From:kurt@cs.tamu.edu (Kurt Freiberger) Newsgroups:rec.radio.amateur.misc
Subject:THE REAL Standard 558
radio mod Followup-
To:rec.radio.amateur.misc Date:30 Nov 1992 17:25:04 GMT Organization:Computer Science
Dept., Texas A&M University Lines:69 Distribution:world Message-ID:
<1fdipginn6l3@tamsun.tamu.edu>
NNTP-Posting-Host:ai0.cs.tamu.edu Keywords:Standard C558A extended transmit >From a sheet that I got from a
vendor, here 'tis:MARS/CAP (Wide band transmit) 1 Remove battery and antenna 2 Remove front case assembly
block by unscrewing 3 Remove tthe copper plate around the back side of the display section 4 Remove the
diode indicated by D2, and add a diode 1SS301 leaving other components intact as per the following drawing.
5 Reassemble radio and install battery 6 Turn on power and execute master reset.
---------------------------------------- ------------+
+------------- | | | +------+ (PC board "donut") | | | / +-----------+ +------+
/ | | | /---\ PC board trace/ | D1 | +--+ +++ | +-----+ component layout | | +--+ +++ | | | +-----------+ | |
\+-+/ +-----+-+ | | | +------+ | | | | | | +-+----+ +-+ +--+ +---+ | | | | |
<---- CHANGE +-------------+ | | D2 | +------+ +---+ | | | +-----+-+ | "Not to scale" | | +-----+ ** ** \**/ \/ +--------+ (about here) +------------+ | | | | +--+ | +----+ | | PC board locator| +-----------------/------\--------+ | +--+ | | | | | | | ++ +-----+ | | ++ +-+ | | | | | | | | | Opening for | | speaker about | | here (funny | | shaped opening) | ............................... CAVEAT:I have not tried this with my radio as yet This is a drawing that I got from a vendor I'm waiting for the 1SS301 diode to get here, as I could not find the configuration of the 3-legged beastie Your mileage may vary 73/Kurt --- Kurt Freiberger, wb5bbw kurt@cs.tamu.edu 409/847-8607 fax:409/847-8578 Dept of Computer Science, Texas A&M University DoD #264:BMW R80/7 pilot "We preserve our freedom using three boxes:ballot, jury, and cartridge." *** Not an official document of Texas A&M University ***
Source QRZ: The Windows Ham Radio CDROM |
