[TenTec] RE: [Orion] Orion subreceiver

[Barry N1EU]

There might be a mode-specific control signal that could be tapped and used to trigger a relay if you wanted the filter switched out for wider modes.  Personally, I don't mind losing FM on the subreceiver and Gen Coverage AM is still quite listenable at 4Khz BW.

73,
Barry N1EU

"n4lq" <n4lq at iglou.com> wrote:

>I would think a switch could take care of that problem. It will 
>automatically switch in/out on the Omni VI by selecting one of the N 
>buttons. Perhaps it could be made to switch out when selecting a narrow 
>filter setting on the Orion but of course that might take some firmware 
>hacking.
>N4LQ
>
>-----Original Message-----
>From: "NJ0IP" <Rick at DJ0IP.de>
>To: <tentec at contesting.com>
>Date: Tue, 4 Jan 2005 16:16:28 -0800
>Subject: RE: [TenTec] RE: [Orion] Orion subreceiver
>
>> Steve,
>> 
>> The problem is, if you place a smaller roofing filter in the Orion's
>> second
>> receiver's front end, you won't be able to use the AM and FM modes.  If
>> you
>> want to kill those two modes, then you don't need a general coverage
>> RX.
>> Or, stated otherwise, if you want the benefit of a general coverage RX,
>> you
>> don't want to kill AM and FM.
>> 
>> The FT-1000 also only uses the Inrad on one of its receivers.  The
>> second
>> receiver remains as bad as before, but can still be used for AM and FM.
>> 
>> The Orion's main RX is still better than the FT-1000 with the Inrad.
>> 
>> Keep us posted on your VI with the new Inrad.
>> 
>> 73
>> Rick  
>> 
>> 
>> 
>> -----Original Message-----
>> From: tentec-bounces at contesting.com
>> [mailto:tentec-bounces at contesting.com]
>> On Behalf Of n4lq
>> Sent: Wednesday, January 05, 2005 6:46 AM
>> To: tentec at contesting.com
>> Subject: Re: [TenTec] RE: [Orion] Orion subreceiver
>> 
>> This may be another opportunity for INRAD. I think their roofing filter
>> for the MP is 75mhz. I ordered one for my Omni VI and it should arrive 
>> any day. They are expensive but according to initial test, this will 
>> place the VI at the top of the IMD chart. 
>> N4LQ
>> 
>> -----Original Message-----
>> From: n1eu at netscape.net (Barry N1EU)
>> To: tentec at contesting.com
>> Date: Wed, 05 Jan 2005 07:53:42 -0500
>> Subject: Re: [TenTec] RE: [Orion] Orion subreceiver
>> 
>> > "n4lq" <n4lq at iglou.com> wrote:
>> > 
>> > >Is the reason for the sub par sub receiver due to not having a
>> roofing
>> > >filter?
>> > >If not, what is the difference between it and main rx?
>> > >N4LQ
>> > >
>> > 
>> > The subreceiver has a 1st i.f. of 45Mhz and a 2nd i.f. of 450Khz and
>> > lacks the provision for a narrow roofing filter.  It was never
>> intended
>> > to be a competition grade receiver.  I wish there was an extra cost
>> > option to upgrade it to main rx performance, but I'm not sure if many
>> > others feel the same way.
>> > 
>> > 73,
>> > Barry N1EU
>> > 
>> > 
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