[wsjt-devel] Does the FT8 signal spike at the beginning of each transmission?

Hi Paul, Thanks to you, too. Your comment on160m confirms my suspicions. ’m going to take a careful look at the ALC and see if I’ve got that right. Does anyone know how to entirely disable ALC on a FT5K? Or, is this just a dumb idea? 73, Ed W1KOK I am surprised and pleased that this qu

Re: [wsjt-devel] FT8 calling CQ

As fast as FT8 is, there are folks who want a QSO completed faster. It's a real pain, especially if I have to look up the guys call to get his Grid Square. And, if it's a portable operation, it's even more difficult. 73, Dick, W1KSZ Sent from Outlook ___

Re: [wsjt-devel] One small suggestion...

Hi Jim. Thank you so much. And I agree totaly about the issue of chasing dxpediions on multiple bands. 73s Den 12.04.2019 18:19, skrev James Shaver: A quick press of F4 clears the call. Retention of the call between band changes is useful if you’re chasing a DXPedition on multiple bands. Ji

[wsjt-devel] o3

https://www.ligo.caltech.edu/news/ligo20190411 ___ wsjt-devel mailing list wsjt-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/wsjt-devel

Re: [wsjt-devel] Does the FT8 signal spike at the beginning of each transmission?

Hello Ed- I am only familiar with adjusting those values through the front panel. My FT1000 is long gone. GL Bill W2PKY On Fri, Apr 12, 2019 at 2:36 PM Ed Stokes wrote: > Hi Bill, > > Another extremely helpful comment. > > As you may have noted in my previous post, I am not co-located with the

[wsjt-devel] FT8 calling CQ

I have noticed lately that when I send CQ on FT8 A few stations start their respond with the signal report not their grid square. Is there something here I do not understand? Tim N3JON ___ wsjt-devel mailing list wsjt-devel@lists.sourceforge.net h

[wsjt-devel] Does the FT8 signal spike at the beginning of each transmission?

Hi Bill, Another extremely helpful comment. As you may have noted in my previous post, I am not co-located with the equipment. Is it possible to access this menu via the serial interface? Otherwise, I will have to wait until next month when I am at home again and have physical access to the r

[wsjt-devel] Does the FT8 signal spike at the beginning of each transmission?

John, Many, many thanks for this helpful idea. I am not conversant with Hamlib, so this will take some study on my part. 73, Ed W1KOK > On Apr 12, 2019, at 10:36 AM, John Nelson via wsjt-devel > wrote: > > Ed, > > I use "Hamlib NET Rigctl” as rig on my station. (I use a Kenwood TS-870s.)

Re: [wsjt-devel] Does the FT8 signal spike at the beginning of each transmission?

Hi Paul, Good info (and similar to my own line of thinking in the response I just sent on ALC Overshoot) but I’d recommend one minor change: Your statement “The best way to avoid spikes in any rig using FT8...” - I’d be cautious with the “any rig” generalization. Some of the popular radios on

Re: [wsjt-devel] Does the FT8 signal spike at the beginning of each transmission?

This almost sounds partially like ALC Overshoot that is more of a problem with some radios than with others (it was really nasty on a TS590 that a friend had sent to me to test out). The pure 8-tone FSK signal does seem to make this more obvious on some of my radios than others. Some of my radi

Re: [wsjt-devel] Does the FT8 signal spike at the beginning of each transmission?

Start-of- transmission power spikes will almost certainly occur on any radio which is using traditional alc to control output power. Spike severity is directly linked to the amount of gain reduction the alc is giving. For example, a 100w rig with power output reduced to 5w using a power control

Re: [wsjt-devel] Does the FT8 signal spike at the beginning of each transmission?

Ed, I use "Hamlib NET Rigctl” as rig on my station. (I use a Kenwood TS-870s.) And then run rigctld-wsjtx in the background to do the rig control from my Mac. This way I can also control the rig’s RF Power Level from another computer. I think this is what you want to do with the routine

Re: [wsjt-devel] Does the FT8 signal spike at the beginning of each transmission?

>From W8JI.com, maybe 5000 has similar adjustments. If the IF Transmit Gain was too high the 1000 would exhibit huge power spikes on key down or pressing the mike PTT button. Transmit Gain Menus The FT-1000 MK V has hidden transmit gain menus. They are accessed by pushing and holding FAST and LO

[wsjt-devel] Does the FT8 signal spike at the beginning of each transmission?

Hi Frank, Many thanks for your input. For you and for others who may read this thread, here is some additional information. I think there are several problems working together here. As you said, I think the FTdx-5000 is doing something nasty. Even when I limit the power setting of the rig I

Re: [wsjt-devel] Does the FT8 signal spike at the beginning of each transmission?

Some rigs, even high-end rigs including the FTdx5000, exhibit a spike on initial transmit. I noticed it mostly with the amp. The power would surge briefly, and then return to the dial value. I suspect the combination of the surge and a bit of RFI is causing the problem. I suggest an opto-isolator

Re: [wsjt-devel] One small suggestion...

A quick press of F4 clears the call. Retention of the call between band changes is useful if you’re chasing a DXPedition on multiple bands. Jim S. N2ADV > On Apr 12, 2019, at 10:59 AM, Svend Aage Jessen wrote: > > Would be nice, though not nessersary, to clear dx call also after > exit the p

[wsjt-devel] One small suggestion...

Would be nice, though not nessersary, to clear dx call also after exit the programme, and changing the band. Of course in those cases where there still is a dx call present in the dx call field. Could this be an idea? -- 73 de LA6YJA la6...@savednet.com __

[wsjt-devel] Does the FT8 signal spike at the beginning of each transmission?

Hi Bill Many thanks once again for your very generous reply to my query. I am running an FTdx-5000 barefoot into a full size 160m dipole and using CAT control. The speech processor is turned off. Audio is being fed via the front panel mic jack from a Mac Mini. The A3J TX passband is set at 4

Re: [wsjt-devel] Does the FT8 signal spike at the beginning of each transmission?

On 12/04/2019 07:05, Ed Stokes wrote: I’m curious about something I observe about the FT8 signal modulation. It appears to produce a pronounced spike in the audio at the beginning of each 15 second transmission. When I operate on 160, 80 and 40 meters especially this spike will cause the prog

Re: [wsjt-devel] Does the FT8 signal spike at the beginning of each transmission?

Hi, I haven't any RFI issue but I noted the spike at the beginning of any trasmission. I use an Icom 7610 and on the waterfall I clearly see a kind of spike that occupies the complete bandwith of audio channel. In my case 100-2800 Hz. I can see it at any TX start. I use the USB audio connectio