From cbfsb!att!linac!uwm.edu!spool.mu.edu!mips!mips!decwrl!pa.dec.com!shodha.enet.dec.com!anarky.enet.dec.com!brewer Wed Feb 26 14:21:56 EST 1992
Article: 13849 of rec.radio.shortwave
Path: cbfsb!att!linac!uwm.edu!spool.mu.edu!mips!mips!decwrl!pa.dec.com!shodha.enet.dec.com!anarky.enet.dec.com!brewer
From: brewer@anarky.enet.dec.com (John Brewer)
Newsgroups: rec.radio.shortwave
Subject: Re: FM-10 IC Chip
Message-ID: <5993@shodha.enet.dec.com>
Date: 26 Feb 92 14:34:38 GMT
Article-I.D.: shodha.5993
Sender: news@shodha.enet.dec.com
Organization: Digital Equipment Corporation
Lines: 16


In article <94B28EA6FEBF0064CC@GBURG.BITNET>, M_HAYDEN@GBURG.BITNET writes...
>I have built and used a Ramsey FM-10 stereo transmitter for some time now.
>One unknown, however, is the chip they use. Ramsey calls it their
>proprietary custom IC. I suspect it may be a bit more common than that.
>Does anybody know what it is, and a possible second source? Thanks much.
> 
>Michael

	I think the chip is built by Rolm, and is a BA1404... but this
	is from memory.... 

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      | John Brewer | Internet: brewer@anarky.enet.dec.com  |
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From cbfsb!att!linac!uwm.edu!ux1.cso.uiuc.edu!uxa.cso.uiuc.edu!pnz46378 Sun Mar  1 14:54:33 EST 1992
Article: 13952 of rec.radio.shortwave
Newsgroups: rec.radio.shortwave
Path: cbfsb!att!linac!uwm.edu!ux1.cso.uiuc.edu!uxa.cso.uiuc.edu!pnz46378
From: pnz46378@uxa.cso.uiuc.edu (Paul N. Zaremba (AA9BK))
Subject: Re: FM-10 IC Chip
Message-ID: <1992Feb29.180252.6395@ux1.cso.uiuc.edu>
Sender: usenet@ux1.cso.uiuc.edu (News)
Organization: University of Illinois at Urbana
References: <5993@shodha.enet.dec.com>
Date: Sat, 29 Feb 1992 18:02:52 GMT
Lines: 18


>In article <94B28EA6FEBF0064CC@GBURG.BITNET>, M_HAYDEN@GBURG.BITNET writes...
>>I have built and used a Ramsey FM-10 stereo transmitter for some time now.
>>One unknown, however, is the chip they use. Ramsey calls it their
>>proprietary custom IC. I suspect it may be a bit more common than that.
>>Does anybody know what it is, and a possible second source? Thanks much.
>> 
>>Michael

The chip is a BA1404 manufactured by Rohm. I have the application notes if you
are interested.


-- 
******************************************************************************* Your haggard, budding young electrical engineering student friend from Illinois Paul N. Zaremba / Amateur Radio Callsign AA9BK (After A 9th Beer, KILLED!)
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