[hpsdr] My Penelope results

[Thompson_Peter at emc.com]

Dave,

I have a similar configuration.  If I remember correctly, I have my
boards in the order (l - r)
Janus - Ozzy - Penelope.  I'm pretty sure I have an empty slot between
each.  I haven't done too much experimentation with Penny yet but on
last try it was working - at least I could hear my SSB sigs on another
RX.

Pete, N3EVL

> -----Original Message-----
> From: hpsdr-bounces at lists.hpsdr.org [mailto:hpsdr-
> bounces at lists.hpsdr.org] On Behalf Of ww2r at g4fre.com
> Sent: Tuesday, September 30, 2008 11:35 AM
> To: hpsdr at hpsdr.org
> Subject: [hpsdr] My Penelope results
> 
> ***** High Performance Software Defined Radio Discussion List *****
> 
> Having returned from road trips i have now had time to try out the
> penelope/janus/ozy trio in conjunction with the sdr1000 for rx
> 
> I have installed:-
> 
>
svn://206.216.146.154/svn/repos_sdr_windows/PowerSDR/branches/kd5tfd/Pe
> nnyMe
> rge
> 
> which I believe is the latest powersdr that supports penny
> 
> I put the boards in the following order (progressing away from the atx
> connector) ozzy, janus, penelope (in adjacent slots)
> 
> Running power sdr i get a short burst of noise from the amplified
> speaker
> combined with signals from the band for ~5 seconds then no audio. The
> spectrum display works fine. Stopping/starting power sdr doesnt get
the
> audio back. If I power off/on the sdr stack and restart powersdr i get
> the
> same 5s of noise then silence
> 
> After removing Penelope and changing the setup to match, the receiver
> pART
> worked properly again
> 
> After trying a lot of things, unsuccesfully,  including running the
> ozy.bat
> before launching powersdr, in desperation i tried swapping the board
> order
> to:-
> 
> ozzy, penelope, janus in adjacent slots
> 
> and everything worked fine! I searched the archives and didnt find any
> mention of sequence criticality, but is my original order a known
> issue?
> 
> At this point i was able to test the transmitter. I set txgain to 38.0
> and
> tune power to 100% on all bands and found 0.33W on 80m, 0.25W on 10m
> and
> 0.1W on 6m. Measurements were made using an HP436 power meter attached
> directly to Penelope. Powers were also confirmed with an HP8563E
> analyser. I
> have seen 0.5 to 1W reported by others under these conditions on lf,
> where
> is my missing 4dB, or is it not really missing?
> 
> On penelope i see 4 LEDs lit under the above conditions. Occasionally
> the
> 5th lights on a good SSB whistle!
> 
> I read the  posts about USB activity lowering power output, the HPSDR
> is the
> USB device on the computer (2.2G processor, 4G memory)
> 
> I have alos seen mention of penelope having ALC. It would appear my
> output
> stage isnt compressing, when i change TXgain from 36 to 37 to 38db I
> still
> see an increase in power
> 
> Feedback appreciated
> 
> Dave
> 
> WW2R
> 
> 
> 
> 
> 
> 
> 
> to drive the
> 
> 
> _______________________________________________
> HPSDR Discussion List
> To post msg: hpsdr at hpsdr.org
> Subscription help: http://lists.hpsdr.org/listinfo.cgi/hpsdr-hpsdr.org
> HPSDR web page: http://hpsdr.org
> Archives: http://lists.hpsdr.org/pipermail/hpsdr-hpsdr.org/


 1222790277.0