[52638] MsgNo: 52623 From: JE1RLA@JA1WOI Date: 22-Apr/05:31 Subject: G3RUH modem <-> TM531(to PE1KHX) Times Read: 1 The terminal is connected to slider of VR3(Max. deviation adjast) through through C55(1uf). You can discriminate the terminal of VCO from VR3. TXA ----/\/\/\--II---------- MO VCO 56kohm 0.1uF If you get weary to remove a shielding plate, you may connect TXA to hotend of VR3 through R and C as aforesaid. 2. RXA connect to pin 12 of IC2. IC2 is a hybrid IC for FM IF amp. and detector. The IC was not indicated the number of pin. You must discriminate the pin from granded pin of IC. 2 and 16(last) pin is connected to grand. I connect 2 TNCs to this tranceiver. One is 9600bps and oter is Bell 202,1200bps. Tow modems are running without any troubles. Sammy JE1RLA @je1rla Msg Nr. : 32402 Da : LU7AKC Per : NET9K6@WW Tipo/status : B$ Data/ora : 0815/0241 Dimensione : 3393 Titolo : TM531 & 9600 Bps Bid (Mid) : 12260_LU7AKC TM531<>G3RUH 9600bd Hello, Ed. I received your mail today morning,on Dec., 15. I'm using TM-531 on G3RUH type 9600bps modem. We ha local aria network using 9600bps modem. It is working well,now. But, beginning of this network is not easy. You can connect G3RUH type modem as follow. 1. TXA Take off the shielding plate under the main PCB. Search for VR3 on main PCB. VR3 is indicated on PCB "MAX DEV" for adjust maximum deviation. The slider of this VR is connected to MD pin of VCO through C55 capacitor. Connect TXA to MD pin of VCO using resister(56k to 100kohm) and capacitor 0.1uF,connected in series,like follow. TXA ---II------/\/\/\----MD(VCO) 0.1uF 56k to 100kohm If you get weary to take off shielding plate,you may connect the TXA to hot end of VR3, using the resister and capacitor as aforesaid. TM-531 & 9600 Bps. 2. RXA Search for IC2 on main PCB. IC2 is a 16 pin hybrid IC for IF AMP and discriminator. You can discriminate pin number of this IC from printed symbol on the main PCB, and grand pin. Pin 2 and 16 is connected to grand. pin 5 is output for ceramic filter(CF1),and pin 7 is input from the filter. Connect RXA to pin 12(DET) directly. 9600bps on 1200MHz band is very difficult. Because,frequency stability is not enough. And, IF band width is not enough,too. We are developing SMC transceiver for G3RUH modem on 144,430,1200MHz band. It has high stability PLL OSC(about 1ppm) and good linearity modulator (voltage controlled X'tal OSC) Sammy JE1RLA @ JE1RLA Msg Nr. : 33681 Da : IW3GRX Per : MODS Tipo/status : PN Data/ora : 0820/0059 Dimensione : 1862 Titolo : Modifica TM 531 per 9600 baud. Bid (Mid) : 33681_IW3GRX Original from LU7AKC to NET9K6@WW Path: !IW4CQH!IW4CEA!I4UJB!IW4BYK!IK6NUK!IK6FED!I6BNW!SM2IRZ!SK2AT!OH6RBG! !OH6RBV!OH6AAO!FE6CNB!K3WGF!LU7AKC! From: LU7AKC@LU7AKC.#COL.CF.ARG.SOAM To : NET9K6@WW TM531<>G3RUH 9600bd Hello, Ed. I received your mail today morningon Dec., 15. I'm using TM-531 on G3RUH type 9600bps modem. We ha local aria network using 9600bps mode.. It is working well,now. But, beginning of this network is not easy. You can connect G3RUH type modem as follow. 1. TXA Take off the shielding plate under the main PCB. Search for VR3 on main PCB. VR3 is indicated on PCB "MAX DEV" for adjust maximum deviation. The slider of this VR is connected to MD pin of VCO through C55 capacitor. Connect TXA to MD pinof VCO using resister(56k to 100kohm) and capacitor 0.1uF,connected in series,like follow. TXA ---II------/\/\/\----MD(VCO) 0.1uF 56k to 100kohm If you get weary to take off shielding plate,you may connect the TXA to hot end of VR3, using the resister and capacitor as aforesaid. TM-531 & 9600 Bps. 2. RXA Search for IC2 on main PCB. IC2 is a 16 pin hybrid IC for IF AMP and discriminator. You can discriminate pin number of this IC from printed symbol on the main PCB, and grand pin. Pin 2 and 16 is connected to grand. pin 5 is output for ceramic filter(CF1),and pin 7 is input from the filter. Connect RXA to pin 12(DET) directly. 