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Re: [TenTec] Eliminating BCI Overload

To: "Discussion of Ten-Tec Equipment" <tentec@contesting.com>
Subject: Re: [TenTec] Eliminating BCI Overload
From: "Jim McDonald" <jim@n7us.net>
Reply-to: Discussion of Ten-Tec Equipment <tentec@contesting.com>
Date: Wed, 25 May 2005 19:56:08 -0700
List-post: <mailto:tentec@contesting.com>
Incidentally, I got the ICE BCB HP filter because of my PROII, not the 
Orion, which is much better than the Icom.

In the daytime, the second harmonic a 50 KW station on 1580 mixes with the 
fundamental of a 5 KW station on 1310 generating a nice strong signal on 
1850 in the Icom.  The ICE filter reduces it from S9+40 on the Icom, I 
think, to about an S9, but I'm mentioning those numbers from memory, so 
please don't do the math and compare it to the published spec.

Maybe I never listened on 1850 during the day with my now-gone FT-1000MP or 
the successor radio, the MARK-V, but I don't remember hearing it.

The Topband reflector on http://www.contesting.com/ has lots of posts about 
BCB filters, so search the archives for more info.  The CQ-Contest has more 
posts on the subject too.

Jim N7US

----- Original Message ----- 
From: "Jim McDonald" <jim@n7us.net>
To: "Discussion of Ten-Tec Equipment" <tentec@contesting.com>
Sent: Wednesday, May 25, 2005 7:45 PM
Subject: Re: [TenTec] Eliminating BCI Overload


Look under Filters and Switching Systems on
http://www.arraysolutions.com/prod_category.htm.

Jim

----- Original Message ----- 
From: "Steve Baron - KB3MM" <SteveBaron@StarLinX.com>
To: "Discussion of Ten-Tec Equipment" <tentec@contesting.com>
Sent: Wednesday, May 25, 2005 3:53 PM
Subject: Re: [TenTec] Eliminating BCI Overload


Maybe I am tired, but I could not find the BCI filters.  What are they
under?

Thanks.

----- Original Message ----- 
From: "Jim McDonald" <jim@n7us.net>
To: "Discussion of Ten-Tec Equipment" <tentec@contesting.com>
Sent: Thursday, May 26, 2005 01:21
Subject: Re: [TenTec] Eliminating BCI Overload


> I have the ICE filter because I was too cheap to buy the better one from
> W3NQN.  He had two articles in QST in May and June 1998 if you want to
roll
> your own.  If you want to buy a ready-made one, Array Solutions sells them
> on its web site, http://www.arraysolutions.com/.
>
> The W3NQN filters have more attenuation, especially at the high end of the
> BCB, than the ICE ones.  His best one is a receive-only filter, but
> unfortunately Ten-Tecs that I own (Orion) or have owned (OMNI-VI and
Scout),
> don't have the RX antenna in-and-out loop that an FT-1000MP does, so
that's
> a project.  (My PROII doesn't have one either.)
>
> Array Solutions sells the ICE ones too, and Jay, WX0B, has attenuation
> curves of both on his web site.
>
> Jim N7US



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