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179 links - and 4 categories

Internet and Radio : Classifieds
  • HamFM Classifieds - 100% free eBay like classified listings for any ham radio operator. Search filters for distance and item category.
    [ Hits: 179 | Votes: 0 | Rating: 0 ]
Manufacturers : Amplifiers
  • R3KBO EB104.ru Amateur Radio Products - R3KBO is an amateur radio club producing and developing amateur radio kits and assembled products including HF VHF Power Amplifiers or RF Power Kits and amplifier parts, low pass filfers, band pass filters, sourge protections, splitters and combiners, antenna switches
    [ Hits: 511 | Votes: 1 | Rating: 10 ]
Manufacturers : Antennas : HF
  • HyEnd Company - HyEnd is a dutch amateur radio antenna manufacturer. Makers of the popular HyEndFeed Antennas, produce Baluns, bandpass filters and selle Line isolators, coax cables and connectors.
    [ Hits: 196 | Votes: 0 | Rating: 0 ]
Manufacturers : Interfaces
  • Ucchino Produzioni Elettroniche - Ucchino is an Italian manufacturer of electronic cirucits inclunding Digiham amateur radio USB interface for digital modes, morse code oscillator, filters and RF protectors
    [ Hits: 187 | Votes: 0 | Rating: 0 ]
Manufacturers : QRP Kits
  • Breadboard Radio - Maker of QRP Kits, QRP CW receiver and transmitters, audio CW Filters, antenna tuners, dummy loads, and morse code practice oscillator
    [ Hits: 1311 | Votes: 1 | Rating: 10 ]
Operating Modes : HF Operations
  • HF Operations: The Difference with HF - A complete guide on using the HF amateur radio bands, and the differences with VHF, using filters, influence of solar weather, the split mode and phonetic alphabets.
    [ Hits: 335 | Votes: 2 | Rating: 8.5 ]
Radio Equipment : HF Transceivers : Icom IC-706
  • Icom 706MkIIG Filters - Icom 706MkIIG Filters, Make a narrow CW filter work in SSB for the digital modes
    [ Hits: 337 | Votes: 2 | Rating: 10 ]
  • ICOM 706 Filter Install - A forum thread on installing filters on Icom IC 706 MkII Model G with pictures, instructions and video
    [ Hits: 381 | Votes: 0 | Rating: 0 ]
Radio Equipment : HF Transceivers : Yaesu FT-897 Radio Equipment : Receivers
  • Icom IC-R9500 - Icom IC-R9500 Professional Receiver with 5 roofing filters, 48 kHz DSP
    [ Hits: 157 | Votes: 0 | Rating: 0 ]
Radio Equipment : Receivers : Drake R-4C
  • Sherwood / Drake R-4C - Filters and replacement parts for the Drake R-4C receiver by Sherwood Engineering Inc
    [ Hits: 240 | Votes: 0 | Rating: 0 ]
Software : Circuit Design
  • mini Ring-Core-Calculator - Calculate windings on ferrite cores - The program can be used to calculate inductors (coils) and their number of turns on ferrite cores, ferrite shells and air coils. These can be used for baluns, Ununs, bandpass filters, low pass filters, resonant circuits, and more. The technical specifications of the cores are already integrated in the program. Application is free and runs on Windows 32 bit versions only. To make it run on Windows 10 64 bit need to be unzipped in a single folder.
    [ Hits: 390 | Votes: 1 | Rating: 1 ]
Software : Logging
  • TyQSL - Online Logbook - TyQSL is a modern Logbook by Hams, for Hams. A Place for other hams to take a look at your QSO statistics as well as search for QSOs in your Logbook that you made public. Just click onto your name in the Menu Bar when you are logged in to get to your public profile. Soma features includes Shows the users Valid Callsigns Look at QSO Statistics, Search Public Logbooks, Filters are avaliable to find QSOs fast Just share the Link on Social Media, QRZ, or Similar with other
    [ Hits: 302 | Votes: 0 | Rating: 0 ]
Technical Reference : Filters
  • Contest Bandpass Filters - Build a set of W3NQN filters for multi-operator contesting
    [ Hits: 665 | Votes: 0 | Rating: 0 ]
  • RF filter basics tutorial - an overview, introduction or tutorial about the basics of electronics filters including the types of filter and the various filter design considerations and parameters
    [ Hits: 309 | Votes: 0 | Rating: 0 ]
  • W3NQN TX filters - Building the W3NQN bandpass filters
    [ Hits: 426 | Votes: 0 | Rating: 0 ]
Technical Reference : Raspberry Pi Technical Reference : Spectrum Analyzers
  • Tektronix Compatible Tracking Generator - A spectrum analyzer is always an usefull amateur radio test equipment that should be present in a radio shack. Hams can use it for testing frequency response of filters, amplifiers, and other two-port RF devices. This article illustrate a tracking generator compatible with any spectrum analyzer in the Tektronix 490- and 2750-series lineups
    [ Hits: 188 | Votes: 0 | Rating: 0 ]
Technical Reference : TVI Filters
  • 144 Mhz Stop band TVI filters - A High pass filter will not help, use a stop-band filter to notch out the beast.
    [ Hits: 722 | Votes: 1 | Rating: 2 ]
Technical Reference : Test Equipment
  • Antuino - Antenna Test Equipment - Antuino is an accurate instrument that can be used in the field to measure SWR, field strength, modulation, etc. In the lab, it can be used to sweep filters, measure gain, distortion, frequency response, etc. It works upto 150 Mhz. On the third harmonic, it is usable on 435 Mhz band as well (with reduced sensitivity).
    [ Hits: 304 | Votes: 0 | Rating: 0 ]

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