[ICOM] 756Pro3 Noise Floor

[Paul Gates, KD3JF]

I noticed the other evening after doing some experimenting that the noise floor on my 706MKIIG was higher than on my Elecraft KX1 receiver. I noticed that I could copy a CW signal on the KX1 but couldn't on the 706 because of the noise floor on the 706. At first that was scarey!
 
 
Paul Gates, KD3JF 
Elecraft Kits:
K1 #0231
KX1 #1186
XG1: Signal Generator 


----- Original Message ----
From: Ed K1EP <k1ep.list at gmail.com>
To: icom at mailman.qth.net
Sent: Sunday, January 15, 2006 3:15:36 PM
Subject: [ICOM] 756Pro3 Noise Floor


While listening to a dead 6M band this afternoon, I noticed an interesting characteristic on my Pro3.  My setup had 50.125 on Main and 50.110 on Sub, with dual watch enabled.  I had the band scope on.  When I rotated the balance knob fully clockwise (msx Sub), the noise floor rose about 6dB.  This was observable on the band scope as well as the audio output.  It only happened when I maximized the sub band VFO.  I then swapped Main and Sub to make sure that it wasn't a characteristic of the particular frequencies and observed the same thing.  Rotating the balance fully to the Sub band, increased the noise floor.  Has anyone else observed this or can verify this on their radio?

----
Your Moderator: Dick Flanagan K7VC, icom-owner at mailman.qth.net
Icom Users Net: Sundays, 1700Z, 14.316 MHz
Icom FAQ: http://www.qsl.net/icom/