Date   

Re: VARA HF Modem Speeds

Tony
 

Andy:

Had to edit my whitelist to include gmail addresses. 

Please try again when you get the chance.

Tony -K2MO



On 1/17/2021 6:36 PM, Andrew OBrien wrote:
By the way Tony, I have sent you a few emails via your Winlink  address lately and each time winlink says nop such address.

Andy K3UK 

On Sun, Jan 17, 2021 at 5:45 PM Tony <73GUDDX@...> wrote:
All:

I observed an unusually fast file transfer while using VARA on 40 meters
today (see below). It's not uncommon to see speeds of 15,000 to 20,000
bytes/minute when the band is stable, but today's observation shows that
faster speeds are possible under the right conditions.

I should mention that the 30K b/m speed was recorded while receiving a
30K image.

Tony -K2MO



*** Winlink Vara Connection to KC8YJJ @ 2021/01/17 20:09:59  USB Dial:
7101.000
*** Station Bearing: 268,  Range: 393 miles
RMS Trimode 1.3.36.0
K2MO has 120 minutes remaining with KC8YJJ
{SFI = 078 On 2021-01-17 20:00 UTC}
[WL2K-5.0-B2FWIHJM$]
;PQ: 44766187
CMS via KC8YJJ >
    ;FW: K2MO
    [RMS Express-1.5.34.0-B2FHM$]

    ;PR: 17655197
    ; KC8YJJ DE K2MO (FN30JV)
    FF
;PM: K2MO 36Y27O2YLIPH 30887 73guddx@... ---
FC EM 36Y27O2YLIPH 32990 30887 0
F> C5
    FS Y
*** Receiving 36Y27O2YLIPH
*** 36Y27O2YLIPH - 33005/30899 bytes received
*** Bytes: 31145,  Time: 01:03,  bytes/minute: 29618
    FF
FQ
*** --- End of session at 2021/01/17 20:11:49 ---
*** Messages sent: 0.  Total bytes sent: 0,  Time: 01:49, bytes/minute: 0
*** Messages Received: 1.  Total bytes received: 31145,  Total session
time: 01:49,  bytes/minute: 17035
*** Disconnected from Winlink RMS: KC8YJJ @ 2021/01/17 20:11:56
*** Session: 1.9 min;  Avg Throughput: 15552 Bytes/min;   1 Min Peak
Throughput: 15552 Bytes/min








Re: VARA HF Modem Speeds

Andrew OBrien
 

By the way Tony, I have sent you a few emails via your Winlink  address lately and each time winlink says nop such address.

Andy K3UK 

On Sun, Jan 17, 2021 at 5:45 PM Tony <73GUDDX@...> wrote:
All:

I observed an unusually fast file transfer while using VARA on 40 meters
today (see below). It's not uncommon to see speeds of 15,000 to 20,000
bytes/minute when the band is stable, but today's observation shows that
faster speeds are possible under the right conditions.

I should mention that the 30K b/m speed was recorded while receiving a
30K image.

Tony -K2MO



*** Winlink Vara Connection to KC8YJJ @ 2021/01/17 20:09:59  USB Dial:
7101.000
*** Station Bearing: 268,  Range: 393 miles
RMS Trimode 1.3.36.0
K2MO has 120 minutes remaining with KC8YJJ
{SFI = 078 On 2021-01-17 20:00 UTC}
[WL2K-5.0-B2FWIHJM$]
;PQ: 44766187
CMS via KC8YJJ >
    ;FW: K2MO
    [RMS Express-1.5.34.0-B2FHM$]

