[Elecraft] K4 standing on Sherwood's RX list

[Jim Brown]

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