Date   

Re: Airspy HF+ available at Wimo #airspyhfplus

prog
 

On Tue, Nov 14, 2017 at 09:16 am, Tracey Gardner wrote:
 
So there is a fairly hefty mark up of over 25% if we use the main source for Airspy products in Europe.
 
It's called VAT.


Re: Airspy HF+ available at Wimo #airspyhfplus

G5VU
 

 
 
For the UK, the Wimo price of 232 Euros equates to roughly £209 plus shipping, without any shipping.
I missed out on the discount voucher but still only paid £161 inc shipping from Itead.
So there is a fairly hefty mark up of over 25% if we use the main source for Airspy products in Europe.
 
I'm not complaining, just commenting on the situation.
 
Regards
 
Tracey G5VU
 
 
 

----- Original Message -----
From: prog <info@...>
Reply-To: <main@airspy.groups.io>
To: <main@airspy.groups.io>
Sent: 14-Nov-17 2:37:36 PM
Subject: [airspy] Airspy HF+ available at Wimo #airspyhfplus

Hi all,

Wimo just announced the availability of the Airspy HF+ at their web store and started accepting pre-orders at a very convenient launch price. This is your main source for Airspy products in EU.

https://www.wimo.com/airspy-hfplus-sdr-receiver_e.html

Thanks!


Re: New SpyServer optimizations and features #spyserver

Martin - G8JNJ
 

Hi Jon,

You can't adjust the gain in direct sampling mode.

The only fix is to put an attenuator between the antenna and Dongle.

Regards,

Martin - G8JNJ


Re: Good CAT and/or Omnirig Plugin?

Ruben Navarro Huedo (EA5BZ)
 

I know Adam...also SDR-Radio, but i like SDR# and i want try to use it for that purpose.


Re: Good CAT and/or Omnirig Plugin?

adam9a4qv
 

HDSDR support that already.

Adam


Re: Tinker Board Direct Sampling server

Jeff Kelly
 

Thank you Dick!  Plenty to learn.

Appreciate you sending the note.

Jeff



On 11/14/2017 10:02 AM, Dick wrote:
Hi Jeff,
 
Myabe uou already knew this but when running TOP press the “1” character (on the normal not numeric keyboard) and you will see the usage per CPU. More informative.
 
My guess is that spyserver is using only one of the n CPU’s.
 
Cheers,
Dick
 
From: Jeff Kelly
Sent: Tuesday, November 14, 2017 15:53
To: main@airspy.groups.io
Subject: Re: [airspy] Tinker Board Direct Sampling server
 
Any chance you can interpret this TOP grab?
I am worried about the %93.1 or happy about the 74.4 id?

Jeff


On 11/14/2017 9:39 AM, prog wrote:
On Tue, Nov 14, 2017 at 06:36 am, Jeff Kelly wrote:
I put a Tinker Board Direct Sampling server up this morning.
Works pretty good here!

sdr://k2sdr.dyndns.org:5557/

Jeff
K2SDR
Works wonderfully.



Re: Tinker Board Direct Sampling server

Jeff Kelly
 

TY!

Jeff


On 11/14/2017 10:22 AM, prog wrote:
On Tue, Nov 14, 2017 at 07:17 am, Jeff Kelly wrote:

allow control 0 and HTOP:

Jeff

Every user session will take 12 ~ 13 % of one core. The FFT takes half a core, but only done once for all users, plus something for the OS and other processes.
This means you can probably stuff 20 users in that RPi (other memory bandwidth/bus limits will be reached before the CPU is fully utilized). This needs some testing.


Re: Tinker Board Direct Sampling server

prog
 

On Tue, Nov 14, 2017 at 07:17 am, Jeff Kelly wrote:

allow control 0 and HTOP:

Jeff

Every user session will take 12 ~ 13 % of one core. The FFT takes half a core, but only done once for all users, plus something for the OS and other processes.
This means you can probably stuff 20 users in that RPi (other memory bandwidth/bus limits will be reached before the CPU is fully utilized). This needs some testing.


Re: Tinker Board Direct Sampling server

Jeff Kelly
 

allow control 0 and HTOP:

Jeff

HTOP

On 11/14/2017 10:11 AM, prog wrote:
On Tue, Nov 14, 2017 at 07:04 am, Dick wrote:
Hi Jeff,
 
Myabe uou already knew this but when running TOP press the “1” character (on the normal not numeric keyboard) and you will see the usage per CPU. More informative.
 
My guess is that spyserver is using only one of the n CPU’s.
 
Cheers,
Dick
That's it. You still have a lot of room for many users. Note that the FFT is calculated for all users and "sliced" for every session.
This means the first user will use almost one core of your RPi, but all the subsequent users will only require a small slice of one core.

I recommend you install htop and post another screenshot.

PS: think of sticking the unit to a specific band and set allow_control = 0


Re: New SpyServer optimizations and features #spyserver

Jon Fear
 

Hi Aldo

What initial gain did you use on your v3? When I tried mine with the Wellbrook, the front end was swamped. If I can get this right, we may have another online tonight. t will be replaced when the HF+ arrives....

