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Query: ht antenna
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HF multiband mini delta compact and easy assembling antenna that cover from 20 to 10 meters by GM3VLB -
This homebrew legal-limit antenna tuner is based on the famous "Ultimate Transmatch" introduced by the late Lew McCoy, W1ICP. The Ultimate Transmatch was described in the "Beginner and Novice" section of the July 1970 QST (Page 24). -
Calculates resonant frequency of a loop antenna, correcting for distributed capacitance. -
A dual-bander for 80M and 40m. An Extended Double Zepp (EDZ) is a 5/4 wavelength center-fed dipole. This article will introduce the Half-Extended Double Zepp (HEDZ) which has characteristics that a lot of amateur radio operators should find quite interesting -
Article with detailed pictures of an endfeed antennna for 20 and 30 meter band -
A portable antenna for mode B and J satellites -
Ham radio dealer based in germany offer RF power amplifiers, from Alpin and SPE, antennas, RFI suppression products and GSM GPRS products -
Ham Station description of HB9ABX and CE3CWF, magnetic loop antenna details, Free Energy devices, Pictures from Switzerland and Chile. -
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DIY Basic Electronic Theory, Basic Antenna Theory with Antennas built from common materials. What does SWR really mean. Baluns from transmission line. -
Simple and cheap antenna for 40/80 meter band in Italian -
This drawing shows a simple 10 meter wire J-pole antenna designed for 28.4 MHz. It is a vertical, end-fed Zepp-style antenna made from common materials and intended for easy home construction. The main radiating element is a straight length of stranded copper wire, either 14 or 18 gauge, cut to about 16.5 feet. At the top, the wire is supported by an insulator, allowing the antenna to be hoisted vertically. The matching section is made from 450-ohm ladder line, approximately 7 feet 9.5 inches long, and shorted at the bottom. This matching stub transforms the impedance so the antenna can be fed with coaxial cable. The feed point is tapped about 6 inches above the bottom of the stub, with the shield and center conductor connected at the proper points. A choke balun is formed with five turns of RG-58 coax in a 4-inch diameter loop to help reduce unwanted RF on the feed line. The drawing notes that this antenna has about 0 dBd gain, similar to a dipole, but offers an omnidirectional pattern and low-angle radiation when installed high. Its main advantage is practical performance, simple construction, and effective coverage for 10 meter operation. -
Antennas, Filters, accessories, wattmeters, tuners and amplifiers. -
Long range Wi-Fi antennas you can build. Helicals, parabolics, and biquads discussed. How to add external antennas to WUSB54GC and F5D7050 usb wireless adapters for long range connections. -
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This Antenna is not really practical for AO-40 reception, but horn antennas have a number of qualities useful in microwave antenna testing and noise figure measurements. -
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Constructing and designing full size, single band stacked yagi antenna arrays -
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QRP and Homebrew HAM Radio by DL2FI and DL7NIK QRP Made in Germany and more QRP Kits, qrp transceivers, accessories, mini keyers dealer for antennas, atu and more accessories -
This rugged antenna, an omnidirectional collinear, is capable of surviving harsh environments. It's a good choice for repeater installations and can be top, or side mounted to the tower by WA6SVT -
An interesting article about homebrewing antenna traps for multiband antennas by VE3GK -
A detailed drawing of a VHF UHF Log periodic antenna by VA2PHI -
Homebrew a j-pole 2mt and 70 cm antenna project. Make it cheap. This article includes homebrewing instructions, parts lists, tools needed and printable documentation. -
Plans, photos, electrical and mechanical design for this HF Log periodic antenna. -
Presindet Electronics produces all mode CB bands transceivers, antennas, and accessories. -
Basic and illustrated article on building wire dipole antennas. This page is about "how to build a dipole antenna" -
AALog v3.9.0 Build 1288 is a Windows-compatible logging program for amateur radio operators, supporting Windows 2000 through Windows 10. It integrates with CwType, CwGet, TrueTTY, and AAVoice for CW, RTTY, PSK31, and voice operations. The software facilitates online and offline QSO entry, duplicate checking, antenna direction, and distance calculations to DX stations. Key features include managing multiple logs under a single callsign or for different callsigns, and extensive award tracking for DXCC, WAZ, P-75-P, WAS, WAJA, JCC, JCG, WAIP, Russia, RDA, DPF, DDFM, WAU, and WPX, with user-definable award additions. It includes a built-in QSL-manager database, locator grid support, and detailed prefix lists. The program supports export to ADIF and text files, and import from ADIF, LoTW reports, Cabrillo, and AATest formats. External database integration is supported for Buckmaster HamCall CD-ROM, QRZ CD-ROM, RAC CD-ROM (Flying Horse), and Russian Internet Callbook. QSL manager databases like GoList, QSL Routes, and WinQSL are also compatible. The software package for v3.9.0 Build 1288 is 10,630,589 bytes. -
A few hours of fun with PVC and wire and you have got yourself a respectable road radiator. The antenna consists of little more than some PVC pipe topped by a RadioShack replacement whip antenna and a couple of coils made from a small roll of #14 house wire. -
The multi-band trapped dipole is resonant on approx 3.7, 7, 14, 24 7 28.5 Mhz. The overall top length needs to be approximately 32.9 Meters -
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Even if using a tuner this multiband antenna will let you operate from 160 to 10 meters. If you could only put up one antenna, this would be it. Project by N0KHQ. -
Drawings pictures and notes on a rotary dipole antenna for 30 and 40 meters band -
One is an EFHWA for 20-40 meters, and the other is a matching unit for the antenna by n0lx -
How to select an antenna for scanning. This is a Readers Digest version of antennas, meant to give new users some idea of the different antennas and their good and bad points. -
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This antenna is intended as a simple, inexpensive solution for the newcomer to experiment across the 40m band (7.0-7.2MHz) when only restricted space is available -
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A 14 Mhz version of the vertical moxon antenna homebrewed. -
This page describes the design and construction materials W8WWV used to build a coaxial cable trap. A coaxial cable trap is a parallel resonant circuit that is usually inserted in an antenna element to enable multiband operation. -
Concentric Open Loop Antenna Fed Off-Centre similar to the cobwebb antenna but resonating on 20-17-15-10 meters band -
Guide to calculate effective gain of antennas -
80m to 23cm beam antennas, oscar antennas, and antenna rotors -
Sardine Can Antenna. is a BiQuad or Bi circle - wire length each side (8 x 1/4 waves ) 31 mm -
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The finest in VHF/UHF antennas for Amateur and Commercial Applications. Antennas and Repeater Controller Accessories includes Rutland Arrays. -
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Modified version of the Telerana antenna which was orginially featured in the July 1979 issue of QST. The array is suspended within a framework made of fiberglass poles emanating from a central hub with the ends tied together with light weight rope around the perimeter. 10-15-20-30-40 meter band coverage -
Moxon antenna for 50 MHz, The Moxon rectangle is a quite broad-band antenna, but it is not quite broad enough to cover the entire band. -
