Audio output from FT790R receiver's Discriminator for 9600bauds
     ---------------------------------------------------------------
                  by Dave Hulatt G4WFQ
                  --------------------

Here is a very simple way of taking audio direct from the discriminator.
Connect a flying lead to pin 9 QO8 (MC3357P). (To save you having to burrow,
just solder a lead on the IC pin itself).
Drill a 1/4 hole in the case between standby and speaker sockets. Insert
phono socket here and connect the flying lead and suitable Gnd.
Thats it, job done.


    TxAudio input into FT790R Varactor diode for 9600 bauds
    -------------------------------------------------------
                  by Dave Hulatt G4WFQ
                  --------------------

Here are the details to input 9600 buads into the 790.
Firstly make up the following circuit.



                470n
 Txaudio----->---] ]------------------22k----->To FC53M
            :           :       :
            :          22k     ---
            :           :      --- 10p
            :           :        :
 TxAgnd--->----------------------------------->Chassis Gnd


Notes:-

When you make up the above circuit, you must use very short leads!!!!

FC53M is a Varactor diode which is D1031 on the FT790r diagram.


*****************************************************************************

Msg Nr.     : 32385 
Da          : LU7AKC
Per         : NET9K6@WW      
Tipo/status : B$
Data/ora    : 0815/0203
Dimensione  : 3016
Titolo      : FT790 & 9600 Bps
Bid (Mid)   : 12253_LU7AKC

9600 bauds mods for FT790r

From : G4WFQ @ GB7PET.21.GBR.EU

     Audio output from FT790R receiver's Discriminator for 9600bauds
     ---------------------------------------------------------------

Here is a very simple way of taking audio direct from the discriminator.
Connect a flying lead to pin 9 QO8 (MC3357P). (To save you having to burrow,
just solder a lead on the IC pin itself). Drill a 1/4 hole in the case between
standby and speaker sockets. Insert phono socket here and connect the flying
lead and suitable Gnd. Thats it, job done.


    TxAudio input into FT790R Varactor diode for 9600 bauds
    -------------------------------------------------------

Here are the details to input 9600 buads into the 790. Firstly make up the
following circuit.

                470n
 Txaudio----->---] ]------------------22k----->To FC53M
            :           :       :
            :          22k     ---
            :           :      --- 10p
            :           :        :
 TxAgnd--->----------------------------------->Chassis Gnd

Notes:-

When you make up the above circuit, you must use very short leads!!!!

FC53M is a Varactor diode which is D1031 on the FT790r diagram.

73 de Dave G4WFQ @GB7PET 30th May 1990

******************************************************************************



Msg Nr.     : 61156 
Da          : IW4DGM
Per         : 9600  @ITA     
Tipo/status : BF
Data/ora    : 1104/1211
Dimensione  : 1523
Titolo      : Modifica 9600 baud per l' FT 790
Bid (Mid)   : 11621_IW4CEA

  FT790R a 9600 bauds
  -------------------

RXaudio.
Prelevare il segnale direttamente dal discriminatore e' molto semplice.
Collegare il centrale di un cavetto schermato al pin 9 di QO8 (MC3357P).
(Potete saldare il cavetto direttamente sul pin del IC).
Effettuate un foro da 1/4 nell'apparato tra le prese standby e speaker.
Inseritevi una presa fono e collegatevi il centrale e la calza del cavetto
schermato.  E' tutto.

TXaudio.
Come iniettare il segnale dei 9600 buads nel 790.
Assemblate il seguente circuito.


                 470n
 TXaudio ---->----] ]------------------22k-----> al Diodo FC53M
             :           :       :
             :          22k     ---
             :           :      --- 10p
             :           :       :
 TXa GND ---->---------------------------------> Massa Chassis


Note:
-Costruendo il circuito qui sopra dovete usare collegamenti cortissimi !!!

-FC53M e' il diodo Varicup siglato D1031 nel circuito elettrico del FT790r.

-Se non desiderate forare l'apparato potere usare un cavetto schermato
 a piu' fili in cui potete collegare sia il segnale TXaudio che il RXaudio
 e relative masse quindi farlo fuoriuscire dall'apparato da qualche apertura.


 Dave Hullat G4WFQ
---------------------
 traduzione di
 Paolo IW4DGM @IW4CEA

Msg Nr.     : 142575
Da          : IW3GRX
Per         : TEMP  
Tipo/status : PN
Data/ora    : 0129/1237
Dimensione  : 1440
Bid (Mid)   : 11503_IW3GRX
Titolo      : Modifica 9600 baud per l'FT790

***************************************************************************

From: LU7AKC@LU7AKC.#COL.CF.ARG.SOAM
To  : NET9K6@WW

9600 bauds mods for FT790r

From : G4WFQ @ GB7PET.21.GBR.EU

     Audio output from FT790R receiver's Discriminator for 9600bauds
     ---------------------------------------------------------------

Here is a very simple way of taking audio direct from the discriminator.
Connect a flying lead to pin 9 QO8 (MC3357P). (To save you having to burrow,
just solder a lead on the IC pin itself). Drill a 1/4 hole in the case between
standby and speaker sockets. Insert phono socket here and connect the flying
lead and suitable Gnd. Thats it, job done.


    TxAudio input into FT790R Varactor diode for 9600 bauds
    -------------------------------------------------------

Here are the details to input 9600 buads into the 790. Firstly make up the
following circuit.

                470n
 Txaudio----->---] ]------------------22k----->To FC53M
            :           :       :
            :          22k     ---
            :           :      --- 10p
            :           :        :
 TxAgnd--->----------------------------------->Chassis Gnd

Notes:-

When you make up the above circuit, you must use very short leads!!!!

FC53M is a Varactor diode which is D1031 on the FT790r diagram.

73 de Dave G4WFQ @GB7PET 30th May 1990

***************************************************************************