When do I use my PreAmps

Mike-VA3MW

KD0RC

Hi Mike, I have been using this technique with a small simplification. I find that I don't need to set to 500 Hz CW and I don't need to worry about the rx settings like eq. When I start up, I just click to an open ant and adjust for the 8 - 10 dB. As propagation changes during the course of the day, I check and adjust accordingly. I also leave the WNB engaged, as that often reduces my noise floor several dB (as much as 10dB on 40 in the evening). 73, Len, KD0RC

Mark_WS7M

Michael - N5TGL

Brian Denley KB1VBF

Len:
8-10 db measured where?
Thanks

KD0RC

Hi Brian, I just eyeball it using the gridlines on the spectrum display.  The right hand scale shows dBm.  I have mine zoomed so that the gridlines are 5 dB apart.  Because the preamp/attenuator is in 8 dB increments, you can't set this too finely, but close enough is good enough.

73,
Len, KD0RC

Brian Denley KB1VBF

Thanks Len !

KD0RC

You're welcome!

Alan

Russ Ravella

And .... Tim does it again !  Thanks Tim !