    ;PR: 17655197
    ; KC8YJJ DE K2MO (FN30JV)
    FF
;PM: K2MO 36Y27O2YLIPH 30887 73guddx@... ---
FC EM 36Y27O2YLIPH 32990 30887 0
F> C5
    FS Y
*** Receiving 36Y27O2YLIPH
*** 36Y27O2YLIPH - 33005/30899 bytes received
*** Bytes: 31145,  Time: 01:03,  bytes/minute: 29618
    FF
FQ
*** --- End of session at 2021/01/17 20:11:49 ---
*** Messages sent: 0.  Total bytes sent: 0,  Time: 01:49, bytes/minute: 0
*** Messages Received: 1.  Total bytes received: 31145,  Total session
time: 01:49,  bytes/minute: 17035
*** Disconnected from Winlink RMS: KC8YJJ @ 2021/01/17 20:11:56
*** Session: 1.9 min;  Avg Throughput: 15552 Bytes/min;   1 Min Peak
Throughput: 15552 Bytes/min







VARA HF Modem Speeds

Tony
 

All:

I observed an unusually fast file transfer while using VARA on 40 meters today (see below). It's not uncommon to see speeds of 15,000 to 20,000 bytes/minute when the band is stable, but today's observation shows that faster speeds are possible under the right conditions.

I should mention that the 30K b/m speed was recorded while receiving a 30K image.

Tony -K2MO



*** Winlink Vara Connection to KC8YJJ @ 2021/01/17 20:09:59  USB Dial: 7101.000
*** Station Bearing: 268,  Range: 393 miles
RMS Trimode 1.3.36.0
K2MO has 120 minutes remaining with KC8YJJ
{SFI = 078 On 2021-01-17 20:00 UTC}
[WL2K-5.0-B2FWIHJM$]
;PQ: 44766187
CMS via KC8YJJ >
   ;FW: K2MO
   [RMS Express-1.5.34.0-B2FHM$]

   ;PR: 17655197
   ; KC8YJJ DE K2MO (FN30JV)
   FF
;PM: K2MO 36Y27O2YLIPH 30887 73guddx@gmail.com ---
FC EM 36Y27O2YLIPH 32990 30887 0
F> C5
   FS Y
*** Receiving 36Y27O2YLIPH
*** 36Y27O2YLIPH - 33005/30899 bytes received
*** Bytes: 31145,  Time: 01:03,  bytes/minute: 29618
   FF
FQ
*** --- End of session at 2021/01/17 20:11:49 ---
*** Messages sent: 0.  Total bytes sent: 0,  Time: 01:49, bytes/minute: 0
*** Messages Received: 1.  Total bytes received: 31145,  Total session time: 01:49,  bytes/minute: 17035
*** Disconnected from Winlink RMS: KC8YJJ @ 2021/01/17 20:11:56
*** Session: 1.9 min;  Avg Throughput: 15552 Bytes/min;   1 Min Peak Throughput: 15552 Bytes/min


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 has announced its new schedule for program 13.  
See https://rnei.org/2021/01/10/radio-northern-europe-international-show-13-announcement/ for more information. You can read about HamDRM (also known
as WinDRM) at https://www.sigidwiki.com/wiki/WinDRM
 
A tip for decoding PSK500 per Roger on the World of Radio reflector...
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.
 
Here's hoping for good propagation 


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. Watch out for a mystery mode under some music at the end of the program. 
 
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 


Re: European PSK on 40m ? PSK that dead ?

Graham
 

Andy, 

Setting just 'psk' in the map , produces a large number of qso'a 
Spread over the hf bands .. 

73 Graham
G0nbd


20M activity around 14070 today

Andrew OBrien
 

       
WT9S 20m OLIVIA 1911 miles 17:26:06
NR4A 20m OLIVIA 980 miles 17:04:53
N6CRR 20m PSK 2147 miles 17:57:31
W3BUG 20m PSK 240 miles 14:52:10
W4PKU 20m PSK 281 miles 14:40:26
ON3ANY 20m PSK 3773 miles 14:30:58
KB2DJJ 20m PSK 288 miles 14:22:09
N3OWM 20m PSK 1083 miles 20:36:02
KC3FL 20m PSK 949 miles 20:25:31
KD0UN 20m PSK 717 miles 20:24:05
WA1QZK 20m PSK 424 miles 20:24:03
W4VON 20m PSK 540 miles 20:22:11
KM4CQG 20m PSK 1049 miles 20:09:50
W7JIF 20m PSK 1880 miles 19:55:49
W4IOS 20m PSK 391 miles 19:40:48
NH7WB 20m PSK 1320 miles 19:40:09
KM4UDX 20m THOR 265 miles 15:28:52


Re: European PSK on 40m ? PSK that dead ?

