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@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@DJ0IP.de>
>To: <tentec@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@contesting.com
>> [mailto:tentec-bounces@contesting.com]
>> On Behalf Of n4lq
>> Sent: Wednesday, January 05, 2005 6:46 AM
>> To: tentec@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@netscape.net (Barry N1EU)
>> To: tentec@contesting.com
>> Date: Wed, 05 Jan 2005 07:53:42 -0500
>> Subject: Re: [TenTec] RE: [Orion] Orion subreceiver
>>
>> > "n4lq" <n4lq@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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