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• Antennas for 136kHz - Extensive article on building antennas for the 136 Khz band covering several aspects of antennas for the 136 kHz band including Vertical monopole antenna, Short vertical monopole, Vertical antenna with capacitive toploading, Umbrella antenna, Capacitive toploading of single-tower antennas and Spiral toploaded antenna
  [ Hits: 1703 | Votes: 8 | Rating: 5.99 ]

• Balcony and pedestrian mobile motor tuned loop - This antenna was designed to meet the requirements of a light body worn small magnetic loop covering all the frequencies continuously from 7 MHz to 29.4 MHz
  [ Hits: 2884 | Votes: 0 | Rating: 0 ]
• The Thick Loop - The performance of a small magnetic loop can be improved constructing it larger, thicker or both. The antenna is covering from 12 Megahertz to 32 megahertz and adding a 156 Pico farads ceramic capacitor it resonates on the 40 meters band. by PY1AHD
  [ Hits: 1040 | Votes: 0 | Rating: 0 ]

• Another vertical antenna for 30, 40 and 80 meters - This article is to describe a multi band DX-dedicated antenna offering a minimum of compromises (such as lossy traps), for the hams not having any high-support
  [ Hits: 4377 | Votes: 4 | Rating: 3.5 ]
• ON3JT vertical multiband hf antenna - A simple and low cost multiband vertical hf antenna covering 5 bands (20m-10m) from an old CB antenna
  [ Hits: 4151 | Votes: 2 | Rating: 6.5 ]

• Radiation Characteristics - Tailoring Patterns for HF Verticals
  [ Hits: 246 | Votes: 0 | Rating: 0 ]

• Dual Band vertical antenna for 20/40 - A 20 and 40 meter vertical on Autopilot by K6MHE PDF File
  [ Hits: 12608 | Votes: 14 | Rating: 6.57 ]

• Exploring the world of 10 Meter Beacons - Monitoring times article by KS4ZR about ten meters beacon monitoring
  [ Hits: 3210 | Votes: 7 | Rating: 7.86 ]

• VA3GRR - Radio Beacon - VA3GRR is a radio beacon, operating on the 10 meter amateur band. Its frequency is 28.205.5 MHz. It runs just under 5 watts of power into a vertical half-wave ringo style antenna
  [ Hits: 476 | Votes: 1 | Rating: 10 ]

• Sandpiper Aerial Technology LTD - Sandpiper has been designing and manufacturing aerials for over 25 years. Offer HF Dipoles and verticals, VHF UHF Yagi, collinears and other beam antennas, elical antennas,quagi,moxon, and portable antennas, tripods mounts and fiberglass poles
  [ Hits: 2169 | Votes: 2 | Rating: 10 ]

• ElectroSwitch - Leading rotary switch manufacturer, Electroswitch Electronic Products offers a complete, vertically integrated, manufacturing and assembly facility dedicated to producing rotary switches
  [ Hits: 613 | Votes: 0 | Rating: 0 ]

• Shell Engineering : E-Z-TY - Ezty rope clamp manufacturer making your rope and anchor line tasks simpler. Custom made products for all your boating needs. ropes lines, rope clamps, dock lines, end tips, sleeves, sliding locks, clamps, hooks, plastic hooks, tie down kits
  [ Hits: 506 | Votes: 1 | Rating: 10 ]

• Anritsu Connection - Anritsu provides solutions for wired and wireless communication systems and operators. Anritsu products include wireless, optical, microwave/RF, and digital instruments, as well as Operations Support Systems and solutions for use during R&D, manufacturing, installation, and maintenance.
  [ Hits: 354 | Votes: 1 | Rating: 10 ]

• Integrated Engineering Software - Electromagnetic CAE simulation software for modeling and analysis. RF, Microwave & Antennas
  [ Hits: 1686 | Votes: 4 | Rating: 8.75 ]

• AADE Filter Design  ^updated - Dowwnload this free windows programs to design Butterworth, Chebyshev, Elliptic (Caur), Bessel, Legendre and Linear Phase low-pass, high-pass, band-Pass, and band-reject filters. Coupled Resonator band-pass filters
  [ Hits: 24848 | Votes: 114 | Rating: 7.17 ]

• Astron RS35m Power Supply Schematic - Astron RS35m Power Supply Schematic annotated with Notes from QST Hands-On Radio, "Experiment #35 Power Supply Analysis" PDF File
  [ Hits: 10241 | Votes: 32 | Rating: 8.25 ]

• I have RFI, now what - Quantification - This article will cover gathering some software tools used for RFI location and removal.
  [ Hits: 228 | Votes: 2 | Rating: 10 ]

• Basic De-soldering Guide - A pictorial guide to the basic ways of desoldering joints
  [ Hits: 2059 | Votes: 2 | Rating: 7.5 ]
• De-soldering - An overview of some of the ways, and the key tips on how electronics soldered joints can be unsoldered or desoldered.
  [ Hits: 1075 | Votes: 0 | Rating: 0 ]
• How to solder - Key facts about how to solder, how to solder wire, how to solder pcb's, and including general soldering techniques and the best ways of making good solder joints for electronic circuits and construction. Includes video
  [ Hits: 751 | Votes: 0 | Rating: 0 ]

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