Chinese Vendor unit FB

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W4OP
 

Posts: 15
Joined: 18 Feb 2022, 03:39

Chinese Vendor unit FB

Post by W4OP »

I just completed building my (tr)uSDX Friday night. Still awaiting parts for my custom cabinet.
I had to adjust the 27MHz oscillator down to 26997.900KHz in order for the display to agree with my Rubidium slaved signal generator. Now dead on.
The 40M Minimum Discernible Signal measurement is -124dBm in CW and Sideband. I consider this excellent as even in my rural location, my night time noise is well above that level.
The S meter tracked within 1dB from -100dBm up to -50dBm. That is from S1 to S9+20. Higher levels (eg -40dBm) still indicated -50dBm. I am guessing the AGC is saturated above -50dBm.
I will make spectral measurements later this week.
Having a ball with this rig on 40 and 20M CW. Most fun I have had with a QRP rig in years.
Thank you Manuel and Guido.

Dale W4OP
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