K4ZAD's Radio Information Site

Occasionally I have some radio related information that might be of interest to others.
This Radio sub-domain of the main Inland Marine Radio History Archive site is the home for such content.


Transistor Pinouts:  A page of pinout and base diagram information

DIY UHF TV Antenna: Dimensions & construction details for an indoor Gray-Hoverman UHF TV antenna built on two 24 by 36 inch foam boards.

Easy Frequency Search: Provides a unified way to search the FCC and Radio Locater records for AM and FM station information.  Low frequency beacon information searches can also be done from this page.

Nighttime AM DX Guide - A PDF download: one-page, three-column, listing of nighttime DX targets for those living in North Carolina and nearby states. 

Quilting Hoop Loop: A page with some information and pictures of my  version of N7FKI's Quilting Hoop Loop

Sources for Radio & Test Equipment Manuals:  Twenty + links for manuals, instruction books and schematics

Shortwave Frequency Allocations: A PDF of the frequency bands allocated to the different radio services including a column showing the width of each band.

DIY Coil Calculators: A page with links to on-line coil/Inductance calculators - Find Inductance, dimensions, AL, wire length, permeability, etc.

International Radio Call Sign Prefixes: A PDF listing of prefixes for all the countries on 1 page.

The Windows PC as an Electronics Test Bench:  30+ links to Windows PC based test applications

Heathkit Gird Dip Meter GD 1B - Low frequency coil Kit #341A - Instructions - Correlation Chart

 Digital TV Channel Changes for the Raleigh, NC area. A one page Excel Spreadsheet showing the changes scheduled to be implemented by 2020

Ham VHF FM Channelization History: The 1960s effort to encourage logical selection of frequencies for new 
FM nets. With links to historic documents.

Main Site - The Marine Radio History Archive

New item added - 08/24/2019

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