In this Shack Talk article, we’ll take a look at some common mistakes new radio amateurs sometimes make. This short list comes from working with a gaggle of new hams over the years and trying to help them get started in ham radio. 1. Programming the radio incorrectly The typical amateur radio is loaded with […]
Continue ReadingPosted by Wayne KE8JFW on January 31, 2020 at 12:44 pm As we’ve written about before, the Solar Cycle is one of many things about Ham Radio that we wish we had more control over—right up there with our HOA boards and thunderstorms on Field Day. A lack of solar activity makes working the bands from 14-28 MHz (20 […]
Continue ReadingAmateur Radio VHF/UHF Nets in India (Location Wise) Prepared by Jose Jacob, VU2JOS National Institute of Amateur Radio, Hyderabad E&OE Updates to [email protected] 6 July 2020 State Location (Dist.) Start End Callsign MHz Net Name Echolink Callsign Remarks Andhra Pradesh Vijayawada 7.30 am 7.45 am VU2KDD 145.550 Minus Amravati Net 7.30 pm 7.45 pm […]
Continue Reading1. Applicant shall first register themselves as an indivudual on Saral Sanchar Portalhttps://saralsanchar.gov.in . The login credential shall be send to the authorizedperson’s registered email ID and mobile number through which the applicant maylog in to the portal.2. The applicant needs to fill the application /registration forms with due care to avoidany error(s). The applicant […]
Continue ReadingCommonly published information tells us winding a choke or 1:1 balun on a toroid with this special winding technique increases common mode impedance (choking isolation) of an 11-turn balun on a pair of #65 material ferrite cores: The common mode rejection sweep, assuming a 50-ohm common mode source and load is: (pardon the camera jitter) […]
Continue ReadingAuthor: John A. Brackemyre, K7EFX, Stockton, California © June 1, 2010 Design ScopeThe purpose of this build was to replace my 12/6-Meter inverted-vee with a rotatable antenna. Being a Special Effects designer and machinist I had all of the parts so I designed around what was in my collection of tubing, clamps and hardware. Using […]
Continue ReadingDipole Antennas – the Effect of Height Above Ground I frequently hear the question: how high should my dipole be? Or alternatively, will my dipole work well at this or that height? Unfortunately, these questions can not be answered without first stating what you want the dipole to actually DO, i.e. how you plan to […]
Continue ReadingThe Umbrella This post describes a simple, easy to make and erect portable vertical antenna for the low bands (160, 80 and 40M). {ed. 80, 40, 20 and 15M were proven at FD 2018} This one is 30 feet high with a unique top hat, utilizing an SG-230 Smartuner and a single elevated radial. It has […]
Continue ReadingThanks to Simone Mannini IW5EDI -May 28, 20202039 – DX Zone With the new WSJT-X version 2.2.0-rc2, now available for downloading from the WSJT-X website the WSJT-X development team has also published additional FT8 “overflow” frequencies: Increasing FT8 usage on the popular bands 40, 30, and 20m means that the default 3 kHz sub-bands are often wall-to-wall with signals. Overcrowding encourages some […]
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The ham radio HF antenna, of the half-wave dipole variety, requires a lot of horizontal space. This Page Covers1. “Full Sloper” Dipole 2. Inverted “V” Dipole 3. Inverted “U” Dipole It’s possible, however, to “fit” a full-length half-wave dipole in less horizontal space, while retaining most, if not all the advantages of the “classic dipole” described elsewhere on this site. (See Antenna Section […]
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