Rating: 5 ]

NPR New Packet Radio - IP over 430 MHz - NPR (New Packet Radio) is a custom amateur radio digital protocol, designed by F4HDK to transport bidirectional IP trafic over radio links on the 70cm band. This IP protocol is optimized for point-to-multipoint topology, with the help of managed-TDMA. Bitrate is up to 500kbps. Home Made modem has a built-in ethernet port to connect to PC. To boost power a DMR amplifier is required to reach 20W. This project is an extension of HSMM - Hamnet - AREDN networks
[ Hits: 151 | Votes: 0 | Rating: 0 ]

A low power 3.5MHz ARDF transmitter - This low power transmitter is developed for ARDF exercising purposes but of course can be used as super QRP transmitter either. With 1 or 2 meter wire as antenna and a ARDF receiver with ferrite-rod antenna the range is about 100m but with better antennas and a 'real' receiver the range is probably much larger.
[ Hits: 2043 | Votes: 4 | Rating: 6.5 ]

Yaesu FT-8900r Review - A review of the Yaesu FT-8900r 29/50/144/430 MHz FM Transceiver, providing 50 Watts of power output on the 29/50/144 MHz Amateur bands, and 35 Watts on the 430 MHz band.
[ Hits: 245 | Votes: 1 | Rating: 7 ]

Rebuilt Power Vacuum Tubes - ECONCO has been rebuilding vacuum tubes for more than 30 years. Our commitment to quality, and concern for the environment has won us the acclaim of clients worldwide.
[ Hits: 894 | Votes: 0 | Rating: 0 ]

Nec2Go - Powerful antenna modeling tool using NEC 2 computing engine. Nec2 specifically provide users, either those experienced with the Nec2 processes, or for those who are neophytes but want to model their own antennas. Nec2Go uses a simplified process for defining the antenna structure and then providing view of the structure, plots (2D and 3D) and other significant data that is pertinent to the design. This simplified process uses an edit file with equations for all definitions.
[ Hits: 1953 | Votes: 1 | Rating: 5 ]

Frequency Manager - Database system with 60000 frequencies, powerfull 3D MUF/LUF-propagtion software and full copntrol of several receivers
[ Hits: 6531 | Votes: 17 | Rating: 4.65 ]

Ham Log - Ham Log is an easy to use yet powerful QSO logging utility for all devices running Palm OS. Ham Log's design and functionality was designed to meet my needs when mobile and away from my home station.
[ Hits: 1085 | Votes: 0 | Rating: 0 ]

AALog by RZ4AG - AALog is a comprehensive logger program designed for amateur radio station operators. QRZ,Buckmaster,Flying Horse lookup, CW/RTTY/PSK31 support, Digital voice processor. DXCC,WAZ,P75P,WAS,JCC,WAJA,WAIP,IOTA,Russia tracking. Many other useful features. eQSL.cc compatible. It look like your paper log and use all power your PC
[ Hits: 10451 | Votes: 790 | Rating: 7.47 ]
CQ Log - CQLog is a powerful logging program for Windows. It provides a comprehensive control centre for everyday on-the-air activities, including: full-featured logging of QSOs; statistics for many awards (for LoTW and eQSL capability); support for QRZ, RAC, GOLIST databases. You can save up to 3 pictures for each SSTV-QSO. Two-way data exchange with MixW2, and DigiPan. Integrates with DX Atlas. Real-time upload of QSOs to eQSL.cc. The program also offers a "contest-mode"; supports CAT systems for YAESU, ICOM, KENWOOD, Ten-Tec. Prints QSL cards, and QSL labels, addresses envelopes.
[ Hits: 15490 | Votes: 129 | Rating: 7.7 ]

PSK31 Deluxe ^pop - PSK31 Deluxe is a PSK31 and PSK63 program for novices and power users. It has been replaced by Digital Master 780 and is now a legacy product. The last version of PSK31 Deluxe was shipped with the HRD 4.0 SP4 kit and is no more availabe and supported.
[ Hits: 25873 | Votes: 61 | Rating: 6.44 ]

Ameritron AL-80A modification - W7TDC modification of the Ameritron AL-80A power amplifier
[ Hits: 11055 | Votes: 19 | Rating: 6.52 ]

2 m. Band VHF PA 5 Watts - A VHF power amplifier made with two cheap RF transistors, 2N3924 as driver and a BFS22A for final stage, giving an unexpected output power of 7-8 watts maximum
[ Hits: 1984 | Votes: 1 | Rating: 10 ]

10 Amp 13.8 Volt Power Supply - Sometimes amateurs like to home-brew their power supplies instead of purchasing one off the shelf at any of the major ham radio retail dealers.
[ Hits: 1934 | Votes: 3 | Rating: 9.67 ]

Variable regulated power supply - 1.2-30V 1.5A variable regulated power supply
[ Hits: 2575 | Votes: 3 | Rating: 5 ]
15 A from a PC Power Supply - 13.8 V 15A from a PC power supply
[ Hits: 13066 | Votes: 11 | Rating: 6.37 ]

A CW TX for 80 meters band - This simple circuit will give about 1.2 Watts of output when powered from a 13.8VDC supply.
[ Hits: 1733 | Votes: 1 | Rating: 10 ]