Understanding Circular Waveguide—Experimentally

Multiple Reflector Dish Antennas - W1GHZ.org

Multiple Reflector Dish Antennas Paul Wade W1GHZ ©2004 w1ghz@arrl.net Introduction A dish antenna with multiple reflectors, like the Cassegrain antenna at OH2AUE1 in Figure

  Dish, Multiple, Antenna, Reflector, Multiple reflector dish antennas

A UHF+ Bridge - W1GHZ.org

A UHF+ VSWR Bridge Being able to measure VSWR at UHF and microwave fteguencies can aid those homebrew projects H ams frequently need to mea- sure VSWR. This is para- mount for antennas, as it is the only parameter conveniently mea-

  Bridge, A uhf bridge

Helical Feed Antennas - W1GHZ.org domain page

Helical Feed Antennas ... gain is required than can be provided by a helical antenna alone, ... W8JK, is the originator of the helical-beam antenna; as he puts it ...

  Feed, Beam, Antenna, Helical, Beam antenna, Helical feed antennas

Waveguide Filters You Can Build - and Tune

I did a bit of simulation using Ansoft6 HFSS electromagnetic software, then built a couple of filters for 5760 and 10368 MHz. These worked so well that I tried some other

  Hfss, Waveguide

Septum Polarizers and Feeds - W1GHZ.org

Septum Polarizers and Feeds Paul Wade, W1GHZ ©2003 The septum feed1,2 was first described by Zdenek, OK1DFC, at the 10th International EME Conference 2002 in Prague. On-the-air results were promising, but, like any new

  Feed, Polarizers, Septum, Septum polarizers and feeds

Improving the Dual-band 10 & 24 GHz Feedhorn for …

The other mechanical problem is robust feedline attachment: WR-42 waveguide for 24 GHz and an SMA connector for 10 GHz. Using brass or copper for the feedhorn would

  Feedline

Portable RF Sniffer and Power Meter - W1GHZ.org

Portable RF Sniffer and Power Meter Paul Wade W1GHZ ©2003, 2004 RF power meters are extremely useful instruments. Whether we are tuning up homebrew

  Portable, Power, Meters, Sniffers, Portable rf sniffer and power meter

Chapter 5 OFFSET-FED PARABOLIC DISH ANTENNAS © …

horn which gave the highest efficiency, and a feed horn I made from flashing copper using the template is shown in Figure 5-7. The higher efficiency of the offset-feed dish is …

  Dish, Chapter, Offsets, Antenna, Parabolics, Chapter 5 offset fed parabolic dish antennas

High-Efficiency Feedhorns for Prime-focus Dishes

High-Efficiency Feedhorns for Prime-focus Dishes VE4MA and Chaparral feeds with Septum Polarizers Paul Wade W1GHZ ©2006 w1ghz@arrl.net measurements by

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Now Four Bands, adding 902 MHz - W1GHZ.org

Multiband Microwave Transverters for the Rover Simple and Cheap Now Four Bands, adding 902 MHz Paul Wade W1GHZ ©2008 w1ghz@arrl.net Operating on multiple microwave bands in VHF contests will greatly enhance a score, as

  Four, Band, Adding, Now four bands, Adding 902 mhz

Let's Talk Transmission Lines

In addition, the transmitter-end impedance of the line is no longer the 50 Ω the radio needs. The impedance presented by the transmission line now depends on the impedance of the antenna relative to the line’s characteristic impedance and the length of the line.

  Line, Transmissions, Talks, Impedance, Let s talk transmission lines

HP Archive

HP Archive This vintage Hewlett Packard document was preserved and distributed by www. hparchive.com Please visit us on the web ! On-line curator: Daniel Sheen

  Archive, Hp archive, Hparchive

Coaxial Traps for Multiband Antennas, the True Equivalent ...

Nov/Dec 2004 19 Watzmannstr, 24A D-85586 POING Germany Coaxial Traps for Multiband Antennas, the True Equivalent Circuit By Karl-Otto Müller, DG1MFT

  Part, Equivalents, True, Antenna, Multiband, Coaxial, Coaxial traps for multiband antennas, The true equivalent

73 - Packet radio

These documents are free to Amateur Radio Operator's and Not-for-Profit organizations. Permission to display elsewhere requires permission of the author(s) and a permit number; Permit number request to display document (include file title).

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INSTRUCTION MANUAL ANTENNA TUNER MODEL DAIWA SPECIFICATIONS SWR/Power Meter Circuitry CNW-419 SOw I CNW.419 ANT 200W 20W 1) Frequency Coverage : 1.8—30MHz

Coaxial Cable Delay - VE2AZX

frequencies well below fδ the two inductances add up, thus increasing the series inductance by 20%. From equation 1 and 2, this increase will cause an increase in the delay and line impedance by 10%. Figure 6 shows the results of my delay measurements on a length of 81 feet of RG-58 type coax cable.

  Delay, Cable, Impedance, Coaxial, Coaxial cable delay

Professional Cords - Wireworks

Microphone XLR Cords. Wireworks offers the most extensive . array of Professional Microphone Cables available today. Designed and manufactured to complement