VARA HF Modem

VARA is a High Performance HF modem based on OFDM modulation. VARA Modem, brings  state of the  art Military  grade technology to  new  and  existing HF data.

Introduces a new  standard of technology available for Amateur and  Commercial use. Designed for operation within a SSB Bandwidth of 2400 Hz.

VARA (600 x 186)

Providing uncompressed User Data Rate to 5629 bps at a low  (S/N 14.5 dB @ 4kHz)

Levels

37,5 bps Symbol Rate with 52 carriers

Imagen1

 

  VARA HF Modem

 

 

97 Responses to “VARA HF Modem”

  1. José Alberto Nieto Ros Says:

    Harry,

    Here there is a quick guide:
    https://mega.nz/file/WGgXEC4Z#7q5oXmF0fy7Sb0zyb4md1FdP4JZA2jU0vSyel7i2CUo

    And here a Scott Currie presentation, with IC7100 example:
    https://mega.nz/file/GfYE3QgS#7_K-D0Xoo1E3uqKtnfBfvEsTj4GaPguLtbu1T-XGndc

    73
    Jose
    EA5HVK

  2. Harry Keith III Says:

    I am attempting to set up WINLINK with VARA on an ICOM m710. Is there any documentation to discuss the hardware side of this?

    Harry — KC3IAF

  3. José Alberto Nieto Ros Says:

    Hello Edward,

    Contact with VARA author: nietoros@hotmail.com

    73
    Jose
    EA5HVK

  4. Edward Feustel Says:

    Please tell me how to change my registration from N5EI to AI1R (my new call)! efeustel at hughes dot net. see qrz for confirmation.

  5. Don McCubbin Says:

    José, Thank you. Works great!

  6. José Alberto Nieto Ros Says:

    in VARA FM none settings

    Jose

  7. Don McCubbin Says:

    Rgr, thanks. I saw the setting in Winlink, but was wondering if there is a corresponding setting in VARA-FM? Will give it a try.
    73, Don, KM4DC

  8. José Alberto Nieto Ros Says:

    Hi Don,

    In Winlink express->VARA FM setup, you have to replace the “127.0.0.1” IP adress by the new IP adress (where you are running VARA).

    But i think you must open VARA manually. Better ask in the Winlink group.
    https://winlink.org/content/winlink_programs_group

    73
    Jose
    EA5HVK

  9. Don McCubbin Says:

    Hi, I saw the figure above showing Winlink on one PC and VARA-FM on another connected by a LAN. I would like to use this config but can’t figure out where to set an address and port in VARA-FM. Could you point me in the right direction. Our testing here routinely has VARA-FM running at level 6. Thanks for a great product.

  10. José Alberto Nieto Ros Says:

    Jason,

    that’s is for the automatic notification when a new version is avaiable. Recommended if you want to stay up to date.

    Jose
    EA5HVK

  11. Jason Fouts Says:

    My firewall recently started blocking traffic from VARA going out to 79.157.228.242 on port 8002. It does not seem to be affecting operations, but is the traffic needed?
    The address traces back to Spain and google flags it as malicious

  12. Dieter Pelz Says:

    Hi – re-started testing VARA last weekend with a friend in New Zealand. Very convincing, so I bought a licence today. Now I am looking for QSO partners in the VK-ZL or US, EU region. Propagation to EU still exists via LP on 20m on many days every month and US is almost daily within reach. 73 Dieter, VK3FFB

  13. José Alberto Nieto Ros Says:

    Hello Albert,

    I have just sent you an email

    Jose

  14. Albert Mitchell Says:

    José Alberto Nieto Ros,
    I’m currently the system operator for:
    AFA0AM = message board for Air Force Mars region 10
    AGA0MC = message board for Air Force Mars
    AFA0AM = my personal call for Air Force Mars
    I would like to know the price to license for all three stations.
    E-Mail amitchell4_24@msn.com

