BARC 2009

Receiver Performance, Transmitted BW, Contest Fatigue

A ROB SHERWOOD PRESENTATION

"If it feels good, do it!"

 

Unfortunately not every modern transceiver feels good.


Why not?

 

Most people answer this question with something like "I don't know; it just doesn't sound good", or "I get lousy reports with it".

 

IN THIS PRESENTATION, Rob takes a closer look at OTHER FACTORS (not just DR3).

 

Other Factors:

  • Receive audio distortion
  • Transmit distortion
  • AGC-induced distortion

And then he talks about the operator fatigue that can be caused by some of these problems.

 

At the TOP of the RECEIVER PERFORMANCE LIST you will find the FlexRadio 5000 and the Elecraft K3, but . . . 

  • Why do so many people sell their K3's within a few months?
  • Why don't more people use FlexRadio's in contests?

I'm sure there are many answers to these two questions. In this presentation, Rob suggests a few.

Download Presentation and Audio File:

Download
Receiver Performance, Transmitter BW, Contest Fatigue
The first part of this presentation recaps the importance of BDR3. The second half of this presentation focuses on several other important transceiver characteristics.
NC0B-W9DXCC-3a SN.pdf
PDF-Dokument [9.0 MB]

NOTE:  This is the PDF version of Rob's presentation.

  • After you have downloaded the file, save it to your computer
  • Open the saved file with Adobe Acrobat Reader (or similar)
  • Then click "VIEW" at the top, choose "Rotate View", and then "Clockwise".
Download
MP3 Audio for this presentation (BARC 2009)
NOTE: This is a very large MP3 Audio file. It is also very long. After downloading the file, save it to you computer. That way if you have to close before finishing the session, you won't have to
Barc2009Raw.mp3
MP3-Audiodatei [77.9 MB]
Download
756 Pro III 30 second audio clip with electric fence
This is the sound recorded on the right channel of the stereo recorder, source Icom 756 Pro III. The other channel records a Ten-Tec Omni VII.
ImpulseRight30Sec.wav
Wave-Audiodatei [2.5 MB]
Download
Omni VII 30 second audio clip with electric fence.
This is the sound recorded on the left channel of a stereo recorder, source Ten-Tec Omni VII. The other channel records an Icom 756 Pro III.
ImpulseLeft30Sec.wav
Wave-Audiodatei [2.5 MB]