Re: Hetro dining?

Article View: sci.electronics

Article #7339

#7339

From: Henry Troup
Date: Wed, 19 Sep 1990 18:26

20 lines
1453 bytes

In article <33896@cup.portal.com> ISW@cup.portal.com (Isaac S Wingfield) writes:
>Apropos of "superhetrodyne", there were also two other techniques
>mentioned in old ads: hetrodyne (just a non-trademarked version of
>"superhetrodyne"?) and "neutrodyne". Does anybody know what topology
>that one is?

I am not an Olde Pharte (tm) either - but I play one at the office :-)

"neutrodyne" is an other term for "direct conversion" - you run the local 
oscillator at the carrier frequency, needing no detector.  It's not as good as
superhetrodyne, for two major reasons:

- oscillator drift can kill the reception
- only one neutrodyne receiver per 200 metre radius, becuase they swamp the 
broadcast signal otherwise.

I built a regenerative receiver once...
--
Henry Troup - BNR owns but does not share my opinions | No humor available today
uunet!bnrgate!hwt%bwdlh490 HWT@BNR.CA +1 613-765-2337 | try again tomorrow.

Technical Details

Message-ID: <4393@bwdls58.UUCP>

Path: arc1-ca.pugleaf.net!utzoo!attcan!uunet!know!cs.utexas.edu!news-server.csri.toronto.edu!utgpu!cunews!bnrgate!bwdls58!hwt

References: <SQUASH.90Sep5183021@boogie.math.ufl.edu> <17660105@hpfcdj.HP.COM> <33896@cup.portal.com>

Show Full Headers

Complete Article Headers

Path: arc1-ca.pugleaf.net!utzoo!attcan!uunet!know!cs.utexas.edu!news-server.csri.toronto.edu!utgpu!cunews!bnrgate!bwdls58!hwt
From: hwt@bwdlh490.bnr.ca (Henry Troup)
Newsgroups: sci.electronics
Subject: Re: Hetro dining?
Message-ID: <4393@bwdls58.UUCP>
Date: 19 Sep 90 18:26:43 GMT
References: <SQUASH.90Sep5183021@boogie.math.ufl.edu> <17660105@hpfcdj.HP.COM> <33896@cup.portal.com>
Sender: news@bwdls58.UUCP
Reply-To: hwt@bwdlh490.bnr.ca (Henry Troup)
Distribution: na
Organization: Bell-Northern Research, Ltd.
Lines: 20

Reply to Parent Message