Andrew OBrien
 

I left my radio on 7041 last night but had the Multipsk software hunting for any RS-ID over a couple of kHz range.  I picked up some Thor traffic from the USA around 1300 UTC on 
Andy K3UK 


Re: European PSK on 40m ? PSK that dead ?

M0PWX
 

for me, i see 7.042 as RTTY only, and 14.070 as mainly PSK31

the other issue i see is certainly on 7.042 i regularly see and hear  SSB voice  QSO's taking place

peter

2E0PWX

On Tue, 05/01/2021 14:41, Andrew OBrien wrote:
I spent a day monitoring 40M and 20m.  PSK31 on 14070 is still moderately active.  Typically 4-5 QSO at any given time.  Still, a lot less than the days of 20-30 QSOs at the same time. I worked Europe this morning with my QRP rig.
40M is pretty barren.  I heard no stations at all around 7041 but 2-3 were reported on PSKreporter, from Europe. In general, however, the 7040 area was totally quiet last night, no PSK heard here, no CW , no FT4.
Andy K3UK

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Re: European PSK on 40m ? PSK that dead ?

Andrew OBrien
 

I spent a day monitoring 40M and 20m.  PSK31 on 14070 is still moderately active.  Typically 4-5 QSO at any given time.  Still, a lot less than the days of 20-30 QSOs at the same time. I worked Europe this morning with my QRP rig. 
40M is pretty barren.  I heard no stations at all around 7041 but 2-3 were reported on PSKreporter, from Europe. In general, however, the 7040 area was totally quiet last night, no PSK heard here, no CW , no FT4. 
Andy K3UK


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

Graham
 

On Sat, Jan 2, 2021 at 05:16 PM, Siegfried Jackstien wrote:
nobody would moan about using 2.9kc ...
Hi Sigi ,  The  channel  could be  2.9 k , the VTAC  modem is 2.795  KHz  
but  probably would not  work, due to the  circuit delays 

VSAT is based on the 2KHz b/w  HF modem 
and supports the  extended  delay and provides
auto  capture and net ... 

May be when the  Moon  repeater is  installed , 
the 4 seconds will  also be catered for -)

73-Graham 


Re: European PSK on 40m ? PSK that dead ?

Tom DF5JL
 

Andi,

PSK31 is as good as dead in Europe. It is true.

73 Tom DF5JL
DARC HF Manager




Am 04. Jan.. 2021 um 03:34 schrieb Andrew OBrien:

I have not heard any PSK from Europe on 40m here in the USA for a long time . So I looked via PSKreporter and found no reported signals for the two hour period that I specified . Then I checked DX Watch specifying PSK31 as the mode . Nothing for several days , world wide ! PSK31 can’t be that dead , people not reporting it to spot sources anymore?

Andy K3UK


European PSK on 40m ? PSK that dead ?

Andrew OBrien
 

I have not heard any PSK from Europe on 40m here in the USA for a long time . So I looked via PSKreporter and found no reported signals for the two hour period that I specified . Then I checked DX Watch specifying PSK31 as the mode . Nothing for several days , world wide ! PSK31 can’t be that dead , people not reporting it to spot sources anymore?

Andy K3UK


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

Graham
 

Apparently it's 'listed in the beta version , not yet embodied in the current release.

73 Graham 
G0nbd


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

James Clark
 

Is selection of the new 2750 mode automatic?

When I start my registered copy of Vara V4.3.0 with Winlink Express V1.5.33.0 the speed displayed below the Vara waterfall is 2300 and I cannot find a method to select 2750, Winlink Express permits switching between 2300 and 500 but nothing else?


