8K PDP-8/I with crisscrossing indirect instructions and data fields

Possible restoration project 1968 DEC PDP-8/I 12-bit mini- computer, all transistors/7400 TTL CPU

Some of the earliest commercial transistors on the market

ICOM IC-780 for sale Nov. 2, 2025

First LORAN A transmission in Canada since 1980

AM 740 CFZM field strength study Mar. 25, 2025 North York

LPB 50 AM BROADCAST TRANSMITTER

Very rare LPB 50B 50-watt AM broadcast transmitter fully restored (April 1969 production)

I thank God for this radio. My dream has come true. Yaesu FTDX101MP !

Test of 1000 watt AM transmitter

1919 Synchronome Master Electric Clock driving 1952 Slave, General Post Office, London.

New DAVIS remote weather station Vantage Pro 2

History of North American AM radio processing

Taking a LORAN A fix on 1850 kHz

WBEN 930 nighttime field strength study: 46 uV/m to 232 uV/m slow variation 10 pm EDT July 4, 2022

In-band HD IBOC AM radio interference from 530 CHLO to 550 WGR Buffalo - read description below

This was amateur radio in 1919 ! Asynchronous rotary gap quenched spark transmitter.

Amateur radio in 1920 - spark, some brave CW, but mostly spark ruled the day.

When AM radio was king. Demo of actual sound, audio processing, and tribute to Leonard R. Kahn.

Linearizing Chippewa amplifier AM plate modulation by screen grid fixed B+ proportion

The world's first and only AM plate modulated Chippewa amplifier Johnson Desk Kilowatt copy

Mid-winter warmup of my 200 hp flathead V8 1940 Ford coupe

My 200 hp naturally aspirated flathead 1940 Ford finally a reality

PDP8/m playing tournament CHESS at 1.2 microseconds /instruction