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Query: EME
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Pictures of a 2 element cubex Quad antenna at a height of 10 meter -
DF3CB site, contesting, and software BV is a professional freeware software for the QSL Management and Label/QSL Printing under Windows developed and distributed by Bernd Koch, DF3CB, since 1989. It is mainly designed for the contester and QSL manager with high QSL quantities but useful for all other QSL'ing purposes as well. Includes logging features -
How to improve the gain of your 5 element Tonna yagi for 50 MHz by roughly 3 db! -
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Moon bounce EME, meteor scatter and weak signal operations, introduction by ARRL. -
The ICOM 746-Pro has acquired a history of NEC 1678G (IC-151) MMIC and driver transistor 2SK2975 failures. The failure of IC-151 appears to be a combination of ESD damage from electrostatic charge on the antenna entering IC-151, and perhaps thermal heat. -
Baofeng UV-5R extreme Receive Modification -
A three element wire yagi antenna for 7 MHz project plan with drawings and EZNEC model -
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 -
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Project plan for a 4 element yagi beam for 50 Mhz -
VA3EXT 5 element beam antenna for 6 meters band -
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Here is an easy method to mount elements to a boom, this can be realized at home, without the need of special tools -
Lan-Link and Lan-Link for Windows. Other software by G3ZCZ. Some of G3ZCZ's conference papers on amateur radio, and AMSAT editorials -
An old project by I1VCF for a 3 element yagi antenna originally designed for 10/15/20 and extended to 24 and 18 Mhz in Italian -
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The Assyrian Democratic Movement also known as ZOWAA . This political organisation is aiming to bring freedom and democracy to Iraq. -
Slot antenna and complementary dipole -
A five element quad antenna for 144 MHz DIY Project. This 2 Meter 5 Element Quad antenna was modeled using EZNEC, with a boom from a UHF TV antenna and CPVC pipe for spreaders. Constructed for 146MHz, it exhibits a gain of 10.7dB and an impedance of 75 ohms. Real-world results surpass the HT antenna, reaching over 20 repeaters up to 75 miles away. The design, costing around $10, employs simple tools for assembly. -
Various publications through the years have shown how the SWR measured on a shorted (or open) feed line can be used to calculate feed line attenuation -
This article summarizes probably the most extensive numerical modelling calculations on the helical antenna ever performed. -
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A 4 element Wire Yagi antenna design for the 40 meters band -
What to have before you go. -
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Christoph petermann's df9cy six element yagi antenna for six meter band -
A 3 element yagi antenna project for the 144 MHz band by PY5ALZ in portuguese -
On this page is the design for Dual Band 2M / 70cm antenna with 3.2mm elements. The antenna has a 50 ohm designed driver. This Yagi has a unique element called a Open Sleeve -
Construction details and tests about a 2 elements cubical quad antenna for HF Bands (20,17,15,12 and 10m band). -
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RADIOING eEngineer RFI EMI information -
A project for a home made 5 element yagi-uda antenna for 2 meters, covering 144-148 MHz band by N1BMX -
Original drawing and design of a 4 and 7 elements yagi antenna for 50 Mhz -
The Sarasota Emergency Radio Club, is an Amateur (Ham) Radio club in Sarasota, Florida, dedicated to provide emergency and public service communications. -
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This manual provides the technical necessary for servicing the VX-6R Yaesu Transceiver -
This article provides a basis to brew your own emergency power pack depending on your needs and tastes. -
DJ-X3 Memory Management Utility - Edit Memory Bank channels (700). Upload / Download, Load / Save Memory Bank channel data, Full / Partial Reset of radio. -
This article document a 2 element half wave collinear J-Pole antenna by KC9EOT and KB8OJH -
LIVE 911 audio of the Chicago Fire Department North & South channels. -
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A DIY project of a WiFi 10 elements Yagi antenna -
When experimenting on an antenna it's often important to determine its feedpoint impedance at various frequencies across the operating band. It's easy enough to measure SWR, but sometimes we need to know more detail than this -
A 70cm and 2m 6 elements yagi antenna plan based on the IEEE Transactions on Antennas and Propagation -
This Artificial Ground has been designed by Colyn Baillie-Searle GD4EIRP -
Rotator Controller Using Arduino and PstRotator project by G4HSK -
This article explores the claim an amplifier might arc from a parasitic oscillation, damaging capacitors, bandswitches, or other components. -
EME system by F1EHN is a software suited for EME operation, traffic procedures in real time -
A Loop Fed Array Yagi antenna for 50 MHz featuring 11 dBi gain and 23 f/b ratio. In this excellent page the author even includes a detailed drawing in DWG format, with element lenght and spacing measures, in a separa file a full list of material list needed to build this yagi antenna including source and price, the EZnec file for this antenna plan, and a lot of pictures of this LFA Yagi for 50 Mhz. A ten page PDF file containing all infos, is also available to download.