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References: [ +subject:/^(?:^\s*(re|sv|fwd|fw)[\[\]\d]*[:>-]+\s*)*\[TowerTalk\]\s+Low\s+Pass\s+Filters\:\s+Are\s+They\s+Of\s+Any\s+Use\s+Today\s+\?\s*$/: 14 ]

Total 14 documents matching your query.

1. [TowerTalk] Low Pass Filters: Are They Of Any Use Today ? (score: 1)
Author: Richard Solomon <dickw1ksz@gmail.com>
Date: Mon, 16 Apr 2012 12:20:35 -0700
Given that the vast majority of TV's are on Satellite or Cable, is their anything to gain by sticking a Low Pass Filter in the Transmission Line ? Back in the day, they were virtually mandatory, give
/archives//html/Towertalk/2012-04/msg00296.html (7,425 bytes)

2. Re: [TowerTalk] Low Pass Filters: Are They Of Any Use Today ? (score: 1)
Author: Jim Brown <jim@audiosystemsgroup.com>
Date: Mon, 16 Apr 2012 13:28:41 -0700
Put very simply, NO. And even if a TV is on an outdoor antenna, it's hard to find a good reason for an LPF. Since the final shutdown of analog TV several years ago, nearly all broadcasters have aband
/archives//html/Towertalk/2012-04/msg00300.html (8,781 bytes)

3. Re: [TowerTalk] Low Pass Filters: Are They Of Any Use Today ? (score: 1)
Author: K8RI <K8RI-on-TowerTalk@tm.net>
Date: Tue, 17 Apr 2012 02:06:42 -0400
There are still a lot of OTA TVs out there. For the lucky many areas don't have stations left in LOW VHF. In Central Michigan we do and are in the fringe areas for a number of low VHF stations. At th
/archives//html/Towertalk/2012-04/msg00314.html (8,696 bytes)

4. Re: [TowerTalk] Low Pass Filters: Are They Of Any Use Today ? (score: 1)
Author: Steve London <n2icarrl@gmail.com>
Date: Tue, 17 Apr 2012 07:42:25 -0600
As a first-order approximation, Jim is correct. However, the low-band VHF channels have not been totally abandoned. There are even new applications for use of these channels. W9WI's web site has a we
/archives//html/Towertalk/2012-04/msg00323.html (8,226 bytes)

5. Re: [TowerTalk] Low Pass Filters: Are They Of Any Use Today ? (score: 1)
Author: Jim Brown <jim@audiosystemsgroup.com>
Date: Tue, 17 Apr 2012 09:50:18 -0700
The best data for the US is, of course, on the FCC website, and it's quite easy to access (but hard to find if you don't know where to look). The same link will also search AM and FM broadcast licens
/archives//html/Towertalk/2012-04/msg00325.html (8,381 bytes)

6. Re: [TowerTalk] Low Pass Filters: Are They Of Any Use Today ? (score: 1)
Author: "Bill Winkis" <kc4pe@bellsouth.net>
Date: Tue, 17 Apr 2012 11:16:41 -0400
Be Careful ... During the conversion of analog to digital TV, there were millions of A to D TV Converter Box's sold to home owners .... the transition channel in getting the output of the converter b
/archives//html/Towertalk/2012-04/msg00327.html (10,280 bytes)

7. Re: [TowerTalk] Low Pass Filters: Are They Of Any Use Today ? (score: 1)
Author: Jim Brown <jim@audiosystemsgroup.com>
Date: Tue, 17 Apr 2012 13:34:11 -0700
I would call their rigs junk. 73, Jim K9YC _______________________________________________ _______________________________________________ TowerTalk mailing list TowerTalk@contesting.com http://lists
/archives//html/Towertalk/2012-04/msg00328.html (8,161 bytes)

8. Re: [TowerTalk] Low Pass Filters: Are They Of Any Use Today ? (score: 1)
Author: Frank <frankkamp@att.net>
Date: Tue, 17 Apr 2012 16:31:06 -0500
My thought exactly. Even so I also have some junk from the mid 50's. CW only. It is nice to know I can still use it by hooking up my cheap old low pass filter. _______________________________________
/archives//html/Towertalk/2012-04/msg00330.html (8,388 bytes)

9. Re: [TowerTalk] Low Pass Filters: Are They Of Any Use Today ? (score: 1)
Author: "David Thompson" <thompson@mindspring.com>
Date: Tue, 17 Apr 2012 17:50:07 -0400
This topic is far a field from towers and antennas except a low pass filter still controls fundamental overload of TV sets on an antenna/digital converter. If you really want to get high def TV you m
/archives//html/Towertalk/2012-04/msg00331.html (9,527 bytes)

10. Re: [TowerTalk] Low Pass Filters: Are They Of Any Use Today ? (score: 1)
Author: Jim Brown <jim@audiosystemsgroup.com>
Date: Tue, 17 Apr 2012 16:38:21 -0700
That is absolutely false. A low pass filter ONLY suppresses harmonics above its cutoff frequency, usually 30 MHz for traditional products. ARRL's definition of "fundamental overload" is that the fund
/archives//html/Towertalk/2012-04/msg00336.html (11,022 bytes)

11. Re: [TowerTalk] Low Pass Filters: Are They Of Any Use Today ? (score: 1)
Author: Jim Brown <jim@audiosystemsgroup.com>
Date: Wed, 18 Apr 2012 09:36:20 -0700
That doesn't change the Laws of Physics. A low pass filter does not help an old TV any more than it helps a new one. The only thing it does is kill trash produced by a lousy ham rig above the cutoff
/archives//html/Towertalk/2012-04/msg00342.html (9,287 bytes)

12. Re: [TowerTalk] Low Pass Filters: Are They Of Any Use Today ? (score: 1)
Author: "Bill Winkis" <kc4pe@bellsouth.net>
Date: Tue, 17 Apr 2012 18:40:16 -0400
Jim: I would not think the rig was at fault...you'd be surprised at the number of old timers still using 1950ies tube type TV sets ... I even see old black and whites in use..... -Bill --Original Mes
/archives//html/Towertalk/2012-04/msg00347.html (10,336 bytes)

13. Re: [TowerTalk] Low Pass Filters: Are They Of Any Use Today ? (score: 1)
Author: Jim Lux <jimlux@earthlink.net>
Date: Thu, 19 Apr 2012 06:26:17 -0700
Or buying a new TV? This is similar to the problem with cosite interference, e.g. at Field day. if the receiver has insufficient rejection of the fundamental of the interfering signal, no amount of t
/archives//html/Towertalk/2012-04/msg00350.html (10,337 bytes)

14. Re: [TowerTalk] Low Pass Filters: Are They Of Any Use Today ? (score: 1)
Author: Richard Solomon <dickw1ksz@gmail.com>
Date: Thu, 19 Apr 2012 08:08:21 -0700
I can see my original question has caused this thread to drift a bit. However, I did get a feeling from the group as to their worth, so now to look at my situation and proceed accordingly. Thanks to
/archives//html/Towertalk/2012-04/msg00351.html (11,873 bytes)


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