[digitalradio] Re: TRANSMIT TROUBLES
Hi Bill, I was looking at the FT-920 manual aand it seems like you have to set the mode to DATA-USB when using the data jack. There are some other settings after that that I didn't really follow since I've never had my hands on that radio. See pages 55 and 56 of the manual and maybe it will make sense to you or your friend. I think the manual was written before PSK31 and the other soundcard modes became popular, and they don't give specific help. Mike kc9doa --- In digitalradio@yahoogroups.com, n...@... wrote: Howdy Folks: I am trying to help a good friend of mine get her radio setup for running PSK and other digital modes using MixW Software.Her radio is a Yaesu FT-920 and we're using the DATA connection on the rear of the Yaesu and the CAT setup to operate things. So far we have it receiving PSK31 in USB mode just fine and I've double checked on the rear and the switch is in the AFSK MODE, not FSK. However, we still cannot get it to transmit. The software seems to be working fine with the CAT for if you move the frequency on the radio the waterfalls and frequency on the software change. If you use F-9 it keys the radio up, but there is NO transmitted audio! If we hit F-10 it goes back into receive mode. Anyone using this type of setup that could shed some light? I'm open for ANY/ALL suggestions. :-) 73 de NY2U Bill **The Average US Credit Score is 692. See Yours in Just 2 Easy Steps! (http://pr.atwola.com/promoclk/100126575x1221621489x1201450100/aol?redir=http:%2F%2Fwww.freecreditreport.com%2Fpm%2Fdefault.aspx%3Fsc%3D668072%26h mpgID%3D62%26bcd%3DAprilAvgfooterNO62)
[digitalradio] Re: TRANSMIT TROUBLES
I assume you may have seen this... for that radio Also documented is the PC-Radio interface I have constructed for which I make little or no claim of originality! Radio Set up Quite simply put, the manual that came with the radio in some areas is at best misleading, and in others actually wrong. Lets start with the basics. When the radio is in data mode there are two actual modes available. One is DATA LSB where both the DATA and LSB indicators are showing, and the other DATA USB where both the DATA and USB indicators are showing. What the manual doesn't tell you is that DATA LSB is FSK RTTY only, and DATA USB is AFSK RTTY and also suitable for use on all sound card based digital modes. On the back of the radio is an AFSK-FSK switch. All this switch does is route pin one of the data port either to the audio circuitry when in AFSK or to the tone generator when in FSK. So, for most of us this switch needs to be in AFSK mode and the radio in DATA USB. The actual sideband that the radio is in is controlled by menu item U-46. For typical RTTY operation, this needs to be set to 2125-L, this sets the carrier injection up for an offset of 2.125 kHz in a pseudo-LSB mode, so that the transceiver actually is operating in LSB mode even though the display still indicates DATA USB. Conversely setting menu item U-46 to 2125-U will put the radio in USB mode. It would appear that many digimode operators have experienced problems trying to run the FT-920 in true Data mode. Reports I have seen include I used the Yaesu Data port on the original design but had to disconnect the data in line and move it to the Yaesu phone patch in jack. I discovered that the data port is only functional in the data mode (not in standard modes like USB and LSB) and the data mode adds information to the data in line, which causes problems. It is worth noting at this point that the audio in via the data port is only active when the radio is in Data mode. However, the use of the data port has a number of advantages over using the mic socket or phone patch connections, here are some of the best: 1. The mic socket is not active in data mode, so you don't need to plug the mic back in every time you wish to operate phone and rip it out again when you go back onto digimodes. The mic gain control can be left set for phone use. 2. There is also no risk at all of transmitting in data modes with the speech processor switched on -- go on we've all done it -- it's not active. 3. In DATA mode the Narrow CW filter is active when the narrow button is pressed. This is not available in true SSB modes. In QRM type conditions on PSK or RTTY this is very valuable. You tune the signal in, hit the narrow button and then wind the shift control until the signal is loud and clear. What QRM? Radio PC Interface I wanted to build an interface for the Radio to PC that would work on all sound card based digimodes, but it seemed a useful feature to add a keyboard CW facility via the Comm port DTR line with PTT for all modes utilising the RTS line. A search of the web located the following useful site: http://www.qsl.net/wm2u/inter_ft.html From here there is a link to KC7DS's web site where a suitable interface can be found: http://www.qsl.net/kc7dh/sndcrd.htm
[digitalradio] Re: TRANSMIT TROUBLES
So, I take from this that you need to make sure that the radio is data usb , is it ? I think if the rig is in plain USB mode, audio is not passed from the data port. Andy.
Re: [digitalradio] Re: TRANSMIT TROUBLES
Yes, I remember that message some time ago and it was useful. In a message dated 4/14/2009 9:19:14 P.M. Eastern Daylight Time, k3uka...@gmail.com writes: I assume you may have seen this... for that radio **The Average US Credit Score is 692. See Yours in Just 2 Easy Steps! (http://pr.atwola.com/promoclk/100126575x1221421325x1201417411/aol?redir=http:%2F%2Fwww.freecreditreport.com%2Fpm%2Fdefault.aspx%3Fsc%3D668072%26h mpgID%3D62%26bcd%3DAprilAvgfooterNO62)
Re: [digitalradio] Re: TRANSMIT TROUBLES
Yeptriple checked this ...its in DATA-USB mode In a message dated 4/14/2009 9:20:42 P.M. Eastern Daylight Time, k3uka...@gmail.com writes: So, I take from this that you need to make sure that the radio is data usb , is it ? I think if the rig is in plain USB mode, audio is not passed from the data port. Andy. **The Average US Credit Score is 692. See Yours in Just 2 Easy Steps! (http://pr.atwola.com/promoclk/100126575x1221421325x1201417411/aol?redir=http:%2F%2Fwww.freecreditreport.com%2Fpm%2Fdefault.aspx%3Fsc%3D668072%26h mpgID%3D62%26bcd%3DAprilAvgfooterNO62)
Re: [digitalradio] Re: TRANSMIT TROUBLES
This is really simple, hope I do not insult you.. Have you double checked that your line out from the sound card is actually working and the levels from it are sufficient to drive the radio ? I have run in to some laptops , and some Compaq desktops, that have insufficient audio output levels and some form of amplification is needed. Also, does FSK RTTY work OK ? Andy
Re: [digitalradio] Re: TRANSMIT TROUBLES
Last question first...I have NOT tried the FSK RTTY at all. I will do that and let you know tomorrow. Computer wiz I'm not Andy, so I could screw anything up! :-) I have tried moving the sliders through there range and no luck. How else can you test the audio output level? In a message dated 4/14/2009 9:33:42 P.M. Eastern Daylight Time, k3uka...@gmail.com writes: This is really simple, hope I do not insult you.. Have you double checked that your line out from the sound card is actually working and the levels from it are sufficient to drive the radio ? I have run in to some laptops , and some Compaq desktops, that have insufficient audio output levels and some form of amplification is needed. Also, does FSK RTTY work OK ? Andy **The Average US Credit Score is 692. See Yours in Just 2 Easy Steps! (http://pr.atwola.com/promoclk/100126575x1221421325x1201417411/aol?redir=http:%2F%2Fwww.freecreditreport.com%2Fpm%2Fdefault.aspx%3Fsc%3D668072%26h mpgID%3D62%26bcd%3DAprilAvgfooterNO62)
