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Re: [TowerTalk] combining TV antennas

To: Steve Maki <lists@oakcom.org>, towertalk <towertalk@contesting.com>
Subject: Re: [TowerTalk] combining TV antennas
From: Mike Fahmie via TowerTalk <towertalk@contesting.com>
Reply-to: Mike Fahmie <wa6zty@yahoo.com>
Date: Tue, 19 Aug 2014 18:52:20 -0700
List-post: <towertalk@contesting.com">mailto:towertalk@contesting.com>
With a selective frequency combiner, you might be able to avoid the 'splitting 
loss' since antenna B (and splitter circuitry) won't load the signal from 
antenna A.  Of course, you'll still have to contend with the losses in the 
selective circuits.

-Mike-



>________________________________
> From: Steve Maki <lists@oakcom.org>
>To: towertalk <towertalk@contesting.com> 
>Sent: Tuesday, August 19, 2014 6:38 PM
>Subject: Re: [TowerTalk] combining TV antennas
> 
>
>On 8/19/2014 8:21 PM, Dick NY1E wrote:
>
>> Can I use a splitter to combine 2 TV yagis pointed in different
>> directions? Does making the feedlines from the spilitter the same
>> length matter in this case? Dick NY1E
>
>Sure - A splitter IS a combiner in reverse. No worries about feedline 
>lengths.
>
>In the analog days, it was preferable to use a combiner with some sort
>of frequency tuning depending on the particular channels you were trying
>to access. You might use a diplexer, or a single channel inserter, or
>multiport single channel filters, etc. The intent being to minimize
>multipath interference from 2 antennas aimed in different directions 
>supplying signal for the same channel.
>
>Digital, though not without issues, is much less prone to ghosting
>problems, so simple broadband combiners can work well in many or most cases.
>
>-Steve K8LX
>
>
>
>
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