  15. José Alberto Nieto Ros Says:

    Hola Antoine,

    Hasta 450 bps ambos modos son similares. A partir de 450 bps el 2300 empieza a tomar ventaja hasta llegar a los 7050 bps. El Modo 500 solo llega a 1540 bps.

    saludos
    Jose

  16. Antoine Daly Says:

    Saludos Jose,

    Primero, gracias por el gran trabajo tuyo y de tu equipo. Tengo una pregunta técnica sobre el comportamiento de funcionamiento en la v4.0. Me explico, a igual condiciones de ruido, señal, etc. ¿La conexión a 2300 siempre será más rápida que la de 500? Y, de ser así, ¿por cuánto? Doble, triple…
    ¡Gracias!

  17. José Alberto Nieto Ros Says:

    Hello Gary,

    The license is valid for both VARA HF and FM.

    Jose
    EA5HVK

  18. William Mothena Says:

    Downloaded VARA HF and VARA FM and purchased a license. I am awaiting the license key – looking forward to getting VARA setup for Winlink. Is a separate key (and $69) needed for VARA FM?
    73 Gary N4GKM

  19. José Alberto Nieto Ros Says:

    Hola Emilio,

    Sí, se puede hacer el pago mediante transferencia bancaria. Te mando un email

    gracias,
    Jose EA5HVK

  20. EmilioRafael Martinez Fernandez Says:

    Queria ante todo decirle que gracias a su trabajo, el VARA es una gran ayuda para para nuestra red de emergencia, felicitaciones, va estupendamente en las diferentes situaciones que lo hemos probado en la version de prueba, queria solamente saber si puediera existir otra forma de pago que no sea por internet, ya que resulta muy dificil tener en nuestro pais una tarjeta para este tipo de pago. Saludos
    CO6XE…

  21. José Alberto Nieto Ros Says:

    yes, writing to the author: nietoros@hotmail.com :-))

  22. w5rmw Says:

    any way to recover key? page is not accepting my email

  23. Mexican Amateur Radio Volunteers Providing Communication in Wildfire Response – Storm-Tech Nomad Says:

    […] had been using Winlink but added the weak-signal software Vara HF, after José Alberto Nieto, EA5HVK, provided a Vara license on short notice. Tom Whiteside, N5TW, […]

  24. José Alberto Nieto Ros Says:

    Hello Jim,

    In 45 min i arrive to home and send you the registration code

    Jose

  25. Spitfire Says:

    Hi Jose,

    I just bought Vera 3.04 from the trial box in Winlink. I got a PayPal receipt but how do I activate it in Winlink? Thank you.

    73 – KF4LGV, Jim

  26. José Alberto Nieto Ros Says:

    Hello Kurt,

    depend on the consditions. But you can test negative SNR condition with the trial version even.

    73 Jose
    EA5HVK

  27. W. Kurt Dobson Says:

    Jose,

    For the Vara modem, you show 11 different speeds. Can you provide what SNR the speed changes at. Specifically I am interested in whether the Vara modem will operate in a negative SNR condition.

  28. José Alberto Nieto Ros Says:

    Hola,

    En radioafición, aunque fuera de 200dB no vas a notar ninguna diferencia, ya que el ruido radioeléctrico y la distorsión del canal es infinitamente mayor que el propio de la tarjeta de sonido. Cualquier tarjeta de sirve de sobra

    saludos

  29. Pirat3 Box Says:

    Es mejor para VARA una tarjeta de sonido con mejor SNR? He visto que algunos equipos como el FLEX o ICOM traen incorporadas unas tarjetas bastante pobres (pcm2901) con un SNR bajo, de 89DB y he visto otras tarjetas mas profesionales como algunas Sound Blaster que traen un SNR de 116DB y en definitiva, todo bastante mejor, como la “respuesta de frecuencia” o la “distorsión armónica”.

    Saludos

  30. José Alberto Nieto Ros Says:

    funciones de sincronizacion

  31. ANgazu Digital Says:

    Hola Jose Alberto

    Segun los analisis, el modem usa una libreria de 48 tonos para los MFSK y OFDM.
    En algunos ACK y algún final de emisión en MFSK , aparece un tono 49 en la parte superior del espectro. ¿Tiene alguna función especial?

