Yaesu FT-790RII (FT 790 R II FT790RII) user and service manual, modifications

   
 
ham | links
 Welcome to Motorola  submit to reddit
27 November 2024, 1:57 UTC 


Transceivers


Motorola

Yaesu FT-790RII (FT 790 R II FT790RII)
FT-790RII
Programming interface schematics for Yaesu FT-790RII (FT 790 R II FT790RII) : programming interface
Programming software (MARS/CAP/extend TX modification) for Yaesu FT-790RII (FT 790 R II FT790RII) : 
PDF User Manual for Yaesu FT-790RII (FT 790 R II FT790RII) : 

Mods for Yaesu FT-790RII (FT 790 R II FT790RII) :
   Yaesu FT-790RII (FT 790 R II FT790RII) Increasing the Power
   Yaesu FT-790RII (FT 790 R II FT790RII) Reducing the volume of the BEEP and sidetone
   Yaesu FT-790RII (FT 790 R II FT790RII) 9600 bauds mods
   Yaesu FT-790RII (FT 790 R II FT790RII) FT-790RII + FT-290RII fur 9600 bps
   Yaesu FT-790RII (FT 790 R II FT790RII) FT-790RI und FT290RI fur 9k9
   Yaesu FT-790RII (FT 790 R II FT790RII) receiver's Discriminator for 9600bauds

Yaesu FT-790RII (FT 790 R II FT790RII) technical specifications :  Yaesu FT-790RII (FT 790 R II FT790RII) technical specifications



Yaesu FT-790RII (FT 790 R II FT790RII) 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!!!!


More Yaesu Radioamateur Transceivers

Yaesu VHF/UHF Handhelds:
    Yaesu FT-10R (FT 10 R FT10R) service manual and specs
    Yaesu FT-11R (FT 11 R FT11R) service manual and specs
    Yaesu FT-23R (FT 23 R FT23R) service manual and specs
    Yaesu FT-26 (FT 26 FT26) service manual and specs
    Yaesu FT-33R (FT 33 R FT33R) service manual and specs
    Yaesu FT-40R (FT 40 R FT40R) service manual and specs
    Yaesu FT-41R (FT 41 R FT41R) service manual and specs
    Yaesu FT-50R (FT 50 R FT50R) service manual and specs
    Yaesu FT-51R (FT 51 R FT51R) service manual and specs
    Yaesu FT-73R (FT 73 R FT73R) service manual and specs
    Yaesu FT-76 (FT 76 FT76) service manual and specs
    Yaesu FT-104 (FT 104 FT104) service manual and specs
    Yaesu FT-202R (FT 202 R FT202R) service manual and specs
    Yaesu FT-203R (FT 203 R FT203R) service manual and specs
    Yaesu FT-207R (FT 207 R FT207R) service manual and specs
    Yaesu FT-208R (FT 208 R FT208R) service manual and specs
    Yaesu FT-209R (FT 209 R FT209R) service manual and specs
    Yaesu FT-209RH (FT 209 RH FT209RH) service manual and specs
    Yaesu FT-290R (FT 290 R FT290R) service manual and specs
    Yaesu FT-290R II (FT 290 RII FT290RII) service manual and specs
