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Technology Topics

Technology Topics
On this page you will find reprints of various technology topic articles which I have written over the years and published in various periodicals.

Software Defined Radio (SDR) New Item! (September 08, 2018)
A look and my experience with software defined radio.

Radio DX Topics / SWL & UDX Posts

Radio DX Topics / SWL & UDX Posts
On this page you will find radio DX topics and my listings of various mentionable shortwave listening and utility dx posts.

Military Communication

Military Radio Specifications Updated Item!(July 13, 2020)
Find commonly required information and specifications regarding military radio sets.  (Includes such items as AN/PRC-25 & PRC-77, AN/PRC-66, AN/PRC-68 & PRC-126, AN/PRC-343, PRC-515, AN/PRC-521, RT-524, URC-100 series and more.)

Portions of this section is currently being updated to include user operational tips and "does and don'ts" as supplied by various sources.

Military Radio Accessories Updated Item! (August 05, 2001)
Find commonly required information and specifications about military microphones, handsets, speakers and associated connectors.  Now includes schematic diagrams plus wiring and pin-out information.

Army-Navy Equipment Code Guide Updated Item! (April 30, 2000)
A practical guide to the JETDS equipment designator codes. (AN/xxx-###)

Military Two-Letter Equipment Code Guide New Item! (April 30, 2000)
A practical guide to the military two-letter equipment designator codes.

Military X-Codes (March 29, 1997)
A reference guide to the X-Codes utilized in link 11 communications by military forces.

Military Z-Codes (February 08, 1998)
A reference guide to the Z-Codes utilized by military and commercial communication stations.

Canadian Forces 'Strength & Readability Codes New Item! (November 27, 1998)
A reference guide to the 'Strength' and 'Readability' codes employed by Canadian Forces Stations.

MACS Trenton Updated Item! (July 25, 1999)
A few pictures of the MACS Trenton, aka "Trenton Military" installation.

Canadian Forces Message Routing Indicator Codes (July 28, 1998)
A reference guide to the Canadian Forces message routing indicators (RI) as used in ADDN and RTTY messages.

Sounds of the Modern Commercial and Military Digital StationsUpdated Item! (February 05, 1999)
A digital audio recording reference of modern commercial and military radio data modems.  Recordings feature true samples of digital data streams as digitized in my lab with actual modems.  Included are the regulars --- FSK, NBFSK etc... and some of the new modes such as SERIAL (MIL-STD-188-110A), NB-SERIAL, NATO STANAG 4285, NATO STANAG 4529, 39 TONE (Multi Tone) etc...  Now includes spectral analysis views of the modem waveforms.

Automatic Link Establishment (ALE) Modem (March 07, 1999)
A basic fundamental description of the Automatic Link Establishment (ALE) system accompanied with digital audio recording references and a spectral analysis view of an AUTOLINK II Adaptive Controller Modem.

Sounds of Tactical Radio Jammers Updated Item! (August 10, 1999)
A reference and digital audio recordings of HF, VHF and UHF tactical radio jamming stations.  Recordings featured are high quality samples digitized from actual jamming equipment.  This includes such sounds as Bagpipes, Stepped and Swept Tones just to name a few.  Now includes actual pictures of countermeasures equipment.


COMSEC and Crypto New Item! (October 18, 2009)
A reference guide to common COMSEC and Crypto equipment.
This is a new section and I need your help for information.


Bookmark File Updated Item! (February 06, 2021)
This selection will bring you to the main bookmark file. From there, you can select from various reference topics such as military sites, radio communications sites, surplus electronics and more.


Canadian Air Show Radio Frequency Guide Updated Item! (September 03, 2021)
The guide is currently under development but does include the Canadian International Air Show frequencies held at the CNE in Toronto and the Hamilton International Air Show held in Hamilton.

Latest News

WWVB MaintenanceNew Item! (March 09, 2021)

Notice for March 9-April 9, 2021:

The WWVB broadcast system is being upgraded with new equipment to improve the reliability of the signal. In order to install this equipment, beginning on March 9, 2021 the WWVB signal may be operated on a single antenna at approximately 30 kW radiated power for periods up to several days in duration, and may have occasional outages. Periods of reduced power operation lasting longer than 30 minutes will be logged on the WWVB Antenna Configuration and Power web page, and any outage longer than five minutes' duration will be recorded on the WWVB Outage web page. Upgrades are expected to be complete by April 9, 2021.

Old News

Canadian National Exhibition (CNE) (May 12, 2020)
Due to ongoing COVID-19 concerns, the Canadian National Exhibition (CNE) has been cancelled for 2020. The temporary pause of this year's CNE also means that there will be no CNE Air Show for this season. The CNE will return in 2021.

A Message Regarding the 2020 CNE

Radio Station WWV & WWVH (June 18, 2017)
NOTICE: The National Weather Service Atlantic and Pacific High Seas and Storm Warning announcements as broadcast on WWV and WWVH are scheduled to be discontinued on October 1, 2017.

CFH Weather and Fax Broadcast Cease (September 02, 2010)
The Canadian Forces Fleet MetOc Broadcast service (radioteletype and radiofacsimile) was placed in abeyance effective September 2, 2010.

The following CFH HF radio frequencies are currently no longer active:


CHU Frequency Change (January 01, 2009)
Information on the radio station CHU frequency change.

Items for Sale

Surplus Item for Sale Updated Item! (August 13, 2020)
The list of surplus equipment I currently have for sale.

Canadian Forces

Special section for training and support of Canadian Forces equipment. updated.gif (168 bytes) (May 14, 2000)
Index of Canadian Forces Units and Organizations on the World Wide Web.New Item!(February 08, 2001)

SDR    Military Radio Specs    Military Radio Accessories
Tactical Jammers    Radio Modems    Automatic Link Establishment (ALE)

JETDS Codes    2-Letter Military Equipment Codes
Military X-Codes    Radio Z-Codes    Strength & Readability Codes

Canadian Forces Equipment Support    Canadian Forces RI Codes    MACS Trenton

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Revised: March 20, 2021 (minor)
(c) 1997-2022, Richard Lacroix. All rights reserved.

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