single 3

single 3

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• Coil Designer - Mk 2 - This page lets you do calculations for single layer air cored coils using the solenoid formula
  [ Hits: 3481 | Votes: 5 | Rating: 4.4 ]

• The 40/30 Pyramid - A dual band delta loop antenna resonating on 30 and 40 meters band using a single wire for the top slopers on both 30 and 40 meters and does not need any balun
  [ Hits: 704 | Votes: 0 | Rating: 0 ]

• Multiband End-Fed Antenna - A homebrew project for a multiband end-fed antenna made with a single FT140-43 and 50pf capacitor and 20 meters of wire.
  [ Hits: 3435 | Votes: 8 | Rating: 6.12 ]

• 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 ]

• Magnetic Loop Antennas - A complete guide to magnetic loop antenna construction, with analysis of multi-turn and single-turn magneti loops, and and insight on choosing the optimal capacitor, or homebrewing your own butterfly capacitor
  [ Hits: 1251 | Votes: 1 | Rating: 10 ]

• Compact and effective 2m 70cm antenna - Antenna was designed for SO-50 satellite operation but can be used for any VHF/UHF activity. It's a mix of a Moxon Antenna and a Yagi antenna. It has gains 4 dBd on 2m and 6.5 dBd on 70cm bands and it is fed via single 50 Ohm cable.
  [ Hits: 2577 | Votes: 1 | Rating: 10 ]

• N3ZN Keys - Custom iambic and single leveler paddles
  [ Hits: 1928 | Votes: 2 | Rating: 5.5 ]

• What is ESSB - Extended Single SideBand is any SSB transmission that exceeds the audio bandwidth of common 2.9kHz SSB J3E modes by essb.us
  [ Hits: 308 | Votes: 0 | Rating: 0 ]

• Practice Files Provided by K7QO - With this method you will learn all 43 characters one character at a time starting with A and progressing through Z followed by numerals, MP3 single files with answer keys
  [ Hits: 332 | Votes: 3 | Rating: 3.33 ]

• Acom 1010 Vs Acom 1011 - Forum post on differences between the Acom 1010 (single 4CX800) and Acom 1011 (Two 4CX250B)
  [ Hits: 473 | Votes: 4 | Rating: 6 ]

• Radius Power - DC Filters - DC filters from radius power are specifically optimized for applications with DC supply like e.g. photovoltaic inverters. Radius Power provides total power solutions, EMI filters solutions from design to manufacturing, Three Phase, Single Phase, Power Line, IEC inlet, Power entry modules Filters.
  [ Hits: 280 | Votes: 2 | Rating: 8 ]

• Coil32 - Coil32 is a free coil inductance calculator, that allows to calculate: single layer and multi layer air core coils, toroidal air core coils, inductors on ferrite rings, in pot core, flat coils on the PCB, and also LC resonance parameters. The program have additional plugins to calculate another kinds of coils. The application is free for usage and distributing.
  [ Hits: 1571 | Votes: 6 | Rating: 7 ]

• GRITTY - Gritty it is a Freeware RTTY decoder for Windows XP/7/8, it decodes a single signal in the 3-kHz audio coming from the transceiver via a soundcard, just like any other RTTY program.
  [ Hits: 1589 | Votes: 4 | Rating: 3.5 ]

• Dentron DTR-2000L restoration - The Dentron DTR2000L is an HF amplifier from the 1980 era. It uses a single 8877/3CX1500A7 tube to produce about a kilowatt of RF output. In this page NR7N includes info on operation, restoration and mods.
  [ Hits: 704 | Votes: 4 | Rating: 9.75 ]

• 100W 50Mhz power amplifier - G3WZT design for a single stage bi-polar 100-150W Linear Power Amplifier for the 6M band.
  [ Hits: 2731 | Votes: 5 | Rating: 3.6 ]

• Single-layer Coil Inductance and Q Calculator - This calculator ask as input diameter, lenght turn and frequencu and will return L and Q
  [ Hits: 383 | Votes: 3 | Rating: 7.33 ]

• The 50 ohm dummy load - Made from two sheets of single sided copper board, copper facing to the outside.
  [ Hits: 2836 | Votes: 3 | Rating: 4 ]

• Frequency Locked Loop VFO for HF - A device which joins in a single microprocessor a digital programmable frequency meter and a control logic capable to lock a manually tuned VFO to its actual frequency by IK3OIL
  [ Hits: 1854 | Votes: 4 | Rating: 7.75 ]

• A CW QRP Transceiver for 20 m band - The little QRP presented in this article may be built in a gradual manner, it is divided in two main modules (plus VFO), you may also complete only a single part (RX or TX module).
  [ Hits: 1615 | Votes: 0 | Rating: 0 ]

• How Common Mode Chokes Work - Examine the function and operation of a common mode choke and the way it reduces unwanted interference. Common Mode Choke vs. Single Choke
  [ Hits: 738 | Votes: 2 | Rating: 10 ]

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