Date   

Airspy Mini calibrate #hardware

Dave C aka Dave3825us
 

Can anyone who calibrated their airspy please post directions? Unitrunker has been sounding like crap lately and I ran sdr# on some of the 800MHz freqs and it seems to be off. At 162.475, it seems dead on. On 477.8875 it seems dead on. When getting into the 700's, its not dead on.

Any help or advise would be greatly appreciated.

Thanks


Re: New server West of Scotland - Is it working?

John
 

Hi John

are your server up and running? as I tried again but no signal on my remote airspy software 

73

Claudio.

           Sorry to say server won't be running again until this coming weekend.
I hope by that time to have sorted the irritating RFI from the server computer which makes slight but regularly spaced lines on the waterfall. 
And replace the horizontal portion of the main antenna - 100m - with something more durable for the winter.
Planning to experiment with kevlar cored ultralight DX antenna wire which resists stretch and has an OD of only 1.5mm.
Wellbrook Loop as back-up.
We had a power cut last week in my absence and everything failed to reboot (because I forgot to tell it to) so that needs sorting for the next outage.
I will post when service resumes. Airspy R2 with Spyverter for the moment...

John


Re: HF+ In real Life

Roberto Zinelli
 

Hello Simon,
Do you have a VLF antenna?   should be nice to connect the antenna  for one day to AIRSPYHF+  spyserver for test.
I would  verify the possibility to receive  the alfa stations, my be at  14,88 Khz.... a true test for S.A.Q. event at Christmas eve.
73 IW4ENS Roberto


Re: New SpyServer optimizations and features #spyserver

Jeff Kelly
 

KiwiSDR is solid in NJ.

Did you adjust the Buffer size 50 and Buffer count 30 on spyserver?

Jeff



On 11/14/2017 4:24 PM, Martin via Groups.Io wrote:
Jeff,

Can you also try my KiWi web sdr which is running over the same network.

http://southwest.ddns.net:8073

See if the web sdr also has problems if you run that and the spyserver connection concurrently.

Regards,

Martin - G8JNJ


Re: Airspy HF+ available at Wimo #airspyhfplus

Eric Oyen <eric.oyen@...>
 

another airplane! fan heard from! :)

DE n7zzt Eric

On Nov 14, 2017, at 1:47 PM, Fred Hillhouse wrote:

Absolutely and please don’t call me Shirley.
 
 
From: main@airspy.groups.io [mailto:main@airspy.groups.io] On Behalf Of Simon Brown
Sent: Tuesday, November 14, 2017 3:46 PM
To: main@airspy.groups.io
Subject: Re: [airspy] Airspy HF+ available at Wimo #airspyhfplus
 
Shirley there should be 0% duty on the HF+?
 
Simon Brown, G4ELI
 
 
 
From: main@airspy.groups.io [mailto:main@airspy.groups.io] On Behalf Of responses@...
Sent: 14 November 2017 17:32
To: main@airspy.groups.io
Subject: Re: [airspy] Airspy HF+ available at Wimo #airspyhfplus
 
Yes but when customs get the incoming parcel they will add 5% duty to the HF+ price
and then 20% VAT to the total including the duty and shipping cost .....
So the actual price will be closer to $199 + 5% is $209 then $209 + $24 shipping (DHL to UK) + 20% is $280
which amounts to around 238 euro putting Wimo about the right mark for FULL price i.e. no discount coupons (however without shipping cost)
The biggest uplift comes from Moonraker as $280 (which includes shipping) equates to £213 but Moonraker's
standard price is £230 (without shipping).
It follows that buying direct from itead.cc looks at present the best deal for the UK.


Virus-free. www.avast.com


Re: New SpyServer optimizations and features #spyserver

Martin - G8JNJ
 

Jeff,

Can you also try my KiWi web sdr which is running over the same network.

http://southwest.ddns.net:8073

See if the web sdr also has problems if you run that and the spyserver connection concurrently.

Regards,

Martin - G8JNJ


Re: Good CAT and/or Omnirig Plugin?

