Sunday, May 19, 2024

Category: Articles

Instructions for filing online applications for appearing in Amateur Station Operators Certificate (ASOC) Examination and issuance of certificates/license.

QRZ India

1. 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 […]

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Toroid Chokes and Baluns

QRZ India

Commonly 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)  […]

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How High should my Dipole be?

QRZ India

Dipole 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 […]

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Ham Radio HF Antenna For Limited Space

QRZ India

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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The Old Man and the Magloop

QRZ India

Created by Stephen Dubin (W3UEC) on 2020-01-06 Introduction: As with many senior citizens, I am morbidly fearful that I may need to move to a care facility, HOA community or other place where it might be difficult to enjoy my ham radio hobby. This has led me to preoccupation with portable antennas in general and […]

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