Your eardrums will thank you
I used the my KX3 for Field Day in 2016 and after I packed up and brought it home the KX3 stayed in my backpack and only came out for portable outings. It did not go back on my desk. The KX3 cried little electronic tears while the Eagle gloated...
|Ten-Tec Eagle -- compact / simple HF transceiver|
Why no love for the KX3?
I was getting ear fatigue and my ears rang in the evenings. This was not the sort of ringing in the New Year that I wanted. I had been previously operating the same amount with the Eagle over the past month without the earaches. Something was amiss.
Had I finally discovered why I keep going back to my TenTec radios?
Audio, Audio, Audio
But there was a underlying reality to the choice I was making.
Just the facts mamI used an audio frequency analyzer to capture audio from each radio by sandwiching the microphone in my headphones. It hears what I would hear. And the graphs tell a tale.
Below is one graph for each radio. The RED graph line in each chart is the averaged "peaked" frequency output audio during the same QSO. Ignore the green line as it was just the instantaneous audio at the time I froze the display between takes. The CW sidetone on each radio is set to 620Hz.
I re-ran this capture for each radio a few times during a lengthy ragchew between two stations. The signal strength was around S5-S7. It wasn't a strong signal which is typical of what I work, especially as the Solar cycle winds down.
I tried the captures with and without noise reduction on each radio. The RF was rolled off as evenly as I could determine for each and both were set to a DSP filter bandwidth of approximately 400Hz. Both radios were using the same antenna and everything was as similar as I make it. RCVR EQ was set flat for the KX3.
|Elecraft KX3 CW audio (ignore green graph line)|
|Ten-Tec Eagle CW audio (ignore green graph line)|
The CW audio output from each of the two radios is distinctive
|KX3 audio demonstrates |
|Eagle has clean audio|