I thought I would go back to square one with this issue. I decided to return to using my second sound card (Audigy 2 ZS) for digital modes using VCOM and actual physical cables to see if I could duplicate the pulsing issue. After setting up the software (MixW and PowerSDR) I had no pusling problem at all with either version 1.4.4 or 1.4.5 Preview 6.
I tried every digital mode many many times with long cq's and test transmissions without a the occurrence of a single pulse. It would appear that the problem may be somehow related to the use of the VAC. I thought about uninstalling and reinstalling the VAC software but I was not able to locate the uninstall file/instructions. WIll keep looking though.
Just thought I would report my progress to the list.
Regards,
Serge
VA3SB
VA3SB
SERGE BERTUZZO <[EMAIL PROTECTED]> wrote:
Further to my email below, I am continue to experience the pulsing problem on TX when using the SDR in conjunction with MIxW. I have tried both Preview 5 and Preview 6 and I experience the same problem. I do have some additional info to share with a view to solving this problem.The pulsing does not appear to occur when I transmit the first time (just after I activate MixW) However,if I transmit twice in a row the pulsing begins on the second transmission and by the third transmission and beyond, it is pulsing at a rate of approx 1 pulse per second.All, software VCOM/VAC and PowerSDR I believe are set up as per instructions (Bob - N4HY) . Hardware wise I only have the D44 connected to the SDR and computer - everything else has been removed from the computer.Any suggestions/guidance would be appreciated. Thanks.SergeVA3SV
SERGE BERTUZZO <[EMAIL PROTECTED]> wrote:Hello to the list. I hope someone can shed some light on a problem that I am experiencing. The setup here is a Pentium 4 3GHz - 512 BM - Delta 44 , VAC and VCOM. I am using MixW for my digital modes.I am finding that while I am able to control the MixW software and decode digital transmissions, I seem to experience a pulsing action (approx 1 sec intervals) on the transmitted signal. On PSK or RTTY you can also clearly notice the pulsing action on the panadapter display of the PowerSDR console.I thought that this problem could be related to the VAC settings. I adjusted the buffer size in the SDR VAC setup from 512 - 2048. With the lower setting the pulsing (still occurs but not as frequent) however it is much more pronounced (almost seems stronger as well) when I have the buffer set to the 2048 setting.I thought that perhaps I had a SWR problem with the antenna so I tested the SDR with a dummy load and experienced the same problem. I have monitored my signals on another receiver and am able to hear the pulsing action.Any help/guidance would be greatly appreciated. Thank you all in advance.Regards,SergeVA3SB_______________________________________________
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