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Re: [Orion] RTTY frequency readout in SUB receiver

To: "TenTec Group" <tentec@contesting.com>, <orion@contesting.com>
Subject: Re: [Orion] RTTY frequency readout in SUB receiver
From: "Stephen M. Shearer" <wb3lgc@verizon.net>
Date: Mon, 16 Jan 2006 08:22:35 -0500
List-post: <mailto:orion@contesting.com>
I have noticed another cosmetic issue with FSK.  I only noticed it on the
main receiver and never checked the sub-receiver.  

In FSK, the filter "picture" shows the filter to be above and below the
center freq (the red line is in the center and the filter skirts on either
side).  BUT, if you look at the sweep display (at 36 kHz) you notice the
center line is to one side just as I would expect if I was using LSB AFSK.
If I use the sweep to hunt for RTTY, I can't "zero" in on the signal.

73, Steve WB3LGC

-----Original Message-----
From: orion-bounces@contesting.com [mailto:orion-bounces@contesting.com] On
Behalf Of Jim McDonald
Sent: Saturday, January 14, 2006 6:37 AM
To: 'Orion @contesting.com'
Subject: [Orion] RTTY frequency readout in SUB receiver

Did the Orion II fix the error in frequency readout that the Orion has when
using the SUB receiver on FSK?  As has been reported before, you have to use
an RIT setting of -2210 Hz for the subreceiver's frequency readout correct.
 
As W5PJR pointed out last April: 

This means that in split operation using the sub receiver to listen to the
pileup, you will not be listening where you are transmitting.  You can work
around this by cranking in -2210 Hz on the subreceiver RIT. 

 

Jim N7US 

 
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