    Yaesu FT-404R (FT 404 R FT404R) service manual and specs
    Yaesu FT-411MKII (FT 411 MKII FT411MKII) service manual and specs
    Yaesu FT-411R (FT 411 R FT411R) service manual and specs
    Yaesu FT-415 (FT 415 FT415) service manual and specs
    Yaesu FT-416 (FT 416 FT416) service manual and specs
    Yaesu FT-470 (FT 470 FT470) service manual and specs
    Yaesu FT-530 (FT 530 FT530) service manual and specs
    Yaesu FT-690R (FT 690 R FT690R) service manual and specs
    Yaesu FT-690R II (FT 690 RII FT690RII) service manual and specs
    Yaesu FT-703R (FT 703 R FT 703R) service manual and specs
    Yaesu FT-708R (FT 708 R FT 708R) service manual and specs
    Yaesu FT-709R (FT 709 R FT 709R) service manual and specs
    Yaesu FT-727R (FT 727 R FT727R) service manual and specs
    Yaesu FT-790R (FT 790 R FT790R) service manual and specs
    Yaesu FT-790R II (FT 790 R II FT790RII) service manual and specs
    Yaesu FT-811 (FT 811 FT811) service manual and specs
    Yaesu FT-815 (FT 815 FT815) service manual and specs
    Yaesu FT-816 (FT 816 FT816) service manual and specs
    Yaesu FT-817 (FT 817 FT817) service manual and specs
    Yaesu FT-817ND (FT 817 ND FT817ND) service manual and specs
    Yaesu FT-911 (FT 911 FT911) service manual and specs
    Yaesu FT-2303 R (FT 2303 R FT2303R) service manual and specs
    Yaesu VX-1 R (VX 1 R VX1R) service manual and specs
    Yaesu VX-2 R (VX 2 R VX2R) service manual and specs
    Yaesu VX-5 R (VX 5 R VX5R) service manual and specs
    Yaesu VX-7 R (VX 7 R VX7R) service manual and specs
    Yaesu FT-60R (FT 60 R FT60R) service manual and specs
    Yaesu VX-6 R (VX 6 R VX6R) service manual and specs
    Yaesu VX-110 (VX 110 VX110) service manual and specs
    Yaesu VX-150 (VX 150 VX150) service manual and specs
    Yaesu VX-120 (VX 120 VX120) service manual and specs
    Yaesu VX-170 (VX 170 VX170) service manual and specs
    Yaesu VX-3R (VX 3 R VX3R) service manual and specs
    Yaesu FT-1DR (FT 1 DR FT1DR) service manual and specs
    Yaesu FT-1DE (FT 1 DE FT1DE) service manual and specs
    Yaesu VX-8R (VX 8 R VX8R) service manual and specs
    Yaesu VX-8DR (VX 8 DR VX8DR) service manual and specs
    Yaesu VX-8GR (VX 8 GR VX8GR) service manual and specs
    Yaesu FT-252 (FT 252 FT252) service manual and specs
    Yaesu FT-257 (FT 257 FT257) service manual and specs
    Yaesu FT-250R (FT 250 R FT250R) service manual and specs