Ruben Navarro Huedo (EA5BZ)
 

I tested it some time ago, but it is bery "basic".
Omnirig support could be wonderful !


Re: New SpyServer optimizations and features #spyserver

Martin - G8JNJ
 

OK, thanks for the report.

It could be that my other Web SDR's are using up my limited uplink bandwidth.

I'll take another look at it tomorrow.

Regards,

Martin - G8JNJ


Re: Airspy HF+ available at Wimo #airspyhfplus

Fred Hillhouse
 

Absolutely and please don’t call me Shirley.

 

 

From: main@airspy.groups.io [mailto:main@airspy.groups.io] On Behalf Of Simon Brown
Sent: Tuesday, November 14, 2017 3:46 PM
To: main@airspy.groups.io
Subject: Re: [airspy] Airspy HF+ available at Wimo #airspyhfplus

 

Shirley there should be 0% duty on the HF+?

 

Simon Brown, G4ELI

 

www.dxgalaxy.com
www.sdr-radio.com
www.sdr-satellites.com

 

 

From: main@airspy.groups.io [mailto:main@airspy.groups.io] On Behalf Of responses@...
Sent: 14 November 2017 17:32
To: main@airspy.groups.io
Subject: Re: [airspy] Airspy HF+ available at Wimo #airspyhfplus

 

Yes but when customs get the incoming parcel they will add 5% duty to the HF+ price
and then 20% VAT to the total including the duty and shipping cost .....
So the actual price will be closer to $199 + 5% is $209 then $209 + $24 shipping (DHL to UK) + 20% is $280
which amounts to around 238 euro putting Wimo about the right mark for FULL price i.e. no discount coupons (however without shipping cost)
The biggest uplift comes from Moonraker as $280 (which includes shipping) equates to £213 but Moonraker's
standard price is £230 (without shipping).
It follows that buying direct from itead.cc looks at present the best deal for the UK.


Virus-free. www.avast.com


Re: Airspy HF+ available at Wimo #airspyhfplus

Simon Brown
 

Shirley there should be 0% duty on the HF+?

 

Simon Brown, G4ELI

 

www.dxgalaxy.com
www.sdr-radio.com
www.sdr-satellites.com

 

 

From: main@airspy.groups.io [mailto:main@airspy.groups.io] On Behalf Of responses@...
Sent: 14 November 2017 17:32
To: main@airspy.groups.io
Subject: Re: [airspy] Airspy HF+ available at Wimo #airspyhfplus

 

Yes but when customs get the incoming parcel they will add 5% duty to the HF+ price
and then 20% VAT to the total including the duty and shipping cost .....
So the actual price will be closer to $199 + 5% is $209 then $209 + $24 shipping (DHL to UK) + 20% is $280
which amounts to around 238 euro putting Wimo about the right mark for FULL price i.e. no discount coupons (however without shipping cost)
The biggest uplift comes from Moonraker as $280 (which includes shipping) equates to £213 but Moonraker's
standard price is £230 (without shipping).
It follows that buying direct from itead.cc looks at present the best deal for the UK.


Re: Tinker Board Direct Sampling server

Jeff Kelly
 

Since I am running a  rtl-sdr dongle with only 2M width on my Tinker Board,

I decided to automate changing the bands that I listen to throughout the day.

Basically , by restarting spyserver with a different config file after a pre-determined delay.

So the first effort is a simple script that will loop. 

Next, I will move this to a cron to be more accurate.

Jeff (linux hack!)

#!/bin/bash
cd /home/linaro/spyserver
lxterminal -e "/home/linaro/spyserver/spyserver" "spyserver_20M.config"
sleep 180m
pkill spyserver
lxterminal -e "/home/linaro/spyserver/spyserver" "spyserver_40M.config"
sleep 240m
pkill spyserver
lxterminal -e "/home/linaro/spyserver/spyserver" "spyserver_75M.config"
sleep 240m
pkill spyserver
lxterminal -e "/home/linaro/spyserver/spyserver" "spyserver_BC.config"
sleep 300m
pkill spyserver
lxterminal -e "/home/linaro/spyserver/spyserver" "spyserver_40M.config"
sleep 480m
pkill spyserver
cd /home/linaro/
sh ./job.sh


On 11/14/2017 10:24 AM, Jeff Kelly wrote:

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: New SpyServer optimizations and features #spyserver

Jeff Kelly
 

Martin,


Lots of stutter in New Jersey.