    Gracias.
    ANgazu.

  32. José Alberto Nieto Ros Says:

    Son señales de calibración de VARA SAT

  33. Pepe potamo Says:

    Hola.
    Gracias por responder.

    Las grabaciones las efectue del satelite EsHail2 y antes de la llamada del modem aparecen las partes en banda estrecha.

    Si me envias un correo a angazu@radiofrecuencias.es te manso el espectrograma y algun tros de señal para que lo veas.

    Saludos.
    ANgazu.

  34. José Alberto Nieto Ros Says:

    Hola Angazu,
    ¿que grabaciones?

  35. Pepe potamo Says:

    Hola.
    En algunas grabaciones hay una especie de llamada usando 7fsk con los mismos parametros que la llamada normal del VaraSat modem. ¿Pertenece a este modem?

    Saludos y gracias.
    ANgazu.

  36. Jabi Aguirre Says:

    Hola Jose. Me dice Aitor de Gasteiz que estas buscando beta tester para el QO-100. Cuenta conmigo.Mi email es: petorrin@euskalnet.net
    73,s de Jabi, ea2aru.

  37. José Alberto Nieto Ros Says:

    send me some screenshot to my email

  38. Peter Knol Says:

    I did ask a om here in my area to instal Chat + VaraSAT. He, PA4GB (also QO100 active) has the same problem. TCP led stays red. No communication. Today I did switch all virus scanners off, but also no luck…

  39. Peter Knol Says:

    I did delete all VARA stuf. After reinstal and start Chat, Windows Defender Firewall asks if it is ok that VaraHF gets acces to network. Same happens when I start VaraFM. That Windows Defender Firewall does not pop up when I start VaraSAT. Looks like it does no request to acces the network. But I will focus at firewalls and virusscanners now…

  40. José Alberto Nieto Ros Says:

    maybe your antivirus have blocked TCP connections in VARA Sat

  41. Peter Knol Says:

    Yes. Vara Sat. I will reinstall the software. On a 2nd computer where the results the same. I did on both computers that ‘ virus check over rule ‘ thing. Map C:/VARA. I’ll try again…

  42. José Alberto Nieto Ros Says:

    Peter,

    have you installed VARA SAT?

  43. José Alberto Nieto Ros Says:

    Here it’s working perfectly. You have to check if the path is right

    73 Jose

  44. José Alberto Nieto Ros Says:

    Ok, after i will test it at home

  45. Peter Knol Says:

    I tried such befor. I tried port 8400. Did not work. I just tried 8320. Still no TCP connection. When I hit Connect I get the message ,VARA Chat is not connected with VARA modem, !

  46. José Alberto Nieto Ros Says:

    Then there is a conflict with TCP ports. Select 8320 port in both VARA SAT and VARA Chat. Then try again

  47. Peter Knol Says:

    Yes. In Chat i select Varasat. No TCP connection but modem starts o.k. Works fine when I select VaraHF modem. Then led TCP is green. PATH TO varaSat is ok, otherwise it wil not strar the modem…

  48. José Alberto Nieto Ros Says:

    Peter,
    In Vara Chat setup you have to select “vara sat”.

    73, jose
    Ea5hvk

  49. Peter Knol Says:

    Hello. I did install VaraSat but it does not comminicate with chat. When i sellect Vara HF it does work. VaraHF works via local loopback cable between 2 computers. It does not work via QO100. Timing problem ? But back to the top: Chat does start VaraSat, but that TCP led stays Red…

  50. José Alberto Nieto Ros Says:

    Yes, it’s my development. 73, Jose EA5HVK

  51. KarapuZ (@India_Papa_Golf) Says:

    Sorry, “razarabotki” = development!

  52. José Alberto Nieto Ros Says:

    what is razarabotki?

