Jim Miller WB5OXQ wrote:
> I got a new Orion a week ago and I am still learning to use it. I previously
> owned an Omni 6+ which had a very satisfactory receiver and with the NR on and
> rf gain at about 60-70% I could enjoy nearly noise free reception.
> The Orion on the other hand has a lot of background noise on most any band
> and I
> cannot seem to get rid of the noise. I have tired different rf gain settings,
> tried several of the programmable agc settings, several different filter
> settings but nothing helps. The noise sounds like steam escaping under
> pressure
> and the nr and nb only changes the tone of the noise. Even with the rf gain
> at
> 1 and the preamp off there is still a lot of noise. The s meter is not
> effected
> by the rf gain settings either. on 75m the S meter reads about 9 s units or
> more when no one is talking. I can copy ssb signals on 75 meters better on my
> 1960's Hammarlund HQ 180.
Assuming that you didn't get a defective unit,
try increasing AGC Threshold in RX menu.
Forget about NR at least until you get a decent copy withou it.
More details in:
http://www.geocities.com/va3ttn/UsingOrionRX.pdf
73,
Sinisa YT1NT, VE3EA
_______________________________________________
TenTec mailing list
TenTec@contesting.com
http://lists.contesting.com/mailman/listinfo/tentec
|