band

2364 links - and 36 categories

Cedevita-20 Antenna - The Cedevita-20 is a hybrid monoband antenna, the result of merging the radiator of a shortened vertical with one element of a dipole. It fits on most balconies and must be hung from the ceiling. By ik1zyw Paolo Cravero
[ Hits: 5374 | Votes: 3 | Rating: 5.33 ]

8 Element Quad for 145 Mhz ^pop - 8 elements quad antenna for 2 meters band, centered on 145 Mhz
[ Hits: 30210 | Votes: 105 | Rating: 5.81 ]

Transmission Lines - Whenever you choose a coax feedline, the frequency of operation is a very important consideration. Over the operating bandwidth of the coax the VSWR is low, typically 1.2:1 or better. Insertion loss is also an important parameter. It is usually specified in dB/foot and is a linear relationship.
[ Hits: 1274 | Votes: 0 | Rating: 0 ]

Wireman-J-Poles for 2m-40m ^pop - J-Poles with Wireman-cables for the quarterwave matching section, working on VHF and HF bands
[ Hits: 27083 | Votes: 252 | Rating: 8.37 ]

A Small Loop Antenna for Forty Meters ^pop - Article on a small magnetic loop antenna for forty meters band by Ben Smith
[ Hits: 26862 | Votes: 8 | Rating: 5 ]

Cubic Quad ^pop - The cubic quad is a very popular way to get reasonably high gain and excellent front to back ratios as well as low angles of radiation for without going to extreme heights. Includes design for 2 6 10 12 15 meter bands
[ Hits: 68064 | Votes: 64 | Rating: 5.08 ]

VHF/UHF Yagi Antenna Design ^pop - Design your VHF UHF Yagi antenna online, a JavaScript enhanced web page that implements the design of an antenna for 2m and 70cm bands. This page offers a streamlined experience for Yagi antenna design enthusiasts. It assumes prior knowledge of Yagi design principles, minimizing distractions with a user-friendly interface. Equipped with essential equations, it provides instant design feedback. Red font warnings indicate design limitations, ensuring practical results. Constraints include Gain (11.8-21.6 dBd) and Boom Length (2.2-39 wavelengths), with additional frequency-dependent restrictions noted in input fields.
[ Hits: 147431 | Votes: 1105 | Rating: 6.95 ]

7 MHz Vertical antenna ^pop - 7 MHz Vertical antenna for ham radio band of 40 meter text in spanish and english
[ Hits: 34597 | Votes: 98 | Rating: 8.43 ]

45SD105 Vlada - Personal web site of a freebander, info on 11m digital modes, pictures of antenna projects
[ Hits: 730 | Votes: 2 | Rating: 7.5 ]

GDXF - German DX Foundation - The German DX Foundation (GDXF), founded in 1996, was established to support HF DX activities - on all bands or modes - to rare countries all over the world
[ Hits: 1163 | Votes: 10 | Rating: 6.6 ]

160 m DXCC - The largest and most up-to-date rankings of top-banders on the Internet.
[ Hits: 560 | Votes: 0 | Rating: 0 ]

Autotena - Antenna manufacturer in Taiwan, products range are RF communication antennas ( CB, VHF, UHF, Dual band, Base Station, Marine, GPS,GSM, PCS, Cellular, DVB-T ) , Amplifiers , Mounting Kit ,Accessories & Related products.
[ Hits: 4289 | Votes: 8 | Rating: 4 ]

Spider Antennas - Compact HF antennas for home and mobile use, compact HF maritime antennas, manufactured by multi-band antennas
[ Hits: 2435 | Votes: 2 | Rating: 1 ]

Areas and squares - List and maps of European squares for each call area. You can use the list, to estimate the location, if you hear a station on the band who's locator you do not know.
[ Hits: 4409 | Votes: 6 | Rating: 3.5 ]

G1HIA ATV and microwaves - Operates fast-scan FM-television in the 1.3, 2.3 and 10.3 GHz bands
[ Hits: 660 | Votes: 0 | Rating: 0 ]

Freeband EQSO Server - Eqso server for eleven meter freebanders. Only freebanders are allowed by this eqso server, based in spain
[ Hits: 3239 | Votes: 30 | Rating: 4.76 ]

HF Antennas for restricted space - Arrl document about invisible antennas and indoor systems. It is important to consider that few compromise antennas are capable of delivering the performance one can expect from the full-size variety. But the patient and skillful operator can often do as well as some fellows who are equipped with high power and full-size antennas. The "cliff-dweller" may not be able to "bore a hole" in the band as often, and as easily, but DX can be worked successfully when band conditions are suitable.
[ Hits: 9199 | Votes: 7 | Rating: 5.28 ]

WD6CNF DSP Filter - Audio Digital Filter, two bandpass filters, three notch filters, two noise filters graphical setting of filter center frequency and bandwidth Drag vertical lines on top of signal, Microphone input, speaker output Mono, 5 kHz bandwidth
[ Hits: 4902 | Votes: 2 | Rating: 10 ]

DSPBOX - DOS Freeware, DSPBOX is an attempt to code the Texas Instruments DSK 'C50 in such a way to make it behave like a commercial DSP noise reduction unit, like the NIR-12, the TimeWave 599+ and others. Not only the noise reduction function has been implemented, but automatic notch, AGC and Band Pass have as well.
[ Hits: 2400 | Votes: 0 | Rating: 0 ]

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 ]