Date   

Re: New VARA HF v3.0.2 #VARA

Andrew O'Brien
 

I finally got around to installing VARA Chat today.  I recall Jose's previous message stating VARA CHAT is good for emcomm use and not for  CQ Hello Bye QSOs.  However I had a QSO with someone via Olivia the other day saying he uses VARA Chat on HF quite a bit.  What frequencies are people using it on ?
Andy K3UK 


Re: New VARA HF released 4-3-0 #VARA

Graham
 

HNY Andy

Yes , just the  same as  the  other  vara  HF modes ,  the  individual  carrier rates  are  42  baud , 
300 never really  made much sense, other than  b/w linked to  speed / rate , far to high to  be robust
on HF ..but yes, crazy amounts of data  in a speech channel  , nearly as  quick as the  old  9600  on UHF 

Seems  to  be being  driven by the  emergency  &  ham<>mil  users  ..?

73 -Graham
G0NBD


Re: New VARA HF released 4-3-0 #VARA

Graham
 

HNY  Sigi

Well ,  AO-100  has wide and narrow  band  areas, there  are  already  VARA SAT , which has  extended AFC and some 
link delay measuring  modules as well  , will  also  work with  any  steam powered  ssb set ups that  need  very long tx/rx times  , that is   more  suited to  the  sat link, as was designed  specially  for the  sat , but ,  no reason why the  high speed  varafm-96  could not be  used in the  wide band  section ? I would think the  power density of a wide band  FM signal  is similar to the  TV  broadcasts  ? and    zero  netting problems  ,  being  fm ?

73 -Graham
g0nbd

Ive never seen the  AO-100   transponders full ,  there  is a  ROS-HF mode  qso  running, with  prog set to  2 meters  
no different to the  on-air modem, just the  highest  qrg  coded  these days  .. and with  ROS -HF more than one  qso  can be  running at the same time  in the  same channel 


Re: New VARA HF released 4-3-0 #VARA

Andrew O'Brien
 

does this keep us in the USA "legal" in terms of FCC imposed baud rates.  I can't remember those pesky rules
ANdy K3UK

On Sat, Jan 2, 2021 at 12:16 PM Siegfried Jackstien <siegfried.jackstien@...> wrote:

hmm .. its a tad bit wide to be used on qo100 ;-) ... ok ok its vara HF ... not vara shf hi hi

100 to 2900 ... sure can you set that in your sdr setup (example a pluto) ... but we should not use more as 2.7 there ... hmmm

on the other hand there are stations splattering as wide as a barn door so as long as we keep it linear and not splattering then i guess nobody would moan about using 2.9kc ...

wow ... not bad ... 8.5k in a 2.9 kc wide channel ...

greetz sigi dg9bfc

Am 02.01.2021 um 14:54 schrieb Graham:
New VARA HF released  4-3-0

New for  2021 ,  additional  2750 Hz bandwidth  mode added  to the  VARA  family 
utilising available  bandwidth,  maximum rate is  increased to 8489  Bps in 2750 Hz 
centered on 1500 Hz mid point  tone.

The  Modem architecture , being optimised to maximise the  available bandwidth
with  new  carrier number's / bps rate  combinations, all the  facilities of the  VARA
system are maintained , monitor , chat module, bps , and  winlink connectivity.

Note the  level numbers are, then, not directly related 



Compatibility with  existing  installations is  maintained  , by automatic
mode detection , as  per  existing 2300 <>500  mode  switching .





Rig compatibility ,  ic7300  may be  directly  set  to the  required b/w, where  as the  ic7100   , requires the  use of the  SSB voice  
non  standard  bandwidth  settings  of 100 Hz <> 2900 Hz , further  details are  contained in the  pdf documentation 

73 -Graham
g0nbd





--
Andy


Re: New VARA HF released 4-3-0 #VARA

Siegfried Jackstien
 

hmm .. its a tad bit wide to be used on qo100 ;-) ... ok ok its vara HF ... not vara shf hi hi

100 to 2900 ... sure can you set that in your sdr setup (example a pluto) ... but we should not use more as 2.7 there ... hmmm

on the other hand there are stations splattering as wide as a barn door so as long as we keep it linear and not splattering then i guess nobody would moan about using 2.9kc ...

wow ... not bad ... 8.5k in a 2.9 kc wide channel ...

greetz sigi dg9bfc

Am 02.01.2021 um 14:54 schrieb Graham:

New VARA HF released  4-3-0

New for  2021 ,  additional  2750 Hz bandwidth  mode added  to the  VARA  family 
utilising available  bandwidth,  maximum rate is  increased to 8489  Bps in 2750 Hz 
centered on 1500 Hz mid point  tone.

