Chas, Thanks for the comments. Allow me to answer inline below.
> -----Original Message----- > From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] > radio.biz] On Behalf Of Charles Greene > Sent: Tuesday, April 25, 2006 8:43 AM > To: [email protected] > Subject: [Flexradio] Observations on PSK31 and other digital modes on the > SDR Console > --snip-- > > I am using the > SDR v1.6.0, WA6AHL Apr 23 release. I am using the FireBox sound card > sampling at 96000. The VAC and virtual com ports work well except > the CAT fails after a period of time(known bug). The first work > around I need is to reset CAT when it fails. [Eric] This is a known bug as noted and something that we have been hunting for some time. In the meantime, we do have a workaround in our latest source that should take care of it (see Bob Tracy's note). > I have Var 2 set at > 1100 -> 1300 Hz. However, the click tuning will not center the > frequency at 1200 Hz any more. [Eric] This sounds like a bug in the click tuning. We will need to look into this. > There is a > noticeable time delay between the time the signal first appears on > the Console waterfall and the MixW waterfall (or the MixW spectrum > for that matter). So you have to wait until it appears on the MixW > display, then click it to lock in and start copying. [Eric] This has been SIGNIFICANTLY improved in the most recent alpha releases on the SVN server. These changes will be reflected in the v1.6.1 release. > There is also the issue of color resolution on the SDR > waterfall. MixW has 9 colors for the various signal levels on the > waterfall; the SDR console has three. [Eric] Actually, our waterfall uses a gradient between two colors for our waterfall. And you can set the dynamic range to adjust the intensity to your liking using the Low and High level controls on the Setup Form -> Display -> Waterfall section. The color for each pixel is calculated as follows: If the signal level for the peak bin represented by the pixel is below the low signal level, it just uses the low color. Similarly, if the signal level is above the high threshold, it just uses the high color. If the signal level is in between the two levels, it uses a gradient between either the low or high color (whichever is closest) and the mid color. This is not to say that this could not be improved, but this is clearly much more than 3 colors. > What is needed is a > replication of the received signal on the transmitted display to the > extent that the levels of the sidebands can be observed. [Eric] I completely agree that we need some way of calibrating the transmit display. However, there is not a way that I am aware of to match varying receive signals (especially weak signals) to max level output transmit levels. > All of these items are offered in the spirit of improvements to the > basic SDR console to make it undoubtedly the finest digital mode > transceiver ever. Some others may have some other ideas of what are > basically enhancements to the SDR Console, and should submit them to > get them included. > > 73, Chas w1cg [Eric] We always appreciate input and especially appreciate your detailed descriptions of the issues you have been facing. We fully intend for this to become the best digital mode radio in the world (among other things). ;) Eric Wachsmann FlexRadio Systems
