tr switch

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67 links

Antennas : Delta loop
  • 40 Meter Parasitic Delta Loop  pop - 40 Meter 2 element full size parasitic delta loop wire beam construction and switchable
    [ Hits: 30928 | Votes: 30 | Rating: 6.53 ]
Antennas : Stealth
  • Cheap antenna to make from 160m - 6m  pop - 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: 38135 | Votes: 16 | Rating: 7.75 ]
Antennas : Windom
  • OH7SV Matti Hohtola Ham Projects - The most modern QRP transceiver in 2004,Direct Conversion HF Transceiver with DDS LO, 50 ohm to 200 ohm HF wide band transformers, Wilkinson splitter for RX measurements, Windom baluns 2001/2004, Ferrite rod antenna for 80 meter, Magnetic Loop Antenna for 80 m, Mascot Switched PSU 9320 modification to 8A peak current, 150W MOSFET linear amplifier for 80m, 80 m HF SSB/CW Transceiver
    [ Hits: 18992 | Votes: 25 | Rating: 7.88 ]
Manufacturers : Accessories
  • Workman Electronics - Amateur radio accessories, power supplies, tvi filters, speakers, microphones, swr meters, preamplifiers, switches, cable and connectors,
    [ Hits: 3295 | Votes: 3 | Rating: 5.33 ]
  • EZMaster by HamRadioSolutions - EZMASTER the all mode all in one interface. USB/Parallel/Serial Device. Include 75 sec Digital Voice Keyer, K1EL Winkey CW Keyer, SO2R switching, two radio interface, two RTTY audio insulated ports, two flexible Antenna Switch control. Ideal for Contesting, SO1R, SO2R, field day and daily activity. Compatibile with all software on the market : CT, CTWIN, TR, NA, WriteLog, N1MM, WinTest, MMTTY, MIXW and more .
    [ Hits: 1759 | Votes: 4 | Rating: 4.25 ]
  • CW Buffer, Amplifier & Preamp Sequencer - The AMPSEQUENCER board is an advanced microprocessor driven control board specifically designed to buffer CW key signals while switching the amplifier to transmission, it can also be used to provide proper TX delay timing for RTTY and Pre-Amplifier proper sequencing
    [ Hits: 1046 | Votes: 0 | Rating: 0.00 ]
Manufacturers : Antenna Analyzers
  • Comet Antennas - NGC is now distributor for COMET and MALDOL brand antenna products designed, manufactured in Japan. Distributor of DAIWA brand RF SWR/power meters and switching power supplies, antennas, test equipment, antenna analyzers and more
    [ Hits: 20900 | Votes: 34 | Rating: 5.69 ]
Manufacturers : Antenna Rotators Manufacturers : Antennas : HF : Dipole Antenna
  • Alpha Delta Communications - Manufacturers and distributors of coaxial surge protectors, coaxial switches, HF fixed wire antennas
    [ Hits: 2565 | Votes: 1 | Rating: 4.00 ]
Manufacturers : Antennas : VHF UHF Microwave
  • Dunestar Systems - Manufacturer of single band and multiband transceiver bandpass filters for HF. High pass filters, two radoi headphones mix and switch, 6 meter portable antenna, antenna remote switching and steering.
    [ Hits: 1246 | Votes: 2 | Rating: 1.00 ]
Manufacturers : Cable and Connectors
  • Max-Gain Systems, Inc. - Fiberglass for the antenna builder, Antenna Mart quads, Bandmaster quads, transmitting components, vacuum capacitors and relays, tower accessories, gin poles, remote RF coax switches, rotating side mounts, quad spreaders, quad parts, bristol wrenches, doorknob capacitors, transmitting electron tubes, and much more!
    [ Hits: 6767 | Votes: 8 | Rating: 7.43 ]
Manufacturers : Filters Manufacturers : Interfaces
  • Ham Stack - Microcontrollers for many ham radio applications including repeater controllers, beacon transmitters, keyers, antenna switches, battery monitors, etc.
    [ Hits: 419 | Votes: 1 | Rating: 10.00 ]
Manufacturers : Microphones
  • Otto engineering - Otto engineering is comprised of two divisions otto controls and otto communications. otto controls designs and manufactures a full line of switches and grips used in heavy equipment, aerospace, marine, medical and other demanding applications. otto communications designs and manufactures audio accessories for two-way radios used in public safety, police, fire, retail, hospitality manufacturing and other markets.
