Date   
Re: Call AA0AAA ? Opera over Es'hail-2 / QO-100 #opera

Graham
 

Tnx Ev, 

I thought as much , 

The  identical  time  stamp is indicative  of a  simultaneous   'off air'  decode
one station, one  call , then that's open to  random  noise  , note the rx   time stamp is from
the  decode  pc  clock 

73-Graham

2019-05-24 22:13:18 IK1WVQ AA R3D-262 KO94KS 0 1.296.600 -12 Op05_||||||||||||||_~13dB
2019-05-24 22:13:18 IK1WVQ AA SP5XSB KO02LD 0 1.296.600 -10 Op05_||||||||||||||||||_~11dB
2019-05-24 22:13:17 IK1WVQ AA PA1SDB JO33KH 0 1.296.600 -15 Op05_||||||||_~16dB
2019-05-24 22:13:17 IK1WVQ AA SV8RV KM07KS 0 1.296.600 -12 Op05_||||||||||||||||_~12dB

Looking back over the  last 24 Hrs  spots ,  there is  only  one  false  decode  listed , 

2019-05-24 07:47:12 PA3GYK JO21QQ R3D-262 KO94KS 2.234 1.296.600 2 Op05_||||||||||||||||||||||||||||||||||||||||||||||_3dB
2019-05-24 07:46:59 O0PQ AA PA3GYK JO21QQ 0 1.296.600 -18 Op05_||||_~18dB
2019-05-24 05:19:50 IK1WVQ JN44CB SP5XSB KO02LD 1.302 1.296.600 -13 Op05_||||||||||||_~14d

Stand alone digital TX #FT8 #jt9 #pi4 #wspr

Bo, OZ2M
 

Hello group

If you are looking for a stand alone solution to transmit digital signals like FT8, JT9, PI4 or WSPR from kHz to GHz then the RFzero www.rfzero.net might be just what you have been looking for. The RFzero is an "extended" Arduino Zero, with GPS and more, so you can modify the software yourself if you like.

Bo

Re: IS this Pactor 3 I have decoded ? #Pactor

Jeremy Allen
 

I know I'm late, but that's P3, specifically Speed level 1 and a few SL2's in there.  You can see it's SL1 with the 2 tones. 

As far as compression, the modems have built in PMC or Huffman compression that can be applied to the data stream in K-K or BBS QSO's.  In Winlink these are suppressed and the software uses B2F compression and the modem just transmits the 8-bit data without additional compression.

Most K-K is on 40 or 20M, but I guess some folks are on 80M as well.
--
73 DE N1ZZZ

Re: VARA working under Wine!

Graham
 

Q  Is this process  automated now,  batch file ect  ? or  still  in the above, step by step  format ? 

Tnx-Graham

g0nbd 

New release of MULTIPSK (4.39.1) #Multipsk

Patrick Lindecker
 

New release of MULTIPSK (4.39.1)

 

Pour les francophones: la version en français de ce message se trouve sur mon site (http://f6cte.free.fr). Il suffit de cliquer sur le lien "Principales modifications (courriel avertissant de la sortie de la nouvelle version)".


Hello to all Ham and SWL,

 

* The new release of MultiPSK (4.39.1) is on my Web site (http://f6cte.free.fr/index_anglais.htm).
* The mirror site is Earl's, N8KBR: https://www.paazig.net/f6cte/MULTIPSK_setup.exe

* The MD5 signature of the downloaded MULTIPSK_setup.exe file to, possibly, check (with WinMD5 for example), that the downloading works without error, is equal to: 7cd16b8616ec0883bdd11962a37edcbd

* Multipsk associated to Clock are freeware programs but with functions submitted to a licence (by user key).

 

The main improvements of MULTIPSK 4.39.1 are the following:

 

Addition of TCP/IP interfaces: "SRDplay" and "rtl_tcp.exe"

 

Pushing on the "SDRplay" or "rtl_tcp.exe" button of the "Configuration" screen permits to interface:

·                     either a SDRplay receiver, thanks to the TCP/IP server "rsp_tcp.exe",

·                     either a TNT receiver or compatible, thanks to the TCP/IP server "rtl_tcp.exe".

The frequency and the gain are adjustable through this interface.

The I/Q signal is taken from the receiver (TNT or SDRplay) through the TCP/IP server, at a sampling frequency 250 KHz, in the local loop adress: 127.0.0.1, port 1234. The TCP/IP adress and the port are configurable.