Thanks

Jon


Re: Tinker Board Direct Sampling server

prog
 

On Tue, Nov 14, 2017 at 07:04 am, Dick wrote:
Hi Jeff,
 
Myabe uou already knew this but when running TOP press the “1” character (on the normal not numeric keyboard) and you will see the usage per CPU. More informative.
 
My guess is that spyserver is using only one of the n CPU’s.
 
Cheers,
Dick
That's it. You still have a lot of room for many users. Note that the FFT is calculated for all users and "sliced" for every session.
This means the first user will use almost one core of your RPi, but all the subsequent users will only require a small slice of one core.

I recommend you install htop and post another screenshot.

PS: think of sticking the unit to a specific band and set allow_control = 0


Re: Tinker Board Direct Sampling server

Dick
 

Hi Jeff,
 
Myabe uou already knew this but when running TOP press the “1” character (on the normal not numeric keyboard) and you will see the usage per CPU. More informative.
 
My guess is that spyserver is using only one of the n CPU’s.
 
Cheers,
Dick
 

From: Jeff Kelly
Sent: Tuesday, November 14, 2017 15:53
To: main@airspy.groups.io
Subject: Re: [airspy] Tinker Board Direct Sampling server
 
Any chance you can interpret this TOP grab?
I am worried about the %93.1 or happy about the 74.4 id?

Jeff


On 11/14/2017 9:39 AM, prog wrote:
On Tue, Nov 14, 2017 at 06:36 am, Jeff Kelly wrote:
I put a Tinker Board Direct Sampling server up this morning.
Works pretty good here!

sdr://k2sdr.dyndns.org:5557/

Jeff
K2SDR
Works wonderfully.


Re: New SpyServer optimizations and features #spyserver

Aldo
 

Hi Roberto,
I don't have frontend filter today.
Actual setup:
Ala1530> RTL-SDR V3> Raspberry pi3 (with linear power supply)> ethernet Lan > 20/100 VDSL.
Add 15dB attenuator overnight.

Aldo


Il 14/nov/2017 14:42, "Roberto Zinelli" <roberto.zinelli@...> ha scritto:
Aldo, your server work very well... surprise for me clear signal on 7 Mhz with RTL-SDR dongle .. you have a frontend filter added or direct connection with Ala1530?  Witch band in  your internet connection? 

73 IW4ENS Roberto


Re: Tinker Board Direct Sampling server

Jeff Kelly
 

Any chance you can interpret this TOP grab?
I am worried about the %93.1 or happy about the 74.4 id?

Jeff

TOP TInker

On 11/14/2017 9:39 AM, prog wrote:
On Tue, Nov 14, 2017 at 06:36 am, Jeff Kelly wrote:
I put a Tinker Board Direct Sampling server up this morning.
Works pretty good here!

sdr://k2sdr.dyndns.org:5557/

Jeff
K2SDR
Works wonderfully.


Re: Tinker Board Direct Sampling server

prog
 

On Tue, Nov 14, 2017 at 06:36 am, Jeff Kelly wrote:
I put a Tinker Board Direct Sampling server up this morning.
Works pretty good here!

sdr://k2sdr.dyndns.org:5557/

Jeff
K2SDR
Works wonderfully.


Airspy HF+ available at Wimo #airspyhfplus

prog
 

Hi all,

Wimo just announced the availability of the Airspy HF+ at their web store and started accepting pre-orders at a very convenient launch price. This is your main source for Airspy products in EU.

https://www.wimo.com/airspy-hfplus-sdr-receiver_e.html

Thanks!


Tinker Board Direct Sampling server

Jeff Kelly
 

I put a Tinker Board Direct Sampling server up this morning.
Works pretty good here!

sdr://k2sdr.dyndns.org:5557/

Jeff
K2SDR


Re: New SpyServer optimizations and features #spyserver

prog
 

On Tue, Nov 14, 2017 at 06:26 am, <john@...> wrote:
Full update / upgrade cycle on both systems. Same issue. Interestingly, same setup but with a spyvert 2 works perfectly... Odd.
Will stick a clean raspbian install on a card later and try it.
Yep. A clean install always helps. You only need to change these settings:

device_type = RTL-SDR
initial_frequency = 7100000
rtl_sampling_mode = 2


Re: New SpyServer optimizations and features #spyserver

john@...
 

Full update / upgrade cycle on both systems. Same issue. Interestingly, same setup but with a spyvert 2 works perfectly... Odd.
Will stick a clean raspbian install on a card later and try it.


Re: New SpyServer optimizations and features #spyserver

Peter Cumminsky <peterconrad@...>
 

<<<
From: Aldo <mailto:iw2dzx@gmail.com?subject=Re:%20New%20SpyServer%20optimizations%20and%20features>

Date: Tue, 14 Nov 2017 01:57:51 PST

Rtl-sdr direct sampling work fine!
Available UNTIL tonight, my raspberry/rtl-sdr v3 /Ala1530.
0-8MHz
sdr://151.20.181.90:5555 <http://151.20.181.90:5555>

Aldo

Working well here Aldo. Haven't tried my local dongles - no suitable antenna at present and am in a VERY noisy location (Apartment complex).

--

- Peter Conrad Cumminsky: <peterconrad@yahoo.com>
- My Homepage: [http://peterconrad.tripod.com]
- "The Gods do not subtract, from man's alloted time,
- the hours spent in sailing." - anonymous

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