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Re: IR Remote Control [message #75184 is a reply to message #75183]

Tue, 08 January 2013 11:31

Wayne Parham
Messages: 18783
Registered: January 2001

Illuminati (33rd Degree)

Speaking of cable TV isolators, what I always used were the old 75Ω/300Ω matching transformers. Now days, the isolators are probably becoming very common because most people are connecting their home theaters to cable TV. But not long ago, there wasn't such a thing to be found. So I used 75Ω/300Ω matching transformers instead. You need two: The 75->300, connected to the 300->75. It works great, only introduces a couple dB loss (which is probably the same as the isolators) so if you have any of the old matching transformers laying around from back in the analog antenna days, don't hesitate to use them.

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Attachment: 300.75.jpg
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[Message index]

		IR Remote Control By: skywave-rider on Fri, 25 May 2012 15:46
		Re: IR Remote Control By: Wayne Parham on Fri, 25 May 2012 18:49
		Re: IR Remote Control By: skywave-rider on Sun, 27 May 2012 15:39
		Re: IR Remote Control By: Wayne Parham on Sun, 27 May 2012 19:50
		Re: IR Remote Control By: skywave-rider on Thu, 31 May 2012 13:52
		Re: IR Remote Control By: Wayne Parham on Thu, 31 May 2012 17:47
		Re: IR Remote Control By: Bill Epstein on Tue, 05 June 2012 13:16
		Re: IR Remote Control By: Wayne Parham on Tue, 05 June 2012 15:19
		Re: IR Remote Control By: Bill Epstein on Sun, 10 June 2012 06:36
		Re: IR Remote Control By: skywave-rider on Sun, 10 June 2012 09:26
		Re: IR Remote Control By: Wayne Parham on Sun, 10 June 2012 09:53
		Re: IR Remote Control By: Bill Epstein on Sun, 10 June 2012 11:08
		Re: IR Remote Control By: skywave-rider on Sun, 10 June 2012 12:22
		Re: IR Remote Control By: Bill Epstein on Sun, 10 June 2012 13:58
		Re: IR Remote Control By: skywave-rider on Sun, 10 June 2012 19:30
		Re: IR Remote Control By: Wayne Parham on Sun, 10 June 2012 21:15
		Re: IR Remote Control By: skywave-rider on Thu, 14 June 2012 18:02
		Re: IR Remote Control By: skywave-rider on Sat, 16 June 2012 18:52
		Re: IR Remote Control By: Wayne Parham on Sat, 16 June 2012 21:26
		Re: IR Remote Control By: Bill Epstein on Sun, 17 June 2012 09:20
		Re: IR Remote Control By: skywave-rider on Sun, 17 June 2012 11:11
		Re: IR Remote Control By: skywave-rider on Wed, 20 June 2012 16:49
		Re: IR Remote Control By: Wayne Parham on Wed, 20 June 2012 19:12
		Re: IR Remote Control By: skywave-rider on Wed, 20 June 2012 22:36
		Re: IR Remote Control By: gofar99 on Thu, 21 June 2012 13:31
		Re: IR Remote Control By: Bill Epstein on Thu, 28 June 2012 05:53
		Re: IR Remote Control By: Wayne Parham on Thu, 30 August 2012 23:47
		Re: IR Remote Control By: gofar99 on Fri, 31 August 2012 15:33
		Re: IR Remote Control By: Wayne Parham on Fri, 31 August 2012 16:19
		Re: IR Remote Control By: gofar99 on Fri, 31 August 2012 21:25
		Re: IR Remote Control By: Wayne Parham on Mon, 24 September 2012 01:06
		Re: IR Remote Control By: Wayne Parham on Sun, 30 September 2012 11:46
		Re: IR Remote Control By: Shane on Tue, 16 October 2012 10:58
		Re: IR Remote Control By: Wayne Parham on Tue, 16 October 2012 11:22
		Re: IR Remote Control By: Shane on Tue, 16 October 2012 13:49
		Re: IR Remote Control By: Wayne Parham on Tue, 16 October 2012 15:23
		Re: IR Remote Control By: Shane on Fri, 19 October 2012 22:19
		Re: IR Remote Control By: Wayne Parham on Sat, 20 October 2012 10:14
		Re: IR Remote Control By: Shane on Tue, 30 October 2012 22:00
		Re: IR Remote Control By: Wayne Parham on Wed, 31 October 2012 20:50
		Re: IR Remote Control By: Wayne Parham on Tue, 20 November 2012 00:34
		Re: IR Remote Control By: gofar99 on Tue, 20 November 2012 19:41
		Re: IR Remote Control By: Shane on Tue, 20 November 2012 20:42
		Re: IR Remote Control By: gofar99 on Tue, 20 November 2012 21:06
		Re: IR Remote Control By: Shane on Tue, 20 November 2012 22:26
		Re: IR Remote Control By: Wayne Parham on Tue, 20 November 2012 23:27
		Re: IR Remote Control By: Wayne Parham on Sun, 30 December 2012 19:50
		Re: IR Remote Control By: Wayne Parham on Sun, 06 January 2013 20:58
		Re: IR Remote Control By: Shane on Sun, 06 January 2013 21:48
		Re: IR Remote Control By: Wayne Parham on Mon, 07 January 2013 11:04
		Re: IR Remote Control By: gofar99 on Mon, 07 January 2013 21:51
		Re: IR Remote Control By: Shane on Mon, 07 January 2013 22:23
		Re: IR Remote Control By: Wayne Parham on Tue, 08 January 2013 10:11
		Re: IR Remote Control By: gofar99 on Tue, 08 January 2013 10:40
		Re: IR Remote Control By: Wayne Parham on Tue, 08 January 2013 11:31
		Re: IR Remote Control By: Wayne Parham on Thu, 10 January 2013 23:06
		Re: IR Remote Control By: Wayne Parham on Mon, 14 January 2013 01:45

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