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Antennas : 40M- G5RV Beam
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- G5RV 40m Beam Antenna.
Adding a 28 ft. piece of vertical wire to one end of a 102 ft. center-fed dipole turns it into a 40m beam with a very wide beamwidth
[ Hits: 26917 | Votes: 7 | Rating: 9 ]
- 80 Meter vertical Loop
- An 80 meter band vertical loop antenna setup
[ Hits: 1346 | Votes: 0 | Rating: 0 ]
- The G5RV Antenna System Re-Visited
- The original G5RV antenna system consists of a center-fed horizontal 102' wire plus a 34' length of open-wire 525-Ohm feeder. Louis Varney, the antenna system's developer, intended two other features. Learn more at Cebik website
[ Hits: 4658 | Votes: 0 | Rating: 0 ]
- G5RV on 75m and 40m
- Why the G5RV is a good antenna on 75m and 40m
[ Hits: 3392 | Votes: 1 | Rating: 3 ]
- Copper J-Pole Antennas
- Conejo Valley Amateur Radio Club, article edited by Rory Eikland, KG6HCU and Ken Larson, KJ6RZ, they have had excellent experience building and using J-Pole antennas, and share their experience on planning VHF and UHF Jpole antennas.
[ Hits: 14126 | Votes: 15 | Rating: 7.07 ]
- Cheap antenna to make from 160m - 6m
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- The antenna is nothing more than a simple 2.4 metre square loop drawing pinned to the internal brick wall of the spare bedroom. Yep, thats right, the inside wall of the spare bedroom - ideal for flat dwellers, hotel rooms or whinging neighbours, The loop has a simple switched inductance at the top of the square loop and uses a simple coaxial stub to tune the antenna. An additional variable capacitor placed across the feedpoint can be used to fine tune the resonance of the antenna, by Andy G0FTD
[ Hits: 46500 | Votes: 28 | Rating: 7.61 ]
- Do You Need an Antenna Tuner
- Maybe yes, maybe no. It all depends on the type of antenna and feed line you're using. QST Article in pdf format
[ Hits: 22945 | Votes: 12 | Rating: 4.58 ]
- 9 band vertical HF antenna by RW3XA
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- Simple vertical radiator with matching box. No traps, no tuner required for this multiband antenna
[ Hits: 38740 | Votes: 43 | Rating: 7.34 ]
- SMØPSO
- Include some interesting shortwave radio audio files, recorded BC stations, and a large colletion of SWL QSL cards
[ Hits: 577 | Votes: 3 | Rating: 10 ]
- The reflected W beam
- Hexagonal wire beams for all hf bands, technical resource, EZNEC files, tools for antenna modeling and documentation. You can also order parts to build your own antenna.
[ Hits: 2786 | Votes: 3 | Rating: 8.67 ]
- KN4LF LF/MF/HF Radio Propagation Theory Notes
- Layman level explanations of "seemingly" mysterious LF MF and HF propagation occurrences.
[ Hits: 772 | Votes: 1 | Rating: 10 ]
- Kenwood TS-950S RF gain mod
- The Kenwood TS-950S and TS-950SD HF transceivers are fine radios. However, many, if not all,
of them were produced with a design flaw which allows the RG GAIN control to cease function in
the presence of a strong signal IF the AGC has been turned OFF
[ Hits: 1770 | Votes: 1 | Rating: 1 ]
- Nec2Go
- Powerful antenna modeling tool using NEC 2 computing engine. Nec2 specifically provide users, either those experienced with the Nec2 processes, or for those who are neophytes but want to model their own antennas.
Nec2Go uses a simplified process for defining the antenna structure and then providing view of the structure, plots (2D and 3D) and other significant data that is pertinent to the design.
This simplified process uses an edit file with equations for all definitions.
[ Hits: 1953 | Votes: 1 | Rating: 5 ]
- Smith Chart Software
- SimSmith is a highly interactive, real time Smith chart graphing program. Circuits are constructed using drag-n-drop. Load files can be imported from the EZNEC and CocoaNEC antenna simulation software and from the AIM4170 and miniVNApro antenna analyzers. Circuits and load files can be of any size.
Key Features: SimSmith is one of the few Smith chart packages which models transmission line losses. SimSmith also allows the description of circuit elements using algebraic equations. SimSmith has only one screen and allows the screen to be resized to increase workspace or readability.
[ Hits: 1573 | Votes: 6 | Rating: 6.5 ]
- Phase 3D (AO-40) Decoder
- This program demodulates the telemetry data signal transmitted by the AO-40 satellite (aka Phase III-D) using the PC sound card
[ Hits: 1701 | Votes: 2 | Rating: 7.5 ]
- CW Decoder
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- This program allows CW operators to copy CW code with a computer. The decoded CW is displayed as text or can generate a side tone. There is a spectrum display of the audio with a sliding cursor to select a particular audio for decoding. The program also allows for keying a transmitter from the keyboard with full CW break-in operation.
[ Hits: 53128 | Votes: 79 | Rating: 6.4 ]
- eQSLMaster
- eQSLMaster is a HAM radio program, that allow to perform various functions using the Electronic QSL Card Centre (eQSL.cc).
With eQSLMaster users of the eQSL.cc system have the ability to upload an entire ADIF format log file (or single QSO) and have it deposited into eQSL central database using LogServices.
[ Hits: 3954 | Votes: 5 | Rating: 5.6 ]
- FTBCAT Cat radio control software
updated
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- Free CAT control software for Yaesu FT-100, FT-100D, FT-817, FT-817ND, FT-847, FT-857, FT-857D, FT-897, FT-897D, FT-920, FT-1000MP Mark V, VR-5000 and FRG-100 transceivers.
Version 2.1 for Windows. Ths Software no more supported or developed.
[ Hits: 49820 | Votes: 150 | Rating: 4.75 ]
- Different grounds for different shacks
- Technical questions answered about grounding techniques, in pdf file
[ Hits: 3731 | Votes: 0 | Rating: 0 ]
- Lightning Primer
- Lighting protection document by Glen E. Zook
[ Hits: 1898 | Votes: 3 | Rating: 10 ]
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