[hpsdr] More Strange Behavior PowerSDR 1.19.3.2 , K7SR

[Erik Anderson]

Not sure I really have any valid input here, but the last time someone
complained about an even frequency offset it ended up being something having
to do with changing modes in and out of CW and causing a CW offset to be
applied to the frequency somewhere...

On Sun, Jan 23, 2011 at 7:37 AM, Mike F <mikecf100 at gmail.com> wrote:

> ***** High Performance Software Defined Radio Discussion List *****
>
> Hi Phil
>
> Thanks for coming back.
>
> The 100 hz transmit frequency error may have been caused by not having the
> source selected.  There is some difficulty in checking this out without
> being on the air.
>
> However, after checking penelope as the 10Mhz source, I verified that the
> other noted problem still exists.  In fact, I noticed that the phenomena can
> be observed while turning off the TUN mode, the tone on the display shifts
> from the intended tune frequency to the receive measured frequency as it
> dies away.  That is:  if the system is set at 14.18000Mhz with the tune
> offset set to 600hz, then while tuning the display shows 14.180600 for the
> tone.  When TUN is turned off and PowerSDR goes back to receive mode, the
> display of the dying tone shifts to 14.18000, the frequency actually heard
> on the second receiver.
>
> I will have to set up a test to determine if the 100hz xmit shift has gone
> away.
>
> In answer to another question I received, in both versions of PowerSDR used
> in the testing, the mode was set to USB (upper sideband) SSB.
>
> 73
>
> Mike, K7SR
>
>
> On 1/23/2011 4:41 AM, Phil Harman wrote:
>
>> Hi Mike,
>>
>> Welcome to the openHPSDR group.
>>
>> Regarding the frequency error, did you have the 10MHz source selected
>> correctly? This is done in PowerSDR under Setup > HPSDR. If you had this
>> set to Atlas, and did not have a 10MHz reference connected to the Atlas
>> bus, then the clocks on Mercury and Penelope would not be phase-locked
>> together. This could cause the frequency error your found.
>>
>> 73 Phil... VK6APH
>>
>> ----- Original Message ----- From: "Mike F" <mikecf100 at gmail.com>
>> To: <hpsdr at lists.openhpsdr.org>
>> Sent: Saturday, January 22, 2011 11:39 PM
>> Subject: [hpsdr] More Strange Behavior PowerSDR 1.19.3.2 , K7SR
>>
>>
>>  ***** High Performance Software Defined Radio Discussion List *****
>>>
>>> Being new to HPSDR I am experimenting with the various features. I
>>> have installed two versions of Powersdr on my computer, both from the
>>> HPSDR svn. These are: "PowerSDR (KD5TED 5jan2011 derived from
>>> 1.10.4+BaseSVN 2025)" and "PowerSDR 1.19.3.2".
>>>
>>> The following problems were observed with 1.19.3.2, and ARE NOT
>>> present in the KD5TED version.
>>>
>>> I was checking the rig while talking to a fellow local ham. He noted
>>> that when we both were on 14.18000 he had to tune about 100hz high for
>>> me to not sound donald duck. When he changed frequency he was too low
>>> pitched on my end. We played for a while and I found that if I set XIT
>>> to -100 we could operate and both sound good. I then loaded the KD5TED
>>> version and found that it worked correctly without the offset.
>>>
>>> This morning, while conducting further testing, I turned on another
>>> receiver, tuned to the same frequency as HPSDR. Using 1.19.3.2 when I
>>> activated tune I heard a low level hum, although my power meter showed
>>> output. The panadapter display showed a tone about 600hz above the set
>>> frequency. When I did the same for KD5TED version, the display was the
>>> same but I heard a clear tone at about the right frequency. I switched
>>> back to 1.19.3.2 and decided to tune the second receiver off the test
>>> frequency. Surprise! The tone was exactly at the set frequency, not
>>> the 600hz offset shown on the display.
>>>
>>> Am I missing something. Not being that familiar with the software, I
>>> am not sure?
>>>
>>> Mike, K7SR
>>> _______________________________________________
>>> HPSDR Discussion List
>>> To post msg: hpsdr at openhpsdr.org
>>> Subscription help:
>>> http://lists.openhpsdr.org/listinfo.cgi/hpsdr-openhpsdr.org
>>> HPSDR web page: http://openhpsdr.org
>>> Archives: http://lists.openhpsdr.org/pipermail/hpsdr-openhpsdr.org/
>>>
>>>
>>>
>>> -----
>>> No virus found in this message.
>>> Checked by AVG - www.avg.com
>>> Version: 10.0.1191 / Virus Database: 1435/3394 - Release Date: 01/21/11
>>>
>>>
>>  _______________________________________________
> HPSDR Discussion List
> To post msg: hpsdr at openhpsdr.org
> Subscription help:
> http://lists.openhpsdr.org/listinfo.cgi/hpsdr-openhpsdr.org
> HPSDR web page: http://openhpsdr.org
> Archives: http://lists.openhpsdr.org/pipermail/hpsdr-openhpsdr.org/
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.openhpsdr.org/pipermail/hpsdr-openhpsdr.org/attachments/20110123/ce5c9c16/attachment-0004.htm>