[TenTec] Noisy Orion Help please!

[Sinisa Hristov]

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