lf radio

lf radio

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• A Reduced Half- sloper for 160 meters - A half sloper antenna for 160 meter band Italian translation of a WD8DSB article appeared in a QST issue during 1998.
  [ Hits: 6373 | Votes: 4 | Rating: 8.75 ]

• 40-80 Half-Extended Double Zepp Antenna - 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
  [ Hits: 11400 | Votes: 9 | Rating: 4.44 ]

• End-Fed Halfwave Antenna - The end-fed halfwave antenna is a resonant half wavelength long antenna like a dipole antenna except for it is fed at its end rather then in the center. This antenna is as old as radio and is probably best known as the Zepp Antenna
  [ Hits: 24209 | Votes: 18 | Rating: 7.55 ]

• Thinking about Ideal Loops - Loop antennae have been used from ELF to UHF since the beginning of radiocommunications. At low frequencies, the main problem for loop antennae is to have enough sensitivity; the antenna being very small respect to the wavelength the collected energy is also small. To increase the output level the loop may be made resonant, so loosing it%u2019s intrinsic aperiodic characteristics.
  [ Hits: 2271 | Votes: 6 | Rating: 7.33 ]

• A $20 HF mobile antenna - 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.
  [ Hits: 10547 | Votes: 6 | Rating: 7.33 ]

• An easy loop for VLF - An easy VLF loop, 200Hz-20kHz reception without transformers by Renato Romero and Marco Bruno
  [ Hits: 7461 | Votes: 7 | Rating: 4.86 ]

• WLAN antenna 2.4 GHz Do-It-Yourself  ^pop - A simple homebrew outdoor antenna to 2.4 GHz band.
  [ Hits: 138763 | Votes: 186 | Rating: 5.52 ]

• 9W2VVH (EX-9W6VH) - About my self, family & the exciting of amateur radio.
  [ Hits: 744 | Votes: 8 | Rating: 6.87 ]

• Robeson County Amateur Radio Society - RCARS has been formed to be a non-profit corporation dedicated to the safety and welfare of the citizens of Robeson County in times of emergency, disaster or other communications breakdown or overload.
  [ Hits: 313 | Votes: 0 | Rating: 0 ]

• VU2LFA ham radio in india - This site is basically for the begeners (SWL) of india. This site is supporting to digital communication for hams also.
  [ Hits: 397 | Votes: 8 | Rating: 7.5 ]

• Kiwa Electronics - Kiwa Electronics is a company that specializes in accessory equipment for the radio enthusiast. Our products include Filter Modules to improve receiver performance, a High Performance Medium Wave Air Core Loop Antenna for improved broadcast band reception, the Pocket Loop Antenna, the Earth Monitor, BCB Rejection Filter and Broadband and SW Preamps. We also offer numerous performance upgrades for popular receivers.
  [ Hits: 3067 | Votes: 5 | Rating: 8.8 ]

• AN Wireless Tower Company - AN Wireless is a manufacturer and distributor of Self Supporting Tower Systems for Wireless Communications, Wireless Internet, Wireless Networking, Microwave, Paging, Broadcast, Two-Way Radio and Amateur Radio.
  [ Hits: 1838 | Votes: 4 | Rating: 6 ]

• KN4LF LF/MF/HF Radio Propagation Theory Notes - Layman level explanations of "seemingly" mysterious LF MF and HF propagation occurrences.
  [ Hits: 776 | Votes: 1 | Rating: 10 ]

• Sydney Scanner Frequencies - One of the best compilations of frequencies in Sydney particularly SW. Include Police, other emergency people, Marine, the entire aircraft list for Sydney, RAAF squadron frequencies, UHF CB frequencies as well as a heap of miscellaneous frequencies like security, shoppin malls etc.
  [ Hits: 14055 | Votes: 59 | Rating: 6 ]

• Alfa Lima International - A free radio station that is transmitting world wide on several shortwave frequency 's with loads of pirate and freeradio information.
  [ Hits: 1203 | Votes: 2 | Rating: 9.5 ]

• Glenn Hauser's World of Radio
  [ Hits: 2324 | Votes: 6 | Rating: 8.33 ]

• TLF Contest Log - A GPL console mode (ip-) networked logging and contest program for hamradio under LINUX
  [ Hits: 1437 | Votes: 3 | Rating: 10 ]

• HAM-LOG by HB9CQV - This program is freeware for ham radio purpose only, multilingual german and english, self running, runs also from USB devices
  [ Hits: 2622 | Votes: 6 | Rating: 8.17 ]

• 10 Amp 13.8 Volt Power Supply - Sometimes amateurs like to home-brew their power supplies instead of purchasing one off the shelf at any of the major ham radio retail dealers.
  [ Hits: 1934 | Votes: 3 | Rating: 9.67 ]

• QRM and noise reduction - You will find on these pages my experiences and results on antennas and local/non-local QRM/noise reduction. Using a broadband vertical active magnetic loop and a home made / designed broadband amplifier. Two vertical magnetic Alford loops are used in an array. Analog and Digital Signal Processing and a dual phase coherent Software Defined Radio (SDR) are used. By PA0SIM
  [ Hits: 5086 | Votes: 6 | Rating: 7 ]

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