 

 

Improvement of the EGC decoding

The EGC (Enhanced Group Calls) service of Inmarsat C satellites uses the PSK modulation at 1200 bauds to send broadcast messages either to all ships or to ships located on a given area, from a NCSC (Network Control Station Channel). The geostationary Inmarsat satellites 4-F3, 3-F5, 4-F1 and 4A-F4 use frequencies around 1540 MHz for these transmissions

Necessary hardware: for these UHF frequencies, a stable receiver and without not too much shift is advised (RTL/SDR key as "RTL-SDR.COM V3", for example). A LNA ("Low Noise Amplifier") is necessary. It must be placed at the antenna output. A LNA specific to band L is advised. The antenna can be a Patch one or a helical one (right-hand circular polarization).

 

 

Note about translation of Multipsk.exe and Clock .exe:  the 4.39 version of Multipsk has been translated to Spanish by Joachin (EA4ZB), from French.

See: http://f6cte.free.fr/Translation_files.htm.

 

73

Patrick

 

 




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New release of MULTIPSK (4.39.1) - New package due to missing files #Multipsk

Patrick Lindecker
 

Hello to all,

 

As I realized that it was missing files (about SDRplay), I have just updated the Multipsk V.4.39.1 package. Sorry.

 

73

Patrick




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k3ukpage #facebook

main@digitalradio.groups.io Integration <main@...>
 

By digitalradio

FT* mode activity on 20M tonight

Astron Power Supplies For Sale #Power Supplies For Sale #power

Tony
 

All:

I have 3 like-new Astron power supplies for sale: SS-18 / SS-25 and SS-30M. All were purchased new for $400.0 in 2019.

Best offer takes all three. Pictures on request.

Paypal / CONUS only.

Tony -K2MO

Re: Astron Power Supplies For Sale #Power Supplies For Sale #power

Andrew O'Brien
 

Tired of Astron ?

On Jun 26, 2019, at 10:06 PM, Tony <DXDX@...> wrote:


All:

I have 3 like-new Astron power supplies for sale: SS-18 / SS-25 and SS-30M. All were purchased new for $400.0 in 2019.

Best offer takes all three. Pictures on request.

Paypal / CONUS only.

Tony -K2MO





Re: Astron Power Supplies For Sale #Power Supplies For Sale #power

Tony
 

Andy:

I'm downsizing the shack so there's no need for the extra hardware. I have a 35A supply as well as a smaller one so there's more than enough juice to power the rigs.

Hope all is well.

Tony -K2MO

On 6/26/2019 11:25 PM, Andrew O'Brien wrote:
Tired of Astron ?
On Jun 26, 2019, at 10:06 PM, Tony <DXDX@...> wrote:


All:

I have 3 like-new Astron power supplies for sale: SS-18 / SS-25 and SS-30M. All were purchased new for $400.0 in 2019.

Best offer takes all three. Pictures on request.

Paypal / CONUS only.

Tony -K2MO





New VARA HF v3.0.2 #VARA

Graham
 
Edited

Posted to the  VARA group  this morning ,  announcement , new  VARA  V3-0-2  has been  released , 

in addition , two  other  applications  are  released :-

VARA  Terminal : , allowing  connection  to  BPQ servers ,  deploying VARA modem  

CHAT  application , which allows the  modem to  be uses as  'QSO mode ,  
with  full  arq,  [ similar to  AMTOR ] for  live  keyboard text  and  file  transfer 
[NB unlicensed modem runs to  175 Baud]

Download links , as of  today  21/7

  VARA HF v3.0.2 (From July 27th onwards. No compatible with v2.2.1)

  VARA HF v2.2.1 (Old version, expires July 27th)

  VARA SAT v3.0.1 (For Es’Hail-2 (QO-100) Satellite)

  VARA FM v1.2.8 (For 2m,70cm FM Links)

  VARA Chat v1.0.7 (Text and File transfer P2P app)

  VARA Terminal v1.0.5 (VARA dumb terminal)


Copy follows 

________________________________________________________________________________

Good morning,
 
As some of you know, i have been working in a new VARA HF since months ago. The objective was improve all the lines of the code and, specially, increase the sensitivity with low S/N, getting good performance with bad and good conditions.
 
The result is the new VARA HF v3.0.2 and can be downloaded in the official VARA site without extra cost for VARA licenses:  https://rosmodem.wordpress.com/
 
Sysops have been notified by the WDT and will try replace VARA v2.2.1 by the v3.0.2 on July 27th (or even before) . 
 
