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Spectrum analyzer
3 Replies

A spectrum analyzer breaks a complex signal into frequency components and displays the results graphically, to give a familiar representation in the frequency domain of a time-domain signal. Audio…Continue

Started this discussion. Last reply by Chuck aa0hw Feb 23, 2010.

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Chuck aa0hw replied to Bob's discussion Spectrum analyzer
"Thanks Bob, Very good instructions. I was able to setup FLdigi to send a stream of dits at 100wpm using the BLACKMAN raised cosine waveform, and thanks to your step by step tutorial, I was able to get this graph of the FLdigi wave file: "
Feb 23, 2010
Bob replied to Bob's discussion Spectrum analyzer
"Hi Chuck, I'm pretty sure that an Audio with both RF Spectrum Analyzer is a dream in many ham activity. Could be a trick to use another Receiver as the front end and so work around in the Audio Frequency spectrum only? To do that trick,…"
Feb 22, 2010
Chuck aa0hw replied to Bob's discussion Spectrum analyzer
"Excellent program Bob ! Thanks for bringing this to our attention and it puts out a great graph of the cw frequency spectrum on your Yaesu rig. I was wondering if you might tell us how you set this up to help us step by step to do this too... Also,…"
Feb 22, 2010
Bob posted a discussion

Spectrum analyzer

A spectrum analyzer breaks a complex signal into frequency components and displays the results graphically, to give a familiar representation in the frequency domain of a time-domain signal. Audio spectrum analyzers work in the range of audible sound while Radio frequency spectrum analyzers work at radio frequencies but costs much more. At home I use one for free which use the computer and the PC sound card. Fully tested in my small notebook to have a graphical idea about clicks generations…See More
Feb 20, 2010
Bob replied to Carlo Consoli's discussion Zen and the Art of Radiotelegraphy - the book
"Thanks for the free download Carlo. I appreciated vy much. 73 Bob"
Jan 28, 2010
Bob was featured
Jan 24, 2010
Bob left a comment for Chuck aa0hw
"Many thanks for the welcome in the QRQcw, I'm very honoured. Still need to learn a bit how-to here. I hope to meet with all of you on the radiowaves, 73 Bob, I0QM"
Jan 24, 2010
Bob updated their profile photo
Jan 24, 2010
Bob updated their profile
Jan 23, 2010
Bob left a comment for Bob
"Many thanks to keep me in the QRQcw, I'm very honoured. Bob"
Jan 22, 2010
Chuck aa0hw left a comment for Bob
"Hi Bob, We welcome you to our site. Thank you for joining. In your QRZ bio, you mention you like to work with CW filters. We have an ongoing article about CW audio filters in the Forums. Perhaps you may add some of your CW audio filters to that…"
Jan 22, 2010
Bob is now a member of QRQcw
Jan 22, 2010

Profile Information

Your Call Sign
I0QM
How many years have you been performing QRQ CW
20+ but I'm lately QRS always below the noise floor
What speed do you like to run QRQ CW
35WPM, more is a dream
Your favorite key, paddle or bug
Begali, Vibroplex Zephyr
Your favorite cw keyboard
simple keyb + home brew HW
Your favorite cw sending software
W9CF
Your Rig, Antenna and RF Power
Yaesu FT1000, simple wire, 500W
Your QSK preferences
When not QRO
Your favorite headphones or speakers for listening to cw
Sony, open and lightweight

Comment Wall (2 comments)

At 6:25am on January 22, 2010, Chuck aa0hw said…
Hi Bob,
We welcome you to our site. Thank you for joining.
In your QRZ bio, you mention you like to work with CW filters.
We have an ongoing article about CW audio filters in the Forums.
Perhaps you may add some of your CW audio filters to that list.

Thanks again for signing up Bob,
Chuck
At 9:56pm on January 22, 2010, Bob said…
Many thanks to keep me in the QRQcw, I'm very honoured.
Bob

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