9600bps on 1200MHz band is very difficult. Because,frequency stability is not enough. And, IF band width is not enough,too. We are developing SMC transceiver for G3RUH modem on 144,430,1200MHz band. It has high stability PLL OSC(about 1ppm) and good linearity modulator (voltage controlled X'tal OSC) Sammy JE1RLA @ JE1RLA Msg Nr. : 60276 Da : IK2MLT Per : TUTTI @ITA Tipo/status : BF Data/ora : 1102/0723 Dimensione : 3547 Titolo : Modifica 9600 baud per il TM 531 Bid (Mid) : 43222_IK2HDG PUT TM-531-1.ITA <<<<< G3RUH modem <-> TM-531 (to PE1KHX) >>>>> 1. TXA Il terminale Š connesso al potenziometro del VR3 (massima deviazione regolabile) attraverso C55 (1 uF). Puoi discriminare il terminale del VCO dal VR3. TXA ----------/\/\/\----------II---------- MO VCO 56 Kohm 0.1 uF Se sei scettico a rimuovere la lamiera di schermatura, puoi connettere il TXA al capocaldo del VR3 attraverso una resistenza ed un condensatore, come indicato sopra. 2. RXA Connetti al pin 12 dell'IC2. L'IC2, Š un IC ibrido per amplif. FM IF e modulatore di frequenza. L'IC non indica il numero di pin. Puoi distinguere il pin, dal pin di massa dell'IC. I pin 2 e 16 (l'ultimo), sono connessi a massa. Io connetto 2 TNC a questo RTX. Uno a 9600 bps e l'altro Š un Bell 202, 1200 bps. I due modem lavorano senza problema. Scritto da Sammy JE1RLA @ JE1RLA DESCRIZIONE DELL'IC2 (by ik2wak & ik2mlt) ==================== USO/FUNZIONI: Secondo oscillatore locale, mixer dell'amplificatore IF, rilevatore dell'amplificazione a bassa frequenza, rilevatore di rumore, interruttore dello squelch. OPERAZIONE\CONDIZIONE\COMPATIBILITA': (1) Primo ingresso del segnale IF (59.7 MHz) (3) Secondo oscillatore locale (59.245 MHz) (9) Uscita Busy (10) Controllo dello squelch (11) Uscita S-meter (14) Uscita RD (15) Uscita bassa frequenza [ I C 2 ] ------------------------------------------------------ | Q1 D1 Q5 | | NOISE AMP. NOISE DET. AF AMP. | | /-----\ -------- /-----\ | | | 2SC | | HSM | -------------o--->| 2SC | | | |4116 |----->| 88AS | | | |4116 |2 o GND | |(GR) | | | | | |(GR) | | | \-----/ -------- | | \-----/16o GND | /\ | | Q2 SW |Q3,4 AF FILTER | | \/ | /-----\ | -------- | | --------------------- | | DTC | | | 2SC |15| | 1| MIX, AMP, DET | | | 143 | \/ | 4116 |->o RA IF1 o->| IC1 : TK10487M |--o->| XU |---o-->|(GR)x2| | | | |<- \-----/ | | | | --------------------- | -------- | | | | | | | | | | | 3 | 5 | 7 | 6 | 8 | 12 |10 |9 |11 |14 |13 |4 | ---o---o---o---o---o-----o-----o---o--o---o---o---o--- X M I 8 C D S S S R N X I O F R D E Q C M D A O 2 T G Traduzione in italiano a cura di IK2WAK Mauro. Trascrizione del file a cura di IK2MLT Giuseppe. 73 e.......buon packet....... Msg Nr. : 142591 Da : IW3GRX Per : TEMP Tipo/status : PN Data/ora : 0129/1241 Dimensione : 1818 Bid (Mid) : 11519_IW3GRX Titolo : Modifica 9600 baud per il TM531 ************************************************************************* From: LU7AKC@LU7AKC.#COL.CF.ARG.SOAM To : NET9K6@WW TM531<>G3RUH 9600bd Hello, Ed. I received your mail today morning,on Dec., 15. I'm using TM-531 on G3RUH type 9600bps modem. We ha local aria network using 9600bps modem. It is working well,now. But, beginning of this network is not easy. You can connect G3RUH type modem as follow. 1. TXA Take off the shielding plate under the main PCB. Search for VR3 on main PCB. VR3 is indicated on PCB "MAX DEV" for adjust maximum deviation. The slider of this VR is connected to MD pin of VCO through C55 capacitor. Connect TXA to MD pin of VCO using resister(56k to 100kohm) and capacitor 0.1uF,connected in series,like follow. TXA ---II------/\/\/\----MD(VCO) 0.1uF 56k to 100kohm If you get weary to take off shielding plate,you may connect the TXA to hot end of VR3, using the resister and capacitor as aforesaid. TM-531 & 9600 Bps. 2. RXA Search for IC2 on main PCB. IC2 is a 16 pin hybrid IC for IF AMP and discriminator. You can discriminate pin number of this IC from printed symbol on the main PCB, and grand pin. Pin 2 and 16 is connected to grand. pin 5 is output for ceramic filter(CF1),and pin 7 is input from the filter. Connect RXA to pin 12(DET) directly. 9600bps on 1200MHz band is very difficult. Because,frequency stability is not enough. And, IF band width is not enough,too. We are developing SMC transceiver for G3RUH modem on 144,430,1200MHz band. It has high stability PLL OSC(about 1ppm) and good linearity modulator (voltage controlled X'tal OSC) Sammy JE1RLA @ JE1RLA ****************************************************************************