Occupied bandwidth of CW

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Occupied bandwidth of CW

Occupied bandwidth of CW

There seems to be some lingering debate about keying speed affecting occupied bandwidth of a transmitter

post 24 Feb 2025

Telegraph Morse code Links →

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Lego Paddle
I made this Iambic Paddle and keyer combination out of Legos, and the Lego Mindstorms Robotics Invention system

Morse code & phonetics
Below are listed Morse Code plus a few phonetic alphabets

Morse Code Guide eBook
The morse code collection of links

Psion ham software

PSION Greyline Clock PSION Greyline Clock v. 1.0 is a UTC/Local clock showing sunlight/darkness area on the world map

Radioassistance

Radioassistance Radioassistance E Kenwood Dealer, vendita ricetrasmittenti, antenne, parti di ricambio, elettronica

SunCalc

SunCalc SunCalc - sunrise, sunset, shadow length, solar eclipse, sun position, sun phase, sun height, sun calculator, sun movement, map, sunlight phases, elevation, Photovoltaic

1/4 Slopers 40/15M Band The antenna that most suited this application was a 40m band sloper as the guy wire to be used was slightly longer than a 1/4 wave length at 7 MHz and the top fed sloper was the most convenient installation having the least impact

All band dipole Mk2 The All Band HF Doublet is often referred to as a random length dipole as it is generally as long as the available space within reason, but here are a couple of limitations to the ultimate dipole length

160M 1/4 Wave Vertical 160m vertical antenna project. It is 100' of Rohn 25G and a 20' aluminum stinger. The base is made out of four 6' power line insulators sandwiched between two Rohn base plates. 7/8' stainless bolts hold the assembly together. 32 radials 50' long and 30 radials 100'

DHD Double Half Delta

DHD Double Half Delta This is a dhd double half delta in theory it should return a low signal but with a good s - n ratio roughly like a beverage

Visual CW Tuning Indicator

Visual CW Tuning Indicator Many transceivers set the CW transmit off-set equal to the set's sidetone frequency. But it was left to the operator how to match incoming signals to the sidetone for one-frequency QSOs an awkward and time-consuming procedure

Antenna splitter per VHF-UHF per quattro ricevitori

Antenna splitter per VHF-UHF per quattro ricevitori Chi dispone di una sola antenna e vuole collegarvi più di un ricevitore necessità di uno splitter

trap-dipole-7-10-14-18-50-mhz

Trap Dipole 7, 10, 14, 18, 50 MHz Trap dipole 7-10-14-18-50mhz with balun coax cable

Diy Arduino CW keyer

Diy Arduino CW keyer I added code to read push-buttons on digital pins to trigger hard-coded messages like CQ and CQ SOTA