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- Newsgroups: rec.models.rc
- Path: sparky!uunet!ftpbox!mothost!lmpsbbs!bobwo
- From: bobwo@ecs.comm.mot.com (Bob Woodhouse)
- Subject: Crystals AM & FM
- Organization: secure_comm
- Date: Thu, 23 Jul 1992 11:59:21 GMT
- Message-ID: <1992Jul23.115921.4298@lmpsbbs.comm.mot.com>
- Sender: news@lmpsbbs.comm.mot.com (Net News)
- Nntp-Posting-Host: 145.1.147.44
- Lines: 18
-
- Hello,
-
- I have ofeten seen advertisements for pairs of radio crystals in R/C
- magazines where crystals marketed for AM radios sell for about $10
- a pair and those marketed for FM radios sell for about $20 a pair,
- all in the same ad. Maybe the crystals really are different, but I
- really doubt it. In all the time I have played with crystals, a
- crystal was pretty much a crystal, and maybe something like closeness
- of actual frequency to nominal frequency or stability over temperature
- changes could be real differences among various crystals. It seems
- far more likely that some marketeer decided that people with FM radios
- are probably serious enough about their hobby that they will spend more
- money. Who knows, maybe I am forgetting some crystal property that would
- make some kind of crystal more suitable for AM and another crystal type
- more suitable for FM. Any thoughts on the matter could be of interest.
-
- Bob "gee, am I gonna have to ask where all the r/c car posts are in order
- to stimulate r/c car posts" Woodhouse
-