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Query: qsl
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A portable 4 elements quad antenna for 144 MHz, 9 to 10 DBd forward gain, 30 DB front-to-back ratio, and 33 DB front-to-side ratio -
This antenna consists of 4 resonate dipoles made from 12 insulated copper electrical wire. The dipoles are resonate on the following bands: 6 meters, 10 meters, 12 meters and 17 meters. -
Useful data-sheet on RG coax cables compiled by NA5N -
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Produce QSL & post cards, stickers, ID cards, calendars, certificates, awards, membership applications, log and call-books, rubber stamps,T-shirts, brochures, advertising materials. -
A magnetic loop made just of wire. Suitable for portable usage and for QRP operations. -
A Quadrifilar Helix Antenna for 137 MHz By George Goodroe, KF4CPJ -
Calculate Cable Loss from SWR and reverse. Text file with only two simply formulas -
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SSTV on Mac is possible using MultiScan 3 B is an application for Ham Radio Slow Scan TV (SSTV) Communications. It is build to run on Mac OS X 10.6 or later versions. MultiScan 3B can transmit and receive pictures in the following formats (modes): Robot black Robot Color Socttie Martin, PD Modes:P Modes: P3, P5 and P7 AVT All modes can be send/received in regular, narrow, QRM and narrow+QRM modes -
Here is an easy method to mount elements to a boom, this can be realized at home, without the need of special tools -
A pdf file with schematics of an ssb and cw filter AF amplifier -
Yaesu MD-100 microphone schematic wire diagram with pin out -
W3DZZ trapped multi-band antenna, exposed in this practical wireless article -
Projects and design atv de ik1hgi Progetti, circuits, master, fotos in Italian -
Yaesu FT-1000 review edited by G3CWI -
Very compact and high efficiency antenna ,very low radiation angle even at low height. -
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Labview-based Morse code Program. Send and Receive both CW and CCW run under windows. -
This free program by SP7DQR is designed to print QSL Cards using Mail Merge Tool in MS Word from ADIF file. -
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Generate QSL cards and labels in your own format. Donationware, windows program by Alpine software officially released for windows XP. -
Diagram and sample ferrite balaun for 1.8-30 MHz -
This is a compact three transistor regenerative general coverage receiver with fixed feedback -
G4PDQ's PacketCluster routines to make PacketCluster a little more interesting for the user and a little easier for the SysOp -
This webpage describe how to set up the Signalink USB interface and Yaesu FT-857D for digital operations by NA4IT -
Homebrew antenna insulators for DK7ZB yagi antennas -
On line qsl route and manager addresses by ik3qar -
Amplifier keying buffer for ICOM radios & others. Suitable for IC-746 IC-756 PRO and PROII. ACC1 key interface by KK5DR -
A reliable logging system for Field Day based on wireless networking. Freeware, runs on macintosh, linux and windows -
1 watt amplifier for 10 ghz made from surplus stuff -
English version of the Yaesu FT-7800 operating manual -
Two Versions of 5 elements stacked 25 Ohm Yagis with 1,80 m and 2,00 m Boom -
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. -
Contains digimodes, antenna projects, DX info and lots more -
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Computes the Standing Wave Ratio, given the power readings on a line. -
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VU3NSH article on high current universal supply for rigs -
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Supports both PSK31 and PSK63, sends and receives color thumbnail portraits by PSK63, displays 24 PSK63 channels simultaneously, and features semi-automatic mode selection between PSK63 and PSK31. Merely left-click on a PSK63 signal to copy, or right-click on a PSK31 signal to copy. -
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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 -
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LZ2US offers 3 types amplifiers for the serious VHF/UHF amateur. These amplifiers are very robust and in use by contest groups and EME stations all over the world. Every amplifier is custom made. -
A MRF141G 3-175MHz Broadband Power Amplifier DL4MEA 02/1998 -
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Club information, photos, utilities, links and repeater list. In Spanish -
