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330 links - and 4 categories

Antennas : 40M : 40 meter Loop Antennas
  • Receiving antenna for low bands  pop - K9AY loop antenna installed at PA6Z Contest group. This is a receiving antennas for the low bands (160m, 80m and 40m). Include schematics and info on a building the control box, preamplifier and low-pass filter
    [ Hits: 17848 | Votes: 9 | Rating: 8.33 ]
Antennas : Feed Lines
  • Band Filters - Experience of band filters, for a contest multi operator enviroenment
    [ Hits: 3627 | Votes: 5 | Rating: 7.60 ]
DX Resources : Clusters
  • DXFun Web Cluster - DX Cluster mainly in spanish, with chat, filtering available upon user registration, propagation reports and solar status, includes also latest dx news.
    [ Hits: 4046 | Votes: 33 | Rating: 6.05 ]
Manufacturers : Antennas : VHF UHF Microwave
  • Amateur Radio Techniques - RF Filters an adjustable j-pole antenna manufacturer based in greece
    [ Hits: 502 | Votes: 0 | Rating: 0.00 ]
Manufacturers : Test Equipment : Spectrum Analyzers
  • Trilithic - Broadband instruments, R and microwave components and filters, field analyzers, spectrum analyzers
    [ Hits: 410 | Votes: 0 | Rating: 0.00 ]
Operating Modes : Amateur Television
  • UHF Reject filter - This filter is a 0.1 dB Tschebychev lowpass with a rejection of 90 dB or better at 430 MHz, and 0.2 dB insertion loss at 72 MHz.
    [ Hits: 1091 | Votes: 1 | Rating: 10.00 ]
Operating Modes : PSK31
  • Adjusting Filters for PSK31 - Screen shots of what happens when you do and don't get it right. By Dick Stevens, N1RCT, a very clear, helpfull and comprehensive document.
    [ Hits: 1748 | Votes: 2 | Rating: 5.50 ]
Operating Modes : RTTY
  • Getting started on RTTY - A complete guide from the station setup, rtty software customization, tips on tuning rtty signals and setting the proper audio level and filters by Andrew G8GNI M5AEX
    [ Hits: 1214 | Votes: 1 | Rating: 6.00 ]
Radio Equipment : HF Transceivers : Icom IC-7000
  • IC7000BKT Icom IC-7000 CAT Control - CAT Control for Icom IC-7000 for windows. Management and synchronization of all memory bank, Management filters, volume, tones, DUP, DTCS, import export, audio recording and log frequency and signal,Auto CQ audio for repetitive calls
    [ Hits: 4371 | Votes: 7 | Rating: 4.15 ]
Software : Circuit Design
  • RF Filters - MS DOS Program for calculations of HP, LP and BP filters at VHF and UHF frequencies up to about 800 MHz by YU1AW
    [ Hits: 1153 | Votes: 6 | Rating: 4.33 ]
Technical Reference : Duplexers
  • Diplexer design notes - Standard diplexer design is based on singly-terminated Butterworth filters.
    [ Hits: 5072 | Votes: 8 | Rating: 5.87 ]
Technical Reference : Filters
  • Interferences and filtering - General information on Filter passbands, interferences, TVI and RFI problems
    [ Hits: 1050 | Votes: 1 | Rating: 10.00 ]
  • YCCC 6 Band Receive Bandpass filter - This is a 6 band receive only filter designed to protect your receiver front end and provide 45dB reject at the stop bands.
    [ Hits: 1390 | Votes: 2 | Rating: 9.50 ]
  • The NVARC Ugly Filter Project - Project to build sets of band pass transmitting filters for reducing the interference between HF transceivers operated in close proximity
    [ Hits: 853 | Votes: 4 | Rating: 9.50 ]
  • Narrow Band-Pass filter for HF - Band-pass filters can be critical components in competitive stations. This setup may help put your station on the map.
    [ Hits: 1894 | Votes: 1 | Rating: 1.00 ]
  • Clean Up Your Signals with Band-Pass Filters - These inexpensive, easily built filters can be the buffer you need between the signals you want to hear and send and those you don't!
    [ Hits: 2741 | Votes: 0 | Rating: 0.00 ]
  • Clean Up Your Signals with Band-Pass Filters part 2 - Part 2 You're now much closer to saying goodbye to your unwanted signal problems!
    [ Hits: 1050 | Votes: 0 | Rating: 0.00 ]
  • Band-Pass Filters for HF Transceivers - Do your multiple-transmitter field day or contest efforts suffer from intrastation interference ?
    [ Hits: 3219 | Votes: 2 | Rating: 9.00 ]
  • K2TR Coax Stub Filters - Multi transmitter filters
    [ Hits: 2757 | Votes: 7 | Rating: 6.43 ]
Technical Reference : Homebrew
  • CW Filter - I0QM Gaussian CW Filter page This Filter for the weak signals is the evolution of the simple Universal State filter, already published on "Radio Rivista", the 8/1993
    [ Hits: 1603 | Votes: 2 | Rating: 8.00 ]
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