On 6/8/2019 3:08 PM, Bob McGraw K4TAX wrote:
I do wish he would post transmit IMD numbers. You might surprised at
the radios that are clean and the radios that are.......well not so
clean.
There are alternative measurements, done by ARRL as part of their lab
tests, that quantify an even more important performance spec -- CW
keying bandwidth. Several years ago, after discussions about excessive
CW bandwidth at a WRTC, N0AX arranged for me to get ARRL's data in
electronic form. I exported that data to a spreadsheet and plotted data
for most of the rigs on the same graph. That report is at
http://k9yc.com/TXNoise.pdf
I've also done some of my own measurements, using my second K3/P3. The
first set of data is at http://k9yc.com/P3_Spectrum_Measurements.pdf A
second set of data focuses on the FTDX5000. I measured my neighbor's rig
before and after he had loaded Yaesu's "fix" for it's very excessive
bandwidth. It's at http://k9yc.com/FTDX5000_Report.pdf
73, Jim K9YC
______________________________________________________________
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:[email protected]
This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to [email protected]
