Ed,
If your receive loop has a preamp at its feed point, its very likely
that the preamp is being overloaded by the nearby BCB station.
If that's the case, a filter after the preamp will not help.
73
Frank
W3LPL
----- Original Message -----
From: "Edward" <navydude1962@yahoo.com>
To: donovanf@starpower.net
Sent: Thursday, April 16, 2020 9:51:51 PM
Subject: Re: Topband: BCB Filter Recommendation?
Yes. I have a receive only loop. Thanks for the link. Will check it out.
> On 17 Apr 2020, at 00:49, donovanf@starpower.net wrote:
>
> Hi Ed,
>
> Do you currently route your 160 meter antenna through the receive only input?
> If not, you must have the capability to do so to use this filter.
>
> This is by far the least expensive 160 meter receive filter and its rejection
> at 1400 kHz is approximately 60 dB. But you have to build it yourself
> from inexpensive components. Its a band pass filter so you'll need to
> bypass it to operate on other bands. Countless hundreds of these
> 160 meter filters have have been built.
>
> www.k1ttt.net/technote/w3lplfil.html
>
> 73
> Frank
> W3LPL
>
> ----- Original Message -----
>
> From: "Edward" <navydude1962@yahoo.com>
> To: donovanf@starpower.net
> Sent: Thursday, April 16, 2020 9:35:34 PM
> Subject: Re: Topband: BCB Filter Recommendation?
>
> I have receive-only inputs on my rigs.
>
> On 17 Apr 2020, at 00:07, donovanf@starpower.net wrote:
>
> Hi Ed,
>
> Does your station layout allow you to use a receive only filter?
>
> 73
> Frank
> W3LPL
>
> ----- Original Message -----
>
> From: "Edward" <navydude1962@yahoo.com>
> To: donovanf@starpower.net
> Sent: Thursday, April 16, 2020 8:36:59 PM
> Subject: Re: Topband: BCB Filter Recommendation?
>
>
> Thank you, Frank!
>
>
> On 16 Apr 2020, at 22:06, donovanf@starpower.net wrote:
>
> Hi Ed,
>
> What is the frequency of your local BCB transmitter?
>
> This is the best brickwall filter -- capable of handling 200 watts --
> that money can buy. Its provides at least 40 dB of attenuation below
> 1700 kHz. Several PVRC members located within a few thousand
> feet of a 50 KW 1500 kHz BCB transmitter use them with excellent
> success.
>
> www.dxengineering.com/parts/dlw-fl1718
>
> Less expensive filters work fine if your local BCB transmitter is below
> 1500 kHz. You can save even more money if you can place the filter
> before the receiver input to your radio, so the components don't have
> to be rated for 200 watts.
>
>
> 73
> Frank
> W3LPL
>
> ----- Original Message -----
>
> From: "Edward via Topband" <topband@contesting.com>
> To: topband@contesting.com
> Sent: Thursday, April 16, 2020 6:34:21 PM
> Subject: Topband: BCB Filter Recommendation?
>
> Greetings,
>
> I am getting clobbered by a local BCB transmitter, making 160M unusable, even
> with a dedicated RX antenna.
>
> As for filters, I have narrowed it down to the ICE and the Kiwa. Kiwa seems
> to be the more serious filter, as they publish their specs in great detail.
> ICE does not.
>
> Any other filter I should consider besides these two?
>
> Thanks,
> Ed
> 7Z1ES
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