[Orion] Question about noise floor

[Kc9cdt at aol.com]

Continuing to get aquainted with my ORION.

Doing some basic A,, B  Testing today ORION againt my 746 PRO.

Noticed a big difference in the background noise of the ORION compared to the 
746 during normal operation on 20M DX net today (14.247 NET). During periods 
of good signal, no problem..... but during breaks in the conversation, very 
noisey and continuous noise. This noise is there whether there is an antenna 
hooked up or it is grounded ( or just no antenna connected at all. This is with 
normal audio gain, not turned way up.

So , I did a test, ORION with no NR on = very loud  and annoying background 
noise... THIS IS EVEN WITH THE ANTENNA SELECT COAX SWITCH ON NO ANTENNA, This 
grounds the antenna connection to the ORION.  S meter not moving up,,,, so IT 
IS NOT Atmospheric in nature as no signal to the antenna connector.

With the NR on,,, SILENCE... OK but with it off (Which we of course will do 
sometimes) pretty loud noise

Any one have any input... is this normal on them all, or do I have a bad one.


OH, by the way, I have tried it with all kinds of different levels of NR, and 
different AGC settings..... no change

Thanks,
Lee, KC9CDT