[hpsdr] Fwd: Re: pihpsdr

[John Melton]

Hi Bob,

I have found some 2 amp supplies are not what they say they are!

-- john


On 05/02/17 17:48, Bob Cowdery wrote:
> ***** High Performance Software Defined Radio Discussion List *****
>
> Hi Jan. Its a 2A supply so should be fine. I've tried knocking WiFi 
> and Bluetooth on the head but no luck so far.
>
>
> On 2/5/2017 5:42 PM, dl2hbj at gmail.com wrote:
>> Hi Bob,
>>
>> I had a similar problem which was gone with a more powerfully power 
>> supply.
>>
>> Jan, DL2HBJ
>>
>>> Am 05.02.2017 um 09:31 schrieb Bob Cowdery <bob at bobcowdery.plus.com>:
>>>
>>> ***** High Performance Software Defined Radio Discussion List *****
>>>
>>> I've got it running on the 7" touch screen now, looks fantastic but 
>>> unfortunately didn't fix the blip even after I stopped the xrdp 
>>> service.
>>>
>>> pihpsdr shows about 35%, Xorg 20% and the rest very little. Free mem 
>>> about 520K.
>>>
>>> 73 Bob G3UKB
>>>
>>>> On 2/5/2017 1:24 PM, Bob Cowdery wrote:
>>>> ***** High Performance Software Defined Radio Discussion List *****
>>>>
>>>> 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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