Search Results for "low band radio"49 links
- The TTFD-2 antenna
- The lowest-cost approach for home brewing broadband, general-purpose antenna for shortwaves
[ Hits: 6107 | Votes: 19 | Rating: 7.58 ]
- G7LRR Low Band Antennas
- G7LRR Amateur Radio Site,160m Helical Antenna
[ Hits: 3172 | Votes: 7 | Rating: 8.71 ]
- W5GI Mystery Antenna
- W5GI Mystery Antenna is a multi-band wire antenna that performs exceptionally well even though it confounds antenna modeling software.
This antenna covers 80 to 6 meters with low feed point impedance and will work with most radios, with or without an antenna tuner. It is approximately 100 feet long, can handle the legal limit, and is easy and inexpensive to build. It is similar to a G5RV but a much better performer especially on 20 meters.
[ Hits: 115529 | Votes: 88 | Rating: 6.40 ]
- QM7 7 elements 144 MHz Yagi-Uda Antenna
- The QM7 antenna is a simple 7 elements Yagi with 3.70 m boom length for the lower 144 MHz SSB/MGM band, used it mainly for Sporadic-E and MS contacts. It exhibits a forward gain of 11.35 dBd; i.e. 13.5 dB forward gain over the isotropic radiator, while the F/R is about 12.5 dB
[ Hits: 5036 | Votes: 13 | Rating: 5.69 ]
- The flower pot antenna
- A portable dual-band antenna working principally on 10 meters but also close to the 30 meter band. Itís compact, light, economical and doesnít need any radial.
[ Hits: 11227 | Votes: 0 | Rating: 0.00 ]
- 80M Vertical antenna with capacitance hat
- Simple wire antenna cheap to make, using readily available materials, Low angle radiation, with rejection of high angle signals Wide bandwidth, with resonance at the 80M DX window (3.790-3.800 MHz); and Maximum height is 40 feet
[ Hits: 22485 | Votes: 22 | Rating: 7.32 ]
- Low reactance multiband center feed wires
- An antenna system is more easily interfaced to a radio when the input reactance at the feedline terminals is low or close to series resonance
[ Hits: 2800 | Votes: 5 | Rating: 8.80 ]
- A Small Wire Loop Antennas for 160 meters
- Low noise, receive only coax loop antennas for 160 - 10 meters HF bands
[ Hits: 43265 | Votes: 7 | Rating: 6.28 ]
- The K9FD Receiving Loop
- The Answer To Suburban DXing On the Low Bands - by Merv Schweigert, K9FD
[ Hits: 3164 | Votes: 5 | Rating: 7.80 ]
- CB Quad antenna
- A low-cost and easy to build Quad antenna tuned for CB band on 27 Mhz.
[ Hits: 23326 | Votes: 53 | Rating: 6.20 ]
- EI7BA's Amateur Radio Pages
- Multi Band Quad,Cushcraft R5, R7, R7000, repair and maintenance, Remote Antenna Switching, Hexagonal Beam, Automatic Band Decoder, Low Band Verticals, Crank-up Tiltover Tower etc
[ Hits: 13335 | Votes: 20 | Rating: 7.60 ]
- K5ZD contest audio recordings
- Have you ever wanted to listen in on a serious SO2R DX contest effort? hear what the low bands sound like from New England? enjoy a contest without having access to a radio? This is your chance!
[ Hits: 1831 | Votes: 2 | Rating: 9.50 ]
- Radio Filters.Com
- Low Cost FM Notch Filters: Radio Filters.com, manufactures frequency control products including band pass, notch, reject, electronic filters
[ Hits: 671 | Votes: 6 | Rating: 6.83 ]
- Giovannini Elettromeccanica
- Quad, Yagi for low bands. Specialist in antennas, supports and moving of medium-large sized radio antennas, professional rotators, masts, towers, and accessories.
[ Hits: 7747 | Votes: 13 | Rating: 7.23 ]
- Heros Technology Ltd
- HF Radio Preselectors,BCB filters,Low Pass filters,Band Pass filter
[ Hits: 390 | Votes: 1 | Rating: 10.00 ]
- FAX480 was developed to provide for relatively high resolution image transmission on HF, VHF, and UHF amateur radio bands. FAX480 was designed to bridge the gap between conventional slow scan television (SSTV) and conventional facsimile techniques.
[ Hits: 483 | Votes: 1 | Rating: 6.00 ]
- WinDRM - HF Digital Radio Mondiale
- WinDRM is the hottest digital mode on HF today! Nothing else exists where you can transfer data at almost 1KB/s without using proprietary hardware. HF Digital Radio Mondiale allow fast data, pictures, and voice over a 2.5Khz bandwidth
[ Hits: 13667 | Votes: 15 | Rating: 8.86 ]
- Radio waves below 22 kHz
- Exploring ULF-ELF and VLF radio band
[ Hits: 980 | Votes: 5 | Rating: 7.60 ]
- Used Radio Sales
- Sell used low band, mid band and hi band vhf radios and mobile antennas. Used Radio Sales can program these radios to suit your needs.
[ Hits: 436 | Votes: 0 | Rating: 0.00 ]
- Scanrec Scanner Recorder
- Scanner Recorder (Scanrec) is a free audio recorder that is primarily designed to record speech. It has a VOX control that allows the user to save disk space when no sound is present in the signal. Since FM communications has such an effective squelch, the recorder works best with FM. HF ham bands and World Band radio have such a poor signal to noise ratio that the VOX gate on Scanrec might not be very easy to set.
[ Hits: 11083 | Votes: 36 | Rating: 7.11 ]
- Super-Duper for Listeners
- SDL is a dedicated contest logger for SWLs. It's good for all the major international contests and for dozens of others worldwide. SDL is fully working and unrestricted, and is distributed as freeware. It links to Icom, Kenwood and Yaesu radios to follow band and mode changes.
[ Hits: 1239 | Votes: 3 | Rating: 7.00 ]
- EchoFilter uses the soundcard of a PC to process income audio signals in real-time. The narrow filter bandwidth allow the extraction signals and sounds from the audio signal that may normally be close to inaudible.
It is intended for radio HAMS, hobbyists, researchers, scientists and students in the DSP field.
[ Hits: 6784 | Votes: 10 | Rating: 6.01 ]
- Freeware real time DSP filter particularly for applications of amateur radios , IIR, FIR filter, low-pass, high-pass, band-pass filter, band suppressor (notch filter) individually adjustable
[ Hits: 5331 | Votes: 14 | Rating: 8.14 ]
- Ipox5 radio link system
- Ipox5 is the freeware version of a commercial radio linking system, designed for amateur, nhw, emergency communications etc. It is optimised for mobile broadband and difficult IP links. It allows PC access, and up to 100 users on your link at one time. Usefull for multiple PMR446 use on very large sites. Works under Windows 98, XP, Vista, and Linux (under Wine)
[ Hits: 1012 | Votes: 1 | Rating: 10.00 ]
- Codec 2
- Codec2 is an open source low bit rate speech codec designed for communications quality speech at around 2400 bit/s. Applications include low bandwidth HF/VHF digital radio.
[ Hits: 715 | Votes: 0 | Rating: 0.00 ]