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Article #10754

TV input signal levels

#10754
From: Brian R. OHern BROHERN
Date: Tue, 29 Sep 1992 11:06
23 lines
1834 bytes
I live in a fairly remote area, so I put up a General Instruments FM/VHF/UHF
antenna and pointed it right at the highest frequency station (68 ~795MHz).

To sum: every FM/UHF station within 150 miles is perfect (stereo, color,
bilingual).  Channel 68 had some color, stereo, but was very snowy.  I put
a broadband (DC-light almost) low noise/linear 30dB amplifier designed for
50 ohms in the line with everything below 600MHz filtered, and 68 was 
perfect. I didn't try to match 50 to 75 ohms.

The question is this:  the 68 signal level was about 150uV, the VHF stations
were all several mV.  If I take the filter out, the signals jump: 68 to 
several mV and others to 180+mV. The manuals for my TV and VCR don't specify
a max signal level, so I was wondering if anyone new what the largest signal
level (mV/dbm) a TV can handle without saturation or distortion or damage.
	(long story short)

BRO'HERN (Electronics Engineer)
____________________________________________________________________________
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From: Brian R. O'Hern (BRO'HERN)
Newsgroups: sci.electronics
Subject: TV input signal levels
Message-ID: <1992Sep29.110627.14770@lonex.rl.af.mil>
Date: 29 Sep 92 11:06:27 GMT
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