[hpsdr] Fwd: Re: pihpsdr

[Bob Cowdery]

Only 48K works, higher rates are not intelligible. I can run 384k
normally so you are probably correct that RDP is putting extra load on
the pi. I do have the standard 7" screen and enclosure which I plan to
set up so I will let you know how I get on with that.

Bob


On 2/5/2017 1:15 PM, John Melton wrote:
> ***** High Performance Software Defined Radio Discussion List *****
>
> Hi Bob,
>
> Do you get the blip regardless of sample rate?
>
> I suspect that the problem is caused by running RDP but not 100% sure
> as I cannot test because I do not run any Microsoft software here.
>
> -- John
>
>
> On 05/02/17 12:40, Laurence Barker wrote:
>> ***** High Performance Software Defined Radio Discussion List *****
>>
>> I wasn't getting that on my USB based Ozy. I did find that the
>> behaviour was
>> sample rate and noise blanker setting dependent - if you selected too
>> high a
>> sample rate it would stop functioning. With my RPI3 I was able to get
>> 192K
>> samples per second, but with no NB selected; you needed a lower
>> sample rate
>> with NB.
>>
>> Is the behaviour you get affected by sample rate, NB, AGC etc selection?
>>
>>
>>
>> Laurence Barker G8NJJ
>>
>> laurence at nicklebyhouse.co.uk
>>
>> -----Original Message-----
>> From: Hpsdr [mailto:hpsdr-bounces at lists.openhpsdr.org] On Behalf Of Bob
>> Cowdery
>> Sent: 05 February 2017 10:46
>> To: hpsdr at lists.openhpsdr.org list <hpsdr at lists.openhpsdr.org>
>> Subject: [hpsdr] pihpsdr
>>
>> ***** High Performance Software Defined Radio Discussion List *****
>>
>> Hi all,
>>
>> Thanks John for a very nice piece of software. Just put it on one of
>> my pi
>> 3's running over RDP (latest production version). Listening to 40m as I
>> write this.  I have a basic Metis system so obviously running the 'old'
>> protocol. I do notice there is a rhythmic blip every 2-3 seconds
>> which shows
>> as evenly spaced horizontal bars on the waterfall and a rise in the
>> noise
>> floor on the spectrum. I don't get this with other software. Sounds
>> like a
>> buffer alignment problem or if this is just me then anyone any idea what
>> might cause it.
>>
>> 73's Bob G3UKB
>>
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