The  Modem architecture , being optimised to maximise the  available bandwidth
with  new  carrier number's / bps rate  combinations, all the  facilities of the  VARA
system are maintained , monitor , chat module, bps , and  winlink connectivity.

Note the  level numbers are, then, not directly related 



Compatibility with  existing  installations is  maintained  , by automatic
mode detection , as  per  existing 2300 <>500  mode  switching .





Rig compatibility ,  ic7300  may be  directly  set  to the  required b/w, where  as the  ic7100   , requires the  use of the  SSB voice  
non  standard  bandwidth  settings  of 100 Hz <> 2900 Hz , further  details are  contained in the  pdf documentation 

73 -Graham
g0nbd




New VARA HF released 4-3-0 #VARA

Graham
 

New VARA HF released  4-3-0

New for  2021 ,  additional  2750 Hz bandwidth  mode added  to the  VARA  family 
utilising available  bandwidth,  maximum rate is  increased to 8489  Bps in 2750 Hz 
centered on 1500 Hz mid point  tone.

The  Modem architecture , being optimised to maximise the  available bandwidth
with  new  carrier number's / bps rate  combinations, all the  facilities of the  VARA
system are maintained , monitor , chat module, bps , and  winlink connectivity.

Note the  level numbers are, then, not directly related 



Compatibility with  existing  installations is  maintained  , by automatic
mode detection , as  per  existing 2300 <>500  mode  switching .





Rig compatibility ,  ic7300  may be  directly  set  to the  required b/w, where  as the  ic7100   , requires the  use of the  SSB voice  
non  standard  bandwidth  settings  of 100 Hz <> 2900 Hz , further  details are  contained in the  pdf documentation 

73 -Graham
g0nbd




new SW Radiogram program

 

Hello to all the digital folks out there.
 
A new program for the Shortwave Radiogram broadcasts has now been posted on the SW Radiogram website. 
 
If you're new to decoding digital, this is a pretty nice way to get your feet wet. You can use your desktop or laptop, or you can use an Android device such as a smartphone or tablet. You can find links to the SW Radiogram website, software for decoding, and wiki articles with extensive details and help at: http://www.udxf.nl/events.html.  
 
If you'd like to see a list of web receivers (which are often reported as being used), receiver, transceiver and SDR applications and more, take a look at the SW Radiogram gateway at https://wiki.radioreference.com/index.php/Shortwave_Radiogram_Gateway
 
Help is also available on Facebook and Twitter. The SW Radiogram website has the links. 
 
Radio Northern Europe International also uses digital modes during its broadcasts. See https://rnei.org/ for more information.
   
Here's hoping for good propagation and Happy New Year to all


video of K2MO sending images via VARA mode

Andrew OBrien
 


Re: How to install VARA HF on Kubuntu on WINE - Need help ! #ros #varim #RMSexpress #VARA #WinLink

BruceN
 

Thanks Serge,

It does help.

BruceN / K4TQL


Re: How to install VARA HF on Kubuntu on WINE - Need help ! #ros #varim #RMSexpress #VARA #WinLink

Serge Robitaille
 

Bruce,

I have installed WINE following these instructions : https://wiki.winehq.org/Ubuntu

The I have replaced the pdh.dll following the instructions in the previous url discussed.

Vara launched without error afterward BUT I launch it first before launching WinlinkExpress. So in my case, its a 2 step process.

Hope this help ?

Serge VA2SR/ZL


Re: How to install VARA HF on Kubuntu on WINE - Need help ! #ros #varim #RMSexpress #VARA #WinLink

BruceN
 

On Tue, Dec 22, 2020 at 09:34 PM, Serge Robitaille wrote:
https://www.bountysource.com/issues/92142283-idea-for-installing-old-pdh-dll-for-nt-4-0
Serge,

Was that all that you needed to do?  Were there other instructions to go along with what you cited?

BruceN / K4TQL


Re: How to install VARA HF on Kubuntu on WINE - Need help ! #ros #varim #RMSexpress #VARA #WinLink

Serge Robitaille
 

Got it working on a 32bits architecture with Rafael's help.
VARA 4.0.6 requires the following dll modification in System32 (https://www.bountysource.com/issues/92142283-idea-for-installing-old-pdh-dll-for-nt-4-0)
Ros is in the loop...maybe the both of them will address this issue in the next version of Vara.
Hope this help


Radio Northern Europe International Christmas special

 

Radio Northern Europe International has announced its Christmas special (which includes a digital portion), which starts broadcasting on the 23rd.  
See https://rnei.org/2020/12/21/radio-northern-europe-internationals-christmas-special-announcement/ for more information.
 
