[TenTec] Eliminating BCI Overload

[Robert & Linda McGraw K4TAX]

Sounds like the mixing is taking place out of the ICOM.  Might do some IM 
studies and determine if indeed it is inside or out side of the radio.

73
Bob, K4TAX


----- Original Message ----- 
From: "Jim McDonald" <jim at n7us.net>
To: "Discussion of Ten-Tec Equipment" <tentec at contesting.com>
Sent: Wednesday, May 25, 2005 9:56 PM
Subject: Re: [TenTec] Eliminating BCI Overload


> 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 at n7us.net>
> To: "Discussion of Ten-Tec Equipment" <tentec at 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 at StarLinX.com>
> To: "Discussion of Ten-Tec Equipment" <tentec at 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 at n7us.net>
> To: "Discussion of Ten-Tec Equipment" <tentec at 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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