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 *** Msg Nr. : 102943 Da : IK8URG Per : TUTTI @ITA Tipo/status : BF Data/ora : 0122/1900 Dimensione : 5537 Titolo : Alcune modifiche per il C558 Bid (Mid) : 111_IK8URG 靈컴컴컴컴컴컴컴爐컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴캠 � IW2BSF � MODIFICA C-558 STANDARD � 聃컴컴컴컴컴컴컴懃컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴캭 > NOTE TECNICHE PER STUDIO E SPERIMENTAZIONE < MARS/CAP (trasmissione a larga banda) 1. Rimuovere batteria e antenna. 2. Rimuovete il pannello frontale. 3. Rimuovete la placca di copertura del pannello posteriore del display. 4. Rimuovete il diodo indicato D2, e aggiungete un diodo tipo 1SS301 come nel disegno sottostante. 5. Riassemblate la radio. 6. Accendetela e eseguite un master Reset. --------------------------------------------------------------------- ------------+ +------------------------------------------ | | | +------+ (PC board "donut") | | | / +-----------+ +------+ / | | | /---\ PC board trace/ | D1 | +--+ +++ | +-----+ component layout | | +--+ +++ | | | +-----------+ | | \+-+/ +-----+-+ | | | +------+ | | | | | | +-+----+ +-+ +--+ +---+ | | | | | <- DA SOSTITUIRE +-------------+ | | D2 | +------+ +---+ | | | +-----+-+ | "DISEGNO NON IN SCALA" | | +-----+ ** ** \**/ \/ +--------+ (circa qui) +------------+ | | | | +--+ | +----+ | | PC board locator| +-----------------/------\--------+ | +--+ | | | | | | | ++ +-----+ | | ++ +-+ | | | | | | | | | Apertura per | | lo speaker | | | | | ............................................... INFO: WB5WBB NOTA >>> Procedete a vostro rischio e pericolo - MODIFICa NON VERIFICATA! LO SCRIVENTE DECLINA OGNI RESPONSABILITA' DERIVENTE DA UN ILLEGALE ABUSO DI QUESTA DOCUMENTAZIONE TECNICA ! RADIOAMATORI RISPETTATE E FATE RISPETTARE LE NOSTRE FREQUENZE >> NON OPERATE FUORI GAMMA <<. (c) IW2BSF - 1993 ------ Fine del messaggio di IW2BSF ------ ---------------------------------------------------------------------------- 73's QRO de PINO IK8URG [TPK_1.81 FWD] Packet Address: IK8URG@IK8VRH [Co-Sysop] TCP/IP Address [44.134.80.83] /ACK Msg Nr. : 49364 Da : IW3GRX Per : MOD Tipo/status : PN Data/ora : 0521/2126 Dimensione : 4539 Titolo : Alcune modifiche per il C558 Bid (Mid) : 4326_IW3GRW 栢栢栢栢栢栢栢栢栢栢栢栢栢栢栢栢栢栢栢栢栢栢栢栢栢栢栢栢栢栢栢栢栢栢栢栢栢栢栢� 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 *** 栢栢栢栢栢栢栢栢栢栢栢栢栢栢栢栢栢栢栢栢栢栢栢栢栢栢栢栢栢栢栢栢栢栢栢栢栢栢栢