Re: New VARA HF v3.0.2 #VARA

Graham
 

Good question Andy,

Googling   vara  qso ,  did bring  back a  few  hits , one is a  winlk    p2p  net , not really a qso  as  such , there is a  IO vara  group  with  ~ 500 members ,  posting there might  help , look to  be  mostly  usa based .. personally , I would suggest, vara-hf with  chat module  provides  a  near  replication of the  days  of  amtor , but, with considerable gain in s/n ,the other being the  link remains in duplex , rather like packet , there is no  master/slave .. also the  link only sends data , when  data is presented ..ie no data , it stop's when keying pauses ..little  unnerving at first ..

Used to  take 250  watts  to work  usa east coast on 7 with  amtor , probably now 25w  would suffice , though  on link round test using the east coast  Main kiwi web sdr , 5 watts has supported similar s/n mfsk link

CQ/QSO  - sometimes the  translation is a  little askue , the  comparison is  pre coded  messages ,  triggered by  multiple pass , minimal  'on air'  content , to actually  transporting the  full  message  content ..in live text  , the system is most suited and  robust , having  spent  hours in qso  on 10 MHz  during  testing , a most  unstable  band 

73 -Graham
g0nbd


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

Graham
 

Interesting  Andy 

Any of the  VARA modes will  run over  FM link ,  during testing , with  local station on 6 metres ,  who , was suffering from  solar panel  qrm ,  during the  day, 'we found that  switching to  FM gave a  significant speed  improvement 

VARA-FM  , has  ' No Afc' , as is not needed  for fm link ,  as the  recovered  tone  range is  not  affected by the  transmission , Hence  'designated  'fm'   But ,  variations on the  theme , could be   AM , or pilot tone ssb ?  the FM mode  has  much higher tolerance to switching times , to accomodate  repeater  usage , so, yes , will  be ideally suited for MARS  usage , 

Considerable work was carried out , modifying the  vara-hf  mode to vara-sat , to use with the  ao-100   satellite , providing a  ping system, that  measured the  frequency off  set  and the  link  'round' delay time.. the  tests  where  posted to  one of the  amsat groups , not sure if the  ground  station  remains active ?

73-Graham 

nb: this version , could be  used for  any transmission  path,  I don't think there  is a  minimum delay .. 



Time for MMTTY replacement?

Andrew OBrien
 

Perhaps I should stick to the the adage “if it ain’t broke, don’t fix it”. MMMTY still remains the de facto RTTY software via implementation of the MMTTY “engine”. I remember when Mako was a member of this group and I actually wrote the English help file , hitherto everything was in Japanese.

Over the years MMTTY has had a few tweaks and some nice filter settings added to it . However , after setting up MMTTY with a new radio recently , it seems that the configuration process seems awfully dated and not at all intuitive. I think it’s about 19-20 years since MMTTY came out . I’m surprised no one else has come up with something new .

Andy


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

Andrew OBrien
 

Yes Graham . I just received a private email from USA air force MARS person interested in testing VARA FM on MARS repeaters . Interesting idea . 

Andy


On Jan 2, 2021, at 1:02 PM, Graham <g0nbd@...> wrote:

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

Siegfried Jackstien
 

an fm signal is way narrower as the tv datv signals is so you will have a way higher signal as the tv beacon (and other user will be a bit "pissed") ... on the other way if you lower your level to the same as the tv beacon ... its then only a few db over noise giving not enough signal to noise for a good fm decoding/demodulation ... so using the wideband transponder does not work

a well tuned setup should be spot on (also on qo100) ... how much mistune can the modem handle (if used on normal ssb mode?!?

if say 50 hz plusminus is ok ... then also netting should work in vara mode on the narrowband transponder ... if not in the new 2.9 kc wide mode ... then use the 2.3 kc mode ... that should work in any case

extended afc in vara sat?? ok then they arelready dealt with the mistune (and the time delay over the qo100 sat)

i did not try it yet ... so i can not say details or how well it works ...

HNY graham

greetz sigi dg9bfc

Am 02.01.2021 um 17:55 schrieb 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 

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