Msg Nr. : 182163 Da : IW1ANX Per : TUTTI @ITA Tipo/status : BF Data/ora : 0425/1720 Dimensione : 2546 Bid (Mid) : 46129_IK1MAP Titolo : G3RUH MODIFICHE FT290R II Ho modificato il mio RTX FT-290R II YAESU per adattarlo al modem G3RUH. La sezione di ricezione funziona correttamente in quanto leggo bene i vari BBS a 9600 baud. La trasmissione invece non funziona sempre correttamente. Riporto di seguito lo schema della modifica per l'input del segnale dal modem G3RUH al modulatore dell'RTX. Ringrazio chiunque possa darmi informazioni a proposito. INPUT DA G3RUH _ | .______________. BOBINA | | | +------------+ T13 | C117 R121 | /|10 | | STADIO | +--+ \|/ 1uf 2,2Kh | / +|__ | | MODULATORE |___|/|___| |____.____._______| |___+---+___._8_/ | | | A QUARZO | |\| | | | | | |+ +---+ \ | | +------------+ +--+ | | \ _|_9___. | | \| | R122 +-+ --- C118 Q23(c) | 100Kh | | --- 22Kpf | +-+ | | | | | | | | | | DA STADI \____. ------ MICROFONICI / | ----- GND 73 de IW1ANX Msg Nr. : 183535 Da : IW1ANX Per : TUTTI @EU Tipo/status : BF Data/ora : 0429/1027 Dimensione : 4575 Bid (Mid) : 23682_IW1BBL Titolo : Modifica 9600 baud per l'FT290 >From iw1anx@cfgate.ampr.org Fri Apr 28 18:34:02 1995 Received: from cfgate.ampr.org by cfgate.ampr.org with SMTP id AA55059 ; Fri, 28 Apr 95 18:33:49 UTC Received: by cfgate.ampr.org (NWIDG/N186CD v2.40) id AA55056 ; Fri, 28 Apr 95 18:29:53 UTC Date: Fri, 28 Apr 95 18:29:53 UTC Message-Id: <55057@cfgate.ampr.org> From: iw1anx@cfgate.ampr.org To: tutti%eu Subject: FT290 G3RUH X-BBS-Msg-Type: B I have made the modification about 9600 baud on FT290 R transceiver to connect G3RUH modem. The diagram is described below. Please reply me if you suggest a better solution . Thank and 73 de IW1ANX Claudio. INPUT FROM G3RUH _ | ............................................................................... . | . . | | . . Q26 | | | | Q23(c) . . 2SC2620QB | T13 | C117 R121 | /|10 . . \ | X01 +--+ \|/ 1uf 2,2Kh | / +|__ . . FM \|_.__|[]|_.__|/|___| |____.____._______| |___+---+___._8_/ | . . MOD. /| | |[]| |\| | | | | | |+ +---+ \ | . . / | 13.98Mhz +--+ | | \ _|_9_ . . | | | | \| . . | R122 +-+ --- C118 . . 100Kh | | --- 22Kpf . . +-+ | . . | | . . | | . . | | . . ------ . . FT290 FM TRANSMIT | . . BLOCK DIAGRAM ----- . . GND . ............................................................................... ............................................................. . FT290 PLL/PA . . FM RECEIVE R05 . . BLOCK DIAGRAM | 15k . . .__| |__+---+___ . . | | | +---+ | . . | C06 ___C07 . . | 0.001 ___ . . | | . \ OUT TO . | -----------.-----.------> G3RUH . | | | . / . _16_15_14_13_12_11_10__9__ R16 | . . | | 22K +-+ . . | Q01 | | | . . | MC3357P | | | . . | | +-+ . . --1--2--3--4--5--6--7--8-- | . . . ............................................................. \EX