The default retries in this new VARA is 10 (instead of 5) as now the connection protocol is faster. Set the number of retries that best fits with your usual Gateways. The time between retries is 3.2 seconds, so 10 retries are 32 seconds cycle. And DWELL time (for Gateway sysops) is 4 seconds.
 
special thanks to Martin HB9AUR for the countless hour spent testing VARA prototypes 
 
73
Jose
EA5HVK

Re: New VARA HF v3.0.2 #VARA

Andrew O'Brien
 

Interesting , thanks 
Andy


On Jul 21, 2019, at 9:32 AM, Graham <g0nbd@...> wrote:

[Edited Message Follows]

Posted to the  VARA group  this morning ,  announcement , new  VARA  V3-0-2  has been  released , 

in addition , two  other  applications  are  released :-

VARA  Terminal : , allowing  connection  to  BPQ servers ,  deploying VARA modem  

CHAT  application , which allows the  modem to  be uses as  'QSO mode ,  
with  full  arq,  [ similar to  AMTOR ] for  live  keyboard text  and  file  transfer 
[NB unlicensed modem runs to  175 Baud]

Download links , as of  today  21/7

  VARA HF v3.0.2 (From July 27th onwards. No compatible with v2.2.1)

  VARA HF v2.2.1 (Old version, expires July 27th)

  VARA SAT v3.0.1 (For Es’Hail-2 (QO-100) Satellite)

  VARA FM v1.2.8 (For 2m,70cm FM Links)

  VARA Chat v1.0.7 (Text and File transfer P2P app)

  VARA Terminal v1.0.5 (VARA dumb terminal)


Copy follows 

________________________________________________________________________________

Good morning,
 
As some of you know, i have been working in a new VARA HF since months ago. The objective was improve all the lines of the code and, specially, increase the sensitivity with low S/N, getting good performance with bad and good conditions.
 
The result is the new VARA HF v3.0.2 and can be downloaded in the official VARA site without extra cost for VARA licenses:  https://rosmodem.wordpress.com/
 
Sysops have been notified by the WDT and will try replace VARA v2.2.1 by the v3.0.2 on July 27th (or even before) . 
 
The default retries in this new VARA is 10 (instead of 5) as now the connection protocol is faster. Set the number of retries that best fits with your usual Gateways. The time between retries is 3.2 seconds, so 10 retries are 32 seconds cycle. And DWELL time (for Gateway sysops) is 4 seconds.
 
special thanks to Martin HB9AUR for the countless hour spent testing VARA prototypes 
 
73
Jose
EA5HVK

Re: New VARA HF v3.0.2 #VARA

Graham
 

Andy, 

I think  you  may find , the  new  'Chat' application , quite novel, in that  it gives access to the  modem at  all  speeds ,  but , I for  one  cannot  type that  fast ! , running the  'chat  app , calls the  vara  modem ,
Chat provides the  Rig  control  , via CAT or  Com-ptt  and the  modem  , the  audio interface  and  tune  button  ,  now a single  1500 Hz test  tone .The new modem has improved low  signal performance ,  this with the  arq  function , makes  for  low  power  error free  qso's , at power levels  much reduced  from the  days of amtor

Though not intended ,  the  unlicensed [free for all]  modem runs to  175  baud  level 3  , min being 40 baud  , ample  for  qso ,  but notably ,  for the  qrp  users , the  modem  remains  MFSK as  is the  ACK frame , being  phase continuous , allows it to be  passed  via non linear systems , ie , class  E/D  power  stages , which will  be of interest to the  low power / battery  emergency  situations ,  

Entering a valid key , enables the  faster  levels, which are ofdm and require  linear handling.

Might be of wider  interest to list  possible watering  holes  for  'vara chat' ? first over the  pond  might be a start !

73-Graham
g0nbd

Re: New VARA HF v3.0.2 #VARA

Andrew O'Brien
 

Thanks Graham, I have downloaded and it installed without issues.  Seems my registration from previous versions has been accepted.   I'm not actually sure how to use since almost all my previous use was with RMS Express.  I am not sure if there is again a stand alone use, will poke around some more.

Andy K3UK

On Mon, Jul 22, 2019 at 4:12 PM Graham <g0nbd@...> wrote:
Andy, 

I think  you  may find , the  new  'Chat' application , quite novel, in that  it gives access to the  modem at  all  speeds ,  but , I for  one  cannot  type that  fast ! , running the  'chat  app , calls the  vara  modem ,
Chat provides the  Rig  control  , via CAT or  Com-ptt  and the  modem  , the  audio interface  and  tune  button  ,  now a single  1500 Hz test  tone .The new modem has improved low  signal performance ,  this with the  arq  function , makes  for  low  power  error free  qso's , at power levels  much reduced  from the  days of amtor

Though not intended ,  the  unlicensed [free for all]  modem runs to  175  baud  level 3  , min being 40 baud  , ample  for  qso ,  but notably ,  for the  qrp  users , the  modem  remains  MFSK as  is the  ACK frame , being  phase continuous , allows it to be  passed  via non linear systems , ie , class  E/D  power  stages , which will  be of interest to the  low power / battery  emergency  situations ,  

Entering a valid key , enables the  faster  levels, which are ofdm and require  linear handling.

