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Re: [TenTec] [Orion] Orion I V2.055 Spurious Response

To: "Sinisa Hristov" <shristov@ptt.yu>,"Discussion of Ten-Tec Equipment" <tentec@contesting.com>,<orion@contesting.com>
Subject: Re: [TenTec] [Orion] Orion I V2.055 Spurious Response
From: "Lynn Lamb" <w4nl@charter.net>
Reply-to: Discussion of Ten-Tec Equipment <tentec@contesting.com>
Date: Wed, 8 Mar 2006 20:37:40 -0500
List-post: <mailto:tentec@contesting.com>
I here nothing on 3.750 through 3.756 using V2.055 with exactly the settings 
you listed.
Rig modified and up-dated recently at TT and it is a 1st production run 
unit.  Works  great.  The SP may not have the same response as V1, but not a 
problem since it's clean audio.  Seriously, it's all okay here without using 
it on FM, AM, user buttons, the send business, or the keying loops.  I use 
the single relay cable to control the Alpha with no delay.  Use external 
memory keyer on CW.

Noticed that S-tone needs to be far lower setting on V2.055 vice V1.  Now 
use the suggestions for RF gain control/agc vice NR that Bill W4ZV 
suggested.  That is better also.  But don't hear any distortion with the NR 
on SSB or CW... just like the RF adjustment better for CW and SSB.

Lynn W4NL

----- Original Message ----- 
From: "Sinisa Hristov" <shristov@ptt.yu>
To: "Discussion of Ten-Tec Equipment" <tentec@contesting.com>; 
Sent: Wednesday, March 08, 2006 7:38 PM
Subject: [Orion] Orion I V2.055 Spurious Response

> Orion I with V2.055 set up as follows:
>  MAIN RX on ANT1 and VFO A, 3750 kHz LSB,
>  6 kHz roofing filter, BW = 2500 Hz, PBT = 0 Hz, 199 taps
>  RF GAIN = 100, PREAMP ON, no ATTN
> A -79 dBm (S8 dB) carrier at 3750 kHz presented to ANT 1 input.
> The normal response is heard by tuning Orion from 3750.0 to 3752.5 kHz.
> A spurious response is heard by tuning Orion from 3753.5 to 3756.0 kHz.
> It sounds "backwards" and is approximately 40 to 50 dB below the main 
> response.
> Did this happen with V1 firmware?
> 73,
> Sinisa  YT1NT, VE3EA
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