    [ Hits: 931 | Votes: 2 | Rating: 7.50 ]
Manufacturers : Wattmeters
  • Ameritron  pop - Manufacturer of amplifiers, antenna switches antenna Tuners, wattmeters and relay buffers, amplifier accessories, antennas and tubes and parts
    [ Hits: 41126 | Votes: 19 | Rating: 6.68 ]
  • Diamond Antenna  pop - Base station and repeater antennas, mobile antennas, ,multi-band HF antennas , handheld transceivers, receiving and scanner antennas, power meters, swr meters, power supplies, coaxial switches
    [ Hits: 38721 | Votes: 34 | Rating: 4.84 ]
Radio Equipment : VHF-UHF Handhelds : Kenwood TH-F6A
  • Kenwood TH F6A service menu switch - TH F6A service menu, On TH-F6 transceiver, the Service Menu is accessible only by opening the transceiver
    [ Hits: 2310 | Votes: 5 | Rating: 5.40 ]
Shopping and Services : Accessories
  • Electronics USA - Manufacturer of led digital clocks, digital timers, countdown clocks, electronic kits, audio switches, binary clock, telegraph keys, and cool gadgets.
    [ Hits: 1120 | Votes: 0 | Rating: 0.00 ]
Shopping and Services : Electronic Components
  • Electronic Goldmine - Electronic components dealer, semiconductors, switches, leds, motors, solar energy, ferrites, toroids, capacitors, batteries, jacks and plugs, microphones, meters, power supplies, speakers, transformers, wire and more
    [ Hits: 1328 | Votes: 2 | Rating: 9.50 ]
Shopping and Services : Regional : Europe : UK
  • Isis Electronics (Cheltenham) Ltd - UK Sales of used RACAL, Watkins-Johnson, Icom, Microwave. Large Qty Racal 1792 in Stock. Spectrum Analysers, UHF,VHF Generators, Network Analysers, Bus Switches.
    [ Hits: 3158 | Votes: 0 | Rating: 0.00 ]
Software : Logging
  • Turbolog - TurboLog is a station management and logging program for the discerning radio amateur / hamradio operator. Besides powerful database and logging functions there is a fully integrated support for the control of typical radio station equipment, e.g. Transceivers, Packet radio, Morse and voice keyer, Digital modes terminal, Antenna switching, Acoustic alerting, and more
    [ Hits: 989 | Votes: 2 | Rating: 4.00 ]
Software : Radio Control
  • Commander  updated  pop - A free application that controls up to 4 Alinco, Elecraft, FlexRadio, Icom, JST, Kachina, Kenwood, TenTec, or Yaesu transceivers, switching between them manually or automatically based on frequency, and displaying frequency-dependent settings for devices like tuners and amplifiers; includes a bandspread, and supports transverters, frequency and mode tracking by an independent transceiver or receiver, SDR-based panadaptors, and SO2R switching with microHam or OTRSP-compliant devices.
    [ Hits: 69649 | Votes: 1039 | Rating: 6.18 ]
Software : Satellite tracking
  • HalloSat AO-40 Special Edition - Freeware Tracking Program for AO-40.Based on Windows timesetting, thus automatic switching between normal and daylight saving time. Preview listings with a view to the passband schedule, to the squint angle and elevation. Integrated frequency calculation for transmit frequency (uplink) depending on receive frequency (downlink) with a view to dopplershift. CAT Control for all Icom Transceivers without IC-821.
    [ Hits: 1706 | Votes: 1 | Rating: 10.00 ]
Technical Reference : HF Radios
  • QST signalink review - SL-1 - Designed to handle audio signal interfacing as well as transmit/receive switching Reviewed by Steve Ford, WB8IM
    [ Hits: 464 | Votes: 0 | Rating: 0.00 ]
Technical Reference : Transverters
  • A 6M Transverter - Build a transverter based on a 6M receive converter. A 32MHz TTL oscillator is used as the local oscillator for both transmitting and receiving. RX/TX switching is handled by three SPDT relays.
    [ Hits: 4399 | Votes: 2 | Rating: 10.00 ]
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