SRv6.3 RXTX + Mobo v3.6 up and running
- Hi All
Well the Mobo 3.6 is up and working with my SRv6.3, UBW and PowerSDR -iq. Image rejection is sharp and deep on all bands, including 10m. After having built the Mobo I better appreciate the thought that went into its design, not least of which is keeping line distances balanced while matching up to the SRv6.3 headers. Great job Alex! Thank you. Thank you also Art for the careful kit marshalling and labeling; no doubt very labour intensive.
I still need to resolve some issues:
1) Using the UBW with Alex's PIC emulation (rev 15.10) of Fred's ATTiny code (I think), the "smooth tune" behavior is a little odd. After launch of PowerSDR iq (all hardware on), and after clicking start, assume the start up operating frequency to be 7.040 MHz, receiver works well. Tune step is 50 Hz. If the mouse wheel is rolled such that frequency decreases, the usual jagged display symptoms are evidence of the Si570 core restarting on every wheel click, i.e every 50 Hz change in frequency. Smooth tune is not in operation in these circumstances. However, in contrast, if the mouse wheel is rolled such that the frequency increases, tuning is as smooth as silk. What appears to be happening is that the startup frequency is regarded as the lower boundary of the 3500 ppm "smooth tune" zone. Would it not be better for the startup frequency to be located in the centre of the 3500 ppm zone? Further, if an Si570 core restart event occurs, take the opportunity to reset to the centre frequency of the 3500 ppm smooth tune zone.
2) In PowerSDR iq, Christos allows the setup of BPF/LPF frequency cut-off points per band, with the related binary code of the two bits for selecting the appropriate filters in the Mobo. I set up 160m with select value 0 (00b), band group 80m/60m/40m with select value 1(10b), Band group 30m/20m/17m with select value 2(01b), and band group 3 15m/12m/10m with select value 3(11b). Select lines S0 and S1 correspond with RA0 and RA1 on the UBW. All bands switch properly, except 160m band. For some weird reason I get 10bin instead of 00bin out of UBW.
3) The RB6 and RB7 lines on UBW are designated paddle dit and paddle dah respectively. While PowerSDR iq does respond to these inputs, behavior is not quite normal (as compared with USB I2C interface for example). The side tone (MON) fails to sound, and no carrier is output to the sound card. What am I doing wrong?
Finally, I have a question. I have a HPUSB from Dave Brainerd which I would like to play with. Does PowerSDR iq support LPF/BPF switching through the HPUSB board?
Isn't ham radio fun !
- alexle188 wrote:
>OK, fires up here on wine also.
> --- In firstname.lastname@example.org <mailto:softrock40%40yahoogroups.com>,
> "Eric Stockenstrom" <zs6buj@...> wrote:
>> Hi Alex, is your code in the public domain? Which compiler are you using?
> The development source files are in FILES->9V1AL->UBW Emulator. I use
> the free development environment and C compiler from Microchip:
> IDE v8.14
> C18 Compiler Student Edition
> USB Framework v2.3.1
> You can download all these from Microchip.
> I run these under Windows XP, as well as under Kubuntu 8.10 using wine.
> Yes, the code is in the public domain for non-commercial use, and the
> usual "use at your own risk" caveat applies.
I also have crossover office, but neither that or wine could find the
sound cards, so Rocky didn't work.
With PowerSDR, it said it needed MS .NET either running mono-2.2 or CXO.
I also tried building PowerSDR from sources using monodevelop, but that
threw up errors uncomprehensible to anyone not .NET savvy. I will try
again with mono-2.4 and monodevelop-2.0. There is also a new CXO version
to try - they didn't go beyond asking where the PowerSDR sources could
be downloaded from.
73 ... Sid.
Sid Boyce ... Hamradio License G3VBV, Licensed Private Pilot
Emeritus IBM/Amdahl Mainframes and Sun/Fujitsu Servers Tech Support
Specialist, Cricket Coach
Microsoft Windows Free Zone - Linux used for all Computing Tasks