Path: utzoo!attcan!uunet!samsung!dali.cs.montana.edu!milton!uw-beaver!sumax!amc-gw!pilchuck!ssc!markz
From: markz@ssc.UUCP (Mark Zenier)
Newsgroups: sci.electronics
Subject: Re: tv tuner ?
Message-ID: <269@ssc.UUCP>
Date: 23 Sep 90 18:22:15 GMT
References: <44900012@uxa.cso.uiuc.edu> <7998@milton.u.washington.edu>
Organization: SSC, Inc., Seattle, WA
Lines: 15

> In article <44900012@uxa.cso.uiuc.edu> tds32845@uxa.cso.uiuc.edu writes:
> >
> >	I would like to know just how complicated a tv tuner is.  Does the
> >tuner use any special components?
> >

Some of the newer "cable ready" tuners use a 610 Mhz SAW filter
as the the first IF and upconvert.  And then mix down to low VHF.
PIN diode attenuators for AGC, 1 GHz prescalers.  A lot of new
stuff.

See the article on building your own spectrum monitor in the
September 1989 Radio-Electronics.

markz@ssc.uucp