2 m radio

1600 links - and 15 categories

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: 5361 | Votes: 15 | Rating: 5.27 ]
A portable 2-element VHF yagi ^pop - Build a portable VHF yagi antenna for 2 meters. All you need is two rabbit ear antennas from Radio Shack, two CATV baluns, four feet of 3/4 CPVC pipe with one tee.
[ Hits: 28668 | Votes: 26 | Rating: 7.23 ]

Collection of Beverage Antenna Information - KB1GW's collection of beverage antenna information
[ Hits: 2586 | Votes: 1 | Rating: 5 ]
The Benchmark Beverage - The purpose of this page is to examine the performance of a typical Beverage when all variables except length are held constant
[ Hits: 1468 | Votes: 0 | Rating: 0 ]

Thinking about Ideal Loops - Loop antennae have been used from ELF to UHF since the beginning of radiocommunications. At low frequencies, the main problem for loop antennae is to have enough sensitivity; the antenna being very small respect to the wavelength the collected energy is also small. To increase the output level the loop may be made resonant, so loosing it%u2019s intrinsic aperiodic characteristics.
[ Hits: 2271 | Votes: 6 | Rating: 7.33 ]

A Magnetic Loop antenna for 7-21 mhz - If you find external wire antennas obtrusive for amateur radio or short wave listening, then this is the antenna for you, is just 1 meter diameter
[ Hits: 3827 | Votes: 2 | Rating: 5.5 ]

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: 68065 | Votes: 64 | Rating: 5.08 ]

An easy loop for VLF - An easy VLF loop, 200Hz-20kHz reception without transformers by Renato Romero and Marco Bruno
[ Hits: 7461 | Votes: 7 | Rating: 4.86 ]

7 MHz Vertical antenna ^pop - 7 MHz Vertical antenna for ham radio band of 40 meter text in spanish and english
[ Hits: 34599 | Votes: 98 | Rating: 8.43 ]

IR Poland - India Radio Poland web site
[ Hits: 967 | Votes: 1 | Rating: 7 ]

Sheffield-live ham radio net - A friendly dx net who welcomes new comers to amateur radio and the serious dxer alike; Daily from 2000gmt on 14.208mhz. Listen the net live.
[ Hits: 5520 | Votes: 10 | Rating: 6.5 ]

Amateur Radio Lighthouse Society - Founded in 2000 by Jim Weidner, K2JXW, the ARLHS is the only society devoted exclusively to Maritime Communications and Ham Radio, Lighthouses and Lightships
[ Hits: 618 | Votes: 3 | Rating: 9.67 ]

Sounds Sweet Communications Speakers - Speakers for Amateur Radio, 2-Way Radio, Shortwave and Scanner listening
[ Hits: 1062 | Votes: 0 | Rating: 0 ]

The Brookdale ATV Repeater System - Provide an ATV repeater function for the North Jersey Exterior Area that is available not only for general amateur radio use, but also for providing a unique communications resource during emergencies as well (FCC Part 97.1 (a))
[ Hits: 564 | Votes: 0 | Rating: 0 ]

Radio Equipment : HF Transceivers : Kenwood TS-950SDX

Kenwood TS-950S RF gain mod - The Kenwood TS-950S and TS-950SD HF transceivers are fine radios. However, many, if not all, of them were produced with a design flaw which allows the RG GAIN control to cease function in the presence of a strong signal IF the AGC has been turned OFF
[ Hits: 1774 | Votes: 1 | Rating: 1 ]

Hamradioindia Shopping - on-line shopping of rf components, ICOM replacement boards, marine modules, kits and more
[ Hits: 837 | Votes: 0 | Rating: 0 ]

HamCalc - Add-in module to Microsoft Excel, contains a set of radio amateur relevant special functions: DistSphericLocator(Loc1; Loc2) Calculates the spheric earth model distance between two locators [km] DirSphericLocator(Loc1; Loc2) Calculates the spheric earth model direction from Loc1 to Loc2
[ Hits: 2245 | Votes: 3 | Rating: 3.67 ]

Cobracom - Oscilloscope, Realtime spectrum analyzer, Impedance meter, RLC bridge and signal generator for Windows. Is a Windows application that converts your PC into a powerful dual-trace signal analyzer (oscilloscope, FFT etc...) . Uses your PC sound card as an Analog-to-Digital a Converter to digitize any input waveform and as Digital-to-analog Converter for the signal generator. True 24 bit adc/dac 48K/96k/192k sampes/sec.
[ Hits: 21552 | Votes: 13 | Rating: 6.23 ]

Sound Card Interfacing - Homebrew your PC sound card to radio interface with this circuit obtained from the pages of Ernie Mills WM2U.
[ Hits: 802 | Votes: 0 | Rating: 0 ]