[hpsdr] TeamSpeak audio 2018/May/26

Sat May 26 09:14:52 PDT 2018

The AD9361, with its frequency range and bandwidth, is appealing, but there's potentially a serious problem: it is a "zero if" system.  Opposite sideband suppression depends on IQ phase and amplitude balance.  The chip has automatic balance capabilities, but they might not work as well as you might hope.  The AD 9371 touts  "better performance", but how much better?  Both are extremely complex, with hundreds of registers of control bits.
Dave  WA8YWQ

AA8K73 GMail <aa8k73 at gmail.com> wrote:

>***** High Performance Software Defined Radio Discussion List *****
>
>
>The 26/May TeamSpeak mp3 (50 minutes) 64 kbps is available at:
>
>< http://www.hamsdr.com/dnld.aspx?id=13707 >
>
>  or
>
>< http://www.hamsdr.com/dnld.aspx >
>
>
>
>20:30:32> *** You are now talking in channel: "Default Channel"
>20:30:37> *** You are now talking in channel: "OpenHPSDR"
>
>21:02:55> "AJ6BC - John": No audio?
>
>21:05:10> "AJ6BC - John": HPSDR Demo at Maker Faire '19 -
>
>AD9361 - 70MHz-6GHz
>Lots of platforms
>Need to avoid 'full-freight' charge for the Vivado/Mathworks
>licenses if possible.  Did talk to Ettus Research today and have 
>a question in with Analog Devices.
>
>Themis - Status:
>GPS 'telemetry' over USB and BlueTooth/WiFi
>Testing with two freq counters - Mini Circuits and BK Precision;
>using GPSDO 10MHz reference
>Looking good; working on the EFC (electronic frequency control) 
>fine tuning.
>10MHz 'synthezised' output is available - working on that.
>3 New OCXO's recently received from ISO-TEMP - these are 3.3V units
>os comments:
>Running v10 of FreeRTOS now known as Amazon RTOS and
>there are currently nine real-time tasks in the project
>and all critical memory allocation is controlled by the RTOS.
>
>The age of AI SDR is upon us:
>Has anyone seen the DeepWave Digital -
>
>21:05:24> "AJ6BC - John":
>< https://www.crowdsupply.com/deepwave-digital/air-t >
>and
>< https://www.deepwavedigital.com/ >
>
>An interesting note - all of these need a disciplined 10MHz 
>reference input.
>
>21:06:24> "AJ6BC - John": No sure what's going on with audio as 
>it tested OK earlier...
>
>21:08:12> "Bill - KD5TFD": not seeing a blue light for you john 
>... some chance you can computer disagree on PTT key
>
>21:08:29> "Bill - KD5TFD": woo hoo
>
>21:13:13> "Bill - KD5TFD": it is
>
>21:13:40> "Bill - KD5TFD": tx2
>
>21:18:51> "AJ6BC - John": Bill - just reinstalled TS - don't 
>know what's going on - I'm driving it manually now under config...
>
>21:19:11> "AJ6BC - John": Maybe something wrong with version 3.1.9?
>
>21:20:39> "AJ6BC - John":
>< https://www.ettus.com/product/details/USRP-B200mini-Board >
>
>21:25:09> "Bill - KD5TFD": how much code do you want to write ...
>
>21:25:22> "AJ6BC - John": Writing plenty...
>
>21:32:19> "Phil-VK6PH":
>< https://wiki.myriadrf.org/LimeSDR-Mini >
>
>21:33:42> "AJ6BC - John": Intel Max 10 - same as Altera???
>
>21:33:48> "Bill - KD5TFD": ya
>
>21:33:52> "AJ6BC - John": Good
>
>21:34:24> "Bill - KD5TFD": wow ... I did not realize how cheap 
>the lime mini is
>
>21:37:26> "Bill - KD5TFD":
>< 
>https://www.altera.com/solutions/industry/wireless/applications/5g.html
>
> >
>
>21:47:27> "AJ6BC - John": Phil - did you ever do any video 
>projects with RPi?
>
>21:47:37> "AJ6BC - John": Did Broadcom give you register 
>settings if so?
>
>21:48:24> "Bill - KD5TFD": FYI .. this was the talk I saw during 
>the week where void * came up:
>< https://www.snafucatchers.com/
>single-post/2017/11/14/void-Incidents-as-Untyped-Pointers >
>
>21:49:23> "Bill - KD5TFD": you have a machine vision type setup 
>checking the pics of dut display?
>
>21:50:09> "AJ6BC - John": Why I religiously run Lint
>
>21:51:40> "Bill - KD5TFD": aw what?
>
>21:52:34> "AJ6BC - John": Amazon AWS
>
>21:52:52> "AJ6BC - John": Let me find a link - I use Code Commit 
>all the time.
>
>21:53:06> "Bill - KD5TFD": Ya .. I was joking ... I work for one 
>of their competitors
>
>21:53:15> "AJ6BC - John": oh
>
>21:53:28> "AJ6BC - John": < 
>https://aws.amazon.com/iot/?sc_channel=PS&sc_campaign=acquisition_US&sc_publisher=google&sc_medium=iot_b&sc_content=iot_p&sc_detail=aws%20iot&sc_category=iot&sc_segment=153194435032&sc_matchtype=p&sc_country=US&s_kwcid=AL!4422!3!153194435032!p!!g!!aws%20iot&ef_id=Wwi@BQAABQ0AaCA5:20180526015309:s
>
> >
>
>21:54:09> "Bill - KD5TFD": neat -- have not looked much at their 
>IoT stuff
>
>21:55:03> "AJ6BC - John": New stuff all the time - I used to use 
>both GOOG and AWS - but use only mostly AWS now even though I 
>spin up a few VM's on GOOG every now and then
>
>21:55:31> "Mike - AA8K": I really like Linux!
>
>21:55:45> "Bill - KD5TFD": ya ... Linux has taken over the world
>
>21:57:32> "AJ6BC - John": Guys - signing off - XYL giving me the 
>eye - 73's!  Thanks for the great discussion!
>
>21:57:39> "Bill - KD5TFD": 73
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