Might be of wider  interest to list  possible watering  holes  for  'vara chat' ? first over the  pond  might be a start !

73-Graham
g0nbd



--
Andy

where can I find remote controlled relay board ? #digital

ve3pie@...
 

does anyone recall the company selling a board with on-off relays (about 10 I think)
that also had a readout for voltage.
it could be remotely controlled via internet, and also you could define macros where you could control multiple relays at once, with one click.
I can't remember the company that sold this, or if there is something like on the market.
any suggestion are appreciated.
thanks, Fred VE3PIE / VE3WN

Re: where can I find remote controlled relay board ? #digital

Bo, OZ2M
 

Hi Fred

Perhaps units from RemoveQTH is what you are looking for: https://remoteqth.com/hf-switching-and-matching.php

73
Bo, OZ2M, www.rfzero.net

PR8KW Brazil <> Italy IS0GRB VARA E-malil over QO-100 #VARA #sat

Graham
 
Edited


IS0GRB Winlink Server on QO-100 (Dial 10489635.0 USB)


Successful test of  E-mail and File transfer,
have been  completed  by  PR8KW  ,
using the  WIN-Link  ground station  provided  by  IS0GRB

Test's  and  development  continue , at the  time of posting , 
VARA -SAT is at issue  3-0-4 

Last report being  :- 

Test with Vara Sat 3.0.4.

send 16484bytes in 03:30.

4686 bytes/minute.

Any so  equipped stations are invited to join in the  trials 
SWL's may monitor , by  web or off air,
using the  VARA monitor  function 



Progress is being  updated  to the  amsat forum 
https://forum.amsat-dl.org/index.php?user-post-list/373-pr8kw/



73-Graham
g0nbd

Re: New VARA HF v3.0.2 #VARA

Graham
 

Andy

Yes its bit clunky , but , the  intent  was/is to  provide  , fast  one-2-one comms ,  with  file transfer , 
good  reports are being  received  from the  E-Com  users ,  a new version  overcomes a  unexpected limitation  to  file  transfer  max size , that might of been  with the  high speed  VHF modems ,  

Due to the  rather poor  conditions,  testing over the  1000  mile HF  UK<>EA path was a  little  sprodic, only reached level 3 or 4  , however its up  and running , the  monitor function  in VAR should  enable  some sort of  round table aspect , 

73-G

Re: where can I find remote controlled relay board ? #digital

Joe
 

I purchased a Denkovi SNMP12 a few years ago that will probably do what you want.?? It has 12 SPDT relays (up to 15A), 8 ADC inputs (0-10V) and 8 digital inputs (0-12V).

<https://denkovi.com/ethernet-io-relay-module-snmp-web-12-relays>

Unfortunately, they are now "Out of stock".?? You might find something else on their website that will do the same thing.

I never used it for my ham radio remote base project.?? I don't remember why, but I used a different device to do what I wanted to do.?? The SNMP-12 did work fine, but all I was interested in at the time was a way to control AC outlets.?? I ended up using a Synaccess NetBooter NP-08 for the application.

My board is about 4-5 years old and was never put into use.?? If it is something you are interested in I'd sell it.

Joe, K1ike

ARRL/TAPR DCC - Call for Technical Presentations & Papers #digital

Mark Thompson
 


2019 ARRL/TAPR DCC 
(Digital Communications Conference) 

Detroit, MI (near airport) 
September 20 - 22

Call for Technical Presentations & Papers


Technical Presentations & Papers are solicited for presentation at the ARRL and TAPR Digital Communications Conference and publication in the Conference Proceedings. 

Annual conference proceedings are published by the ARRL.
Presentation at the conference is not required for publication. 


A Technical Paper is not required to make a Technical Presentation at DCC. 

If interested in making a Technical Presentation please contact TAPR President, Steve Bible, N7HPR at steven.bible@... 


Submission of technical papers are due by August 12, 2019 and should be submitted to:
Maty Weinberg, ARRL
225 Main Street
Newington, CT 06111

or via the Internet to maty@...

Full Details on Call for Papers & Submission Guidelines at:
https://www.tapr.org/dcc#dcccallforpapers