Introduction I am reading a fascinating book about the ocean depths by Susan Casey (Ref.1). She describes an ancient chart by Olaus Magnus of Sweden, depicting in graphic detail the oceans around Scandinavia and the monsters hiding in the depths, waiting to devour unsuspecting sailors (Ref.2)! I immediately thought of Joshua Slocum sailing alone around… Continue reading CelNav Sept Full Moon Lunar Distance
Author: Jeremy Clark
Jeremy Clark is a Senior Telecommunications Engineer and Advanced Amateur Radio Operator VE3PKC. He is the author of E-Books on Telecommunications, Navigation & Electronics.
ATSC Television Antenna Testing with NanoVNA
Introduction Several years ago I purchased a compact television antenna to use on my apartment balcony to cut down on cable costs. My balcony has line of site view of the CN Tower which hosts many television and broadcasting transmitters (Ref.1). So far I have tested pretty well every antenna I have with the versatile… Continue reading ATSC Television Antenna Testing with NanoVNA
R/C Varioprop 6 Signal Tx/Rx Decode_b
Introduction In the previous two posts I examined the Varioprop 6 R/C model airplane PWM transmit signal and simulated it in Scicoslab. In this post I test the Transmitter to Receiver link on CB Citizens Band CH19 27.145MHz and confirm correct operation of the Rudder/Elevator/Engine Speed controls. Test Setup Figure 1 shows the Varioprop 6… Continue reading R/C Varioprop 6 Signal Tx/Rx Decode_b
R/C Varioprop 6 Signal PWM Scicos Simulation
Introduction In the previous post I fired up my Varioprop 6 R/C transmitter and examined the transmit signal. The model aircraft control works by using PWM Pulse Width Modulation for the Rudder, Elevator and Engine Speed. There are 4 pulses; one for each control and for carrier sync. The width of each pulse is a… Continue reading R/C Varioprop 6 Signal PWM Scicos Simulation
R/C Varioprop 6 Signal Decode_a
Introduction I have always been interested in model aircraft and while on a trip to Europe in 1970, I purchased a Graupner R/C remote control plane kit. I took my time building it so as not to make a mistake. Several years later I bought the remote control gear. I never flew the plane since… Continue reading R/C Varioprop 6 Signal Decode_a