Per Roger on the World of Radio reflector regarding the use of PSK500.....

Sending PSK as AM modulation is less of a problem, but demodulation in AM should be avoided!  I recommend separate demodulation in USB and LSB, ideally from an IQ recording.In the case of the AM sum signal (left+right), there is often a destructive phase overlap and decoding problems.
 
Software as mentioned in the article:
Easypal: http://www.g0hwc.com/sstv_drm_news.html
WinDRM:  https://www.sigidwiki.com/wiki/WinDRM
7-Zip:   https://www.7-zip.org/
   
Here's hoping for good propagation 


Re: Windows 10 "listen to this device" option for VAC uses ?

Graham
 
Edited


Yes  good  point  John 

With this  ''not selected'' it's  not possible to route  audio  from  a  app  running  on 
say  sdr &  fire fox  to data  app  , vara ,  fldigi  etc  using the  internal  audio routing 

Selecting , allows the  windows  mixer to  be  selected as  audio  in 

Then  there  is  a  listen to this  device option, which if  activated  caused  [on my]  win10 set up  
something  like a ' wem copicat'  effect , loop round  delayed  audio 
feed  back ..all for  free  ..

Applicable to System audio  , as opposed to  device  audio -?

73- Graham 



Re: Windows 10 "listen to this device" option for VAC uses ?

John G8BPQ
 

Windows often has a "Stereo Mix" device to receive what you are sending. On a couple of machines it disapeared with an update, but these ideas fixed it (One on each machine)

https://thegeekpage.com/stereo-mix/

73,
John G8BPQ

On 22/12/2020 17:08, Andrew OBrien wrote:
In the old days, we used to choose a "listen to this device" option in the Windows "Recording" tab when wanting to hear the audio that VAC was piping to our digital mode software.  I looked again for this option in Windows 10 and do not see it.  Any suggestions?

Andy K3UK 


Re: Windows 10 "listen to this device" option for VAC uses ?

Graham
 

Andy -  May or may  not  be the  same ,  this was the  resolve of the  missing   ''one of the '' audio  usb links from the  ic7100 ..full  final,post  in 7100  group ..may be the  same for the  audio  cable ..

73-G

Problem solved 

 The  audio  codec  from the  7100    lists as  microphone ,  whereas  'all' the  apps   where  authorised  to

Use   ‘the’  pc  microphone , 

 There  is  a  separate , more  detailed authorisation   field  , in the  ''Manage  sound  devices''

I suspect , the  default  setting  was / is  Disable .. the  7100  was set to  disable  
[probably a  default , set when  win-10  overlayed  win-7]

 

Setting  to  Enable ,  codec is  now  listed as microphone ,  and showing in the  device input lists  

So, there  are  actually  , TWO  microphone  checks  on the  pc 

First the  audio  mic plugged into the  pc mother  board  sound  port 
second,  the  7100  codec  showing  as  microphone in the  listing 
which , has independent  enable  function .

73-Graham
g0nbd 


Re: Windows 10 "listen to this device" option for VAC uses ?

Graham
 

Andy 

There was something  odd  round  win10  and the  ic7100  missing  one of the  usb audio  feeds  , needing the  device in windows to be  'identified'  or similar .. there are two  or three  layers to the  audio  set  up .. just trying to  pick up  the  posts   , either  rsgb-tech  or the  7100  group ..icom uk had no idea at the  time , probably  post  win-upgrade 

73-Graham 


Re: Windows 10 "listen to this device" option for VAC uses ?

Ralph Mowery
 

Use two computers and pipe the sound from one to the other.

You can try this program.  Seems to work fair for me sometimes.







On Tuesday, December 22, 2020, 12:08:51 PM EST, Andrew OBrien <k3ukandy@...> wrote:


In the old days, we used to choose a "listen to this device" option in the Windows "Recording" tab when wanting to hear the audio that VAC was piping to our digital mode software.  I looked again for this option in Windows 10 and do not see it.  Any suggestions?

Andy K3UK 
_._,_._,_
._,_._,_


Windows 10 "listen to this device" option for VAC uses ?

Andrew OBrien
 

In the old days, we used to choose a "listen to this device" option in the Windows "Recording" tab when wanting to hear the audio that VAC was piping to our digital mode software.  I looked again for this option in Windows 10 and do not see it.  Any suggestions?

Andy K3UK 


Re: How to install VARA HF on Kubuntu on WINE - Need help ! #ros #varim #RMSexpress #VARA #WinLink

Graham
 
Edited

Ros suggests  contact , by email  :-

Rafael Dinitz:  rafael  AT   riseup.net 

73-Graham

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