Yaesu VHF/UHF Mobile Transceivers:
    Yaesu CPU-2500R (CPU 2500R CPU2500R) service manual and specs
    Yaesu FT-2F (FT 2F FT2F) service manual and specs
    Yaesu FT-90R (FT 90R FT90R) service manual and specs
    Yaesu FT-211RH (FT 211RH FT211RH) service manual and specs
    Yaesu FT-212RH (FT 212RH FT212RH) service manual and specs
    Yaesu FT-215 (FT 215 FT215) service manual and specs
    Yaesu FT-224 (FT 224 FT224) service manual and specs
    Yaesu FT-227R (FT 227R FT227R) service manual and specs
    Yaesu FT-230R (FT 230R FT230R) service manual and specs
    Yaesu FT-270R (FT 270R FT270R) service manual and specs
    Yaesu FT-270RH (FT 270RH FT270RH) service manual and specs
    Yaesu FT-277R (FT 277R FT277R) service manual and specs
    Yaesu FT-480R (FT 480R FT480R) service manual and specs
    Yaesu FT-680R (FT 680R FT680R) service manual and specs
    Yaesu FT-711RH (FT 711RH FT711RH) service manual and specs
    Yaesu FT-712RH (FT 712RH FT712RH) service manual and specs
    Yaesu FT-715H (FT 715H FT715H) service manual and specs
    Yaesu FT-720R (FT 720R FT720R) service manual and specs
    Yaesu FT-730R (FT 730R FT730R) service manual and specs
    Yaesu FT-770RH (FT 770RH FT770RH) service manual and specs
    Yaesu FT-780R (FT 780R FT780R) service manual and specs
    Yaesu FT-912R (FT 912R FT912R) service manual and specs
    Yaesu FT-1500M (FT 1500M FT1500M) service manual and specs
    Yaesu FT-1802 (FT 1802 FT1802) service manual and specs
    Yaesu FT-2200 (FT 2200 FT2200) service manual and specs
    Yaesu FT-2311R (FT 2311R FT2311R) service manual and specs
    Yaesu FT-2312R (FT 2312R FT2312R) service manual and specs
    Yaesu FT-2400 (FT 2400 FT2400) service manual and specs
    Yaesu FT-2500M (FT 2500 M FT2500M) service manual and specs
    Yaesu FT-2600M (FT 2600 M FT2600M) service manual and specs
    Yaesu FT-2700R (FT 2700 R FT2700R) service manual and specs
    Yaesu FT-2700RH (FT 2700 RH FT2700RH) service manual and specs
    Yaesu FT-2800M (FT 2800 M FT2800M) service manual and specs
    Yaesu FT-3000M (FT 3000 M FT3000M) service manual and specs
    Yaesu FT-3700 (FT 3700 FT3700) service manual and specs
    Yaesu FT-3800 (FT 3800 FT3800) service manual and specs
    Yaesu FT-3900 (FT 3900 FT3900) service manual and specs
    Yaesu FT-4700RH (FT 4700 RH FT4700RH) service manual and specs
    Yaesu FT-5100 (FT 5100 FT5100) service manual and specs
    Yaesu FT-5200 (FT 5200 FT5200) service manual and specs
    Yaesu FT-6200 (FT 6200 FT6200) service manual and specs
    Yaesu FT-7100M (FT 7100 M FT7100M) service manual and specs
    Yaesu FT-7200 (FT 7200 FT7200) service manual and specs
    Yaesu FT-7400H (FT 7400 H FT7400H) service manual and specs
    Yaesu FT-7800 Older (FT 7800 Older FT7800Older) service manual and specs
    Yaesu FT-7800H (FT 7800 H FT7800H) service manual and specs
    Yaesu FT-7800R (FT 7800 R FT7800R) service manual and specs
    Yaesu FT-8000R (FT 8000 R FT8000R) service manual and specs
    Yaesu FT-8100R (FT 8100 R FT8100R) service manual and specs
    Yaesu FT-8500 (FT 8500 FT8500) service manual and specs
    Yaesu FT-8800R (FT 8800 R FT8800R) service manual and specs
    Vertex Standard VM-3500E (Vertex Standard VM3500E VertexStandardVM3500E) service manual and specs
    Vertex Standard VX-1700 (VX 1700 VX1700) service manual and specs
    Yaesu FTM-10R (FTM 10 R FTM10R) service manual and specs
    Yaesu FTM-400D (FTM 400 D FTM400D) service manual and specs
    Yaesu FTM-400DR (FTM 400 DR FTM400DR) service manual and specs
    Yaesu FT-1900R (FT 1900 R FT1900R) service manual and specs
    Yaesu FT-2900R (FT 2900 R FT2900R) service manual and specs
    Yaesu FT-7900R (FT 7900 R FT7900R) service manual and specs