Jeff


On 11/14/2017 2:50 PM, Martin via Groups.Io wrote:
Hi Jon,

Try my V3 running in direct sampling mode with no filters.

sdr://g8jnj.zapto.org:5557

Regards,

Martin - G8JNJ


Re: New SpyServer optimizations and features #spyserver

Martin - G8JNJ
 

Hi Jon,

Try my V3 running in direct sampling mode with no filters.

sdr://g8jnj.zapto.org:5557

Regards,

Martin - G8JNJ


Re: New SpyServer optimizations and features #spyserver

Martin - G8JNJ
 
Edited

Hi Jon,

The Wellbrook tends to have a high output on the lower frequencies.

You could try adding something like a 100pF capacitor in series with the RF feed to the RTL-SDR as a very crude amplitude equaliser.

This will roll off the gain at 2MHz by about 20dB and 1dB at 30MHz but will still be OK for MF reception as the natural noise floor tends to dominate on the lower frequencies. If the attenuation is to much try a slightly larger value of capacitor until you find a happy compromise.

Here's a link to an online attenuator calculator.

https://www.everythingrf.com/rf-calculators/attenuator-calculator

Regards,

Martin - G8JNJ


Re: Good CAT and/or Omnirig Plugin?

 

There is a CAT plugin for Sdr#, its called sdrsharp-catcontroller
Its been a while, the but when I did try it previously, it worked very well. Presents sdrsharp as a TS50
Find it on Google and/or gitHub

73 de kc1ccr
bammi


Re: Airspy HF+ available at Wimo #airspyhfplus

G5VU
 

My experience with previous Airspy purchases from Itead has taught me that it's very well worth taking the gamble regarding any import duty and VAT etc
At the moment I'm winning 2-0

73s Tracey G5VU

----- Original Message -----
From: Alan G4ZFQ <alan4alan@gmail.com>
Reply-To: <main@airspy.groups.io>
To: <main@airspy.groups.io>
Sent: 14-Nov-17 5:22:25 PM
Subject: Re: [airspy] Airspy HF+ available at Wimo #airspyhfplus
________________________________________________________________________________

For the UK, the Wimo price of 232 Euros equates to roughly £209 plus
shipping, without any shipping.
Tracey,

Which includes tax. Around £33 VAT.

I missed out on the discount voucher but still only paid £161 inc
shipping from Itead.
Which does not, best of luck!

73 Alan G4ZFQ

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.


Re: New SpyServer optimizations and features #spyserver

Jon Fear
 

Wow! Still won't be long and then the Wellbrook will be put to good use....

1623 installed and running, just a few tests now.

Thanks for everything Youssef.


Re: New SpyServer optimizations and features #spyserver

prog
 

On Tue, Nov 14, 2017 at 09:55 am, Jon Fear wrote:
..And there was I thinking all was good on 1622! Downloading 1623 now...

As for an attenuator, oops, not got one....Time for some more home brew building. Anyone got any good designs that I can knock up? 

Still the HF+ will be here soon...

VHF from Weston super Mare will be online later (87.50MHz through 150MHz).

BW

Jon
Here's the funny part: https://twitter.com/lambdaprog/status/930489661063036931


Re: New server West of Scotland - Is it working?

claudio36itus
 

Hi John

are your server up and running? as I tried again but no signal on my remote airspy software 

73

Claudio 


Re: New SpyServer optimizations and features #spyserver

Jon Fear
 

...And there was I thinking all was good on 1622! Downloading 1623 now...

As for an attenuator, oops, not got one....Time for some more home brew building. Anyone got any good designs that I can knock up? 

Still the HF+ will be here soon...

VHF from Weston super Mare will be online later (87.50MHz through 150MHz).

BW

Jon

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