Yaesu Base VHF/UHF:
    Yaesu FT-2AUTO (FT 2AUTO FT2AUTO) service manual and specs
    Yaesu FT-221R (FT 221R FT221R) service manual and specs
    Yaesu FT-225RD (FT 225RD FT225RD) service manual and specs
    Yaesu FT-620B (FT 620B FT620B) service manual and specs
    Yaesu FT-726R (FT 726R FT726R) service manual and specs
    Yaesu FT-736R (FT 736R FT736R) service manual and specs
    Yaesu FT-Sigmasizer 200R (FT Sigmasizer 200R FTSigmasizer200R) service manual and specs

Yaesu HF and More Transceivers:
    Yaesu FT-One (FT One FTOne) service manual and specs
    Yaesu FT-7 (FT 7 FT7) service manual and specs
    Yaesu FT-7B (FT 7B FT7B) service manual and specs
    Yaesu FT-50 (FT 50 FT50) service manual and specs
    Yaesu FT-75 (FT 75 FT75) service manual and specs
    Yaesu FT-77 (FT 77 FT77) service manual and specs
    Yaesu FT-100(older) (FT 100(older) FT100(older)) service manual and specs
    Yaesu FT-100 (FT 100 FT100) service manual and specs
    Yaesu FT-100D (FT 100 D FT100D) service manual and specs
    Yaesu FT-101 (FT 101 FT101) service manual and specs
    Yaesu FT-101B (FT 101B FT101B) service manual and specs
    Yaesu FT-101E (FT 101E FT101E) service manual and specs
    Yaesu FT-101EE (FT 101EE FT101EE) service manual and specs
    Yaesu FT-101ZD (FT 101ZD FT101ZD) service manual and specs
    Yaesu FT-102 (FT 102 FT102) service manual and specs
    Yaesu FT-107 (FT 107 FT107) service manual and specs
    Yaesu FT-200 (FT 200 FT200) service manual and specs
    Yaesu FT-201 (FT 201 FT201) service manual and specs
    Yaesu FT-201S (FT 201S FT201S) service manual and specs
    Yaesu FT-250 (FT 250 FT250) service manual and specs
    Yaesu FT-301 (FT 301 FT301) service manual and specs
    Yaesu FT-301D (FT 301D FT301D) service manual and specs
    Yaesu FT-301S (FT 301S FT301S) service manual and specs
    Yaesu FT-600 (FT 600 FT600) service manual and specs
    Yaesu FT-650 (FT 650 FT650) service manual and specs
    Yaesu FT-655 (FT 655 FT655) service manual and specs
    Yaesu FT-655S (FT 655S FT655S) service manual and specs
    Yaesu FT-707 (FT 707 FT707) service manual and specs
    Yaesu FT-747GX (FT 747GX FT747GX) service manual and specs
    Yaesu FT-747SX (FT 747SX FT747SX) service manual and specs
    Yaesu FT-757GX (FT 757GX FT757GX) service manual and specs
    Yaesu FT-757GX II (FT 757GX II FT757GXII) service manual and specs
    Yaesu FT-767GX (FT 767GX FT767GX) service manual and specs
    Yaesu FT-840 (FT 840 FT840) service manual and specs
    Yaesu FT-847 (FT 847 FT847) service manual and specs
    Yaesu FT-857 (FT 857 FT857) service manual and specs
    Yaesu FT-857D (FT 857 D FT857D) service manual and specs
    Yaesu FT-890 (FT 890 FT890) service manual and specs
    Yaesu FT-897 (FT 897 FT897) service manual and specs
    Yaesu FT-897D (FT 897 D FT897D) service manual and specs
    Yaesu FT-900 (FT 900 FT900) service manual and specs
    Yaesu FT-901DM (FT 901DM FT901DM) service manual and specs
    Yaesu FT-902DM (FT 902DM FT902DM) service manual and specs
    Yaesu FT-920AF (FT 920AF FT920AF) service manual and specs
    Yaesu FT-980 (FT 980 FT980) service manual and specs
    Yaesu FT-990 (FT 990 FT990) service manual and specs
    Yaesu FT-1000 (FT 1000 FT1000) service manual and specs
    Yaesu FT-1000D (FT 1000 D FT1000D) service manual and specs
    Yaesu FT-1000MP (FT 1000MP FT1000MP) service manual and specs
    Yaesu FT-1000MP Mark V (FT 1000 MP Mark V FT1000MPMarkV) service manual and specs
    Yaesu FT-1000MP Mark V Field (FT 1000 MP Field Mark V FT1000MPMarkVField) service manual and specs
    Yaesu FT-2000 (FT 2000 FT2000) service manual and specs
    Yaesu FT-2000D (FT 2000 D FT2000D) service manual and specs
    Yaesu FT-8900R (FT 8900 R FT8900R) service manual and specs
    Yaesu FT-DX400 (FT DX400 FTDX400) service manual and specs
    Yaesu FT-DX401 (FT DX401 FTDX401) service manual and specs
    Yaesu FT DX-9000 Contest (FT DX 9000 Contest FTDX9000Contest) service manual and specs
    Yaesu FT DX-9000D (FT DX 9000 D FTDX9000D) service manual and specs
    Yaesu FT DX-9000 MP (FT DX 9000 MP FTDX9000MP) service manual and specs
    Yaesu FT-950 (FT 950 FT950) service manual and specs
    Yaesu FT DX-1200 (FT DX 1200 FTDX1200) service manual and specs
    Yaesu FT DX-5000 (FT DX 5000 FTDX5000) service manual and specs
    Yaesu FT DX-5000D (FT DX 5000 D FTDX5000D) service manual and specs
    Yaesu FT DX-5000MP (FT DX 5000 MP FTDX5000MP) service manual and specs
    Yaesu FT-450 (FT 450 FT450) service manual and specs
    Yaesu FT-450D (FT 450 D FT450D) service manual and specs
    Yaesu FT DX-3000 (FT Dx 3000 FTDX3000) service manual and specs