  53. KarapuZ (@India_Papa_Golf) Says:

    Question to the respected author and developer of VARA HF – Alberto, work on the frequencies of the QO-100 / Es’hail-2 satellite is marked
    modem, presumably in ARQ mode, with signal parameters: MFSK-48 (dF = 46.74 Hz V = 46.75 bps) and MFSK-24 (dF = 93.5 Hz V = 93.75 bps). My colleague and friend Cryptomaster published a material with signal analysis at the link:
    http://www.radioscanner.ru/forum/index.php?action=search&loc=1&forum=21&topic=36750&page=1442126
    Actually the question itself – do your razarabotki to this signal related?
       Regards and best wishes from Russia!
    Danila (KarapuZ).
    73!

  54. Mexican Amateur Radio Volunteers Provide Communication in Wildfire Response – Coast Emergency Communications Association Says:

    […] had been using Winlink but added the weak-signal software Vara HF, after José Alberto Nieto, EA5HVK, provided a Vara license on short notice. Tom […]

  55. The ARRL Letter for June 6, 2019 | Big Island ARRL News Says:

    […] had been using Winlink but added the weak-signal software Vara HF, after José Alberto Nieto, EA5HVK, provided a Vara license on short notice. Tom Whiteside, N5TW, […]

  56. Mexican Amateur Radio Volunteers Providing Communication in Wildfire Response - Town Of Islip ARES/RACES Says:

    […] had been using Winlink but added the weak-signal software Vara HF, after José Alberto Nieto, EA5HVK, provided a Vara license on short notice. Tom Whiteside, N5TW, […]

  57. Mexican Amateur Radio Volunteers Providing Communication in Wildfire Response Says:

    […] had been using Winlink but added the weak-signal software Vara HF, after José Alberto Nieto, EA5HVK, provided a Vara license on short notice. Tom Whiteside, N5TW, […]

  58. Mexican Amateur Radio Volunteers Providing Communication in Wildfire Response - Nerfd.net - RF News & Info Says:

    […] had been using Winlink but added the weak-signal software Vara HF, after José Alberto Nieto, EA5HVK, provided a Vara license on short notice. Tom Whiteside, N5TW, […]

  59. rafael manuel lorenzana ruz Says:

    thank you very much, for answering, sorry they know of some manual, for the program trimode, to activate the server

  60. José Alberto Nieto Ros Says:

    Hello Rafael,

    That was the very old version. Now VARA is integrated in Winlink. You can put a Gateway with Trimode software

    73 Jose
    ea5hvk

  61. rafael manuel lorenzana ruz Says:

    Greetings, with this version 2.2.1, as I can put it to be a gateway, to be a server.

    with the previous versions you only selected it, in this new version I no longer see this option.

    Thank you
    rafael
    xe3vk

  62. José Alberto Nieto Ros Says:

    Its a false positive Howard, dont worry. Add an exclussion to c:\vara folder

    73, jose
    Ea5hvk

  63. Howard Waxman WZ4K [AKQ] Says:

    I know this has been addressed but feel compelled to revisit the “false-positive”. I’m using SuperAntiSpyware and it gives a specific positive hit:
    Trojan.Agent/Gen-SmokeLoader.Process-2 – (Variant 332449)
    Trojan that may log user information and possibly block access to certain security related sites. Threat Level (1-10): 5

    Please advise, thank you, 73, Howard, WZ4K

  64. José Alberto Nieto Ros Says:

    Hello Warren,

    It’s a false positive

    Jose
    ea5hvk

  65. Warren Yursik Says:

    I downloaded the zip file VARA Modem v2.2.1 (High performance HF modem). McAfee halted the installation when it discovered a virus.

    Is this a fact or is it a false positive?

    73
    Warren

  66. José Alberto Nieto Ros Says:

    Hello Curtis,

    You need to do an exclusion to C:\VARA folder in Windows Defender.

    This quick guide explains how:
    https://mega.nz/#!TSR0RABa!pIrpYBMED3YHT5wTs8WgvtxMWJn3YNL_LPI5VGwiLAU

    73 Jose
    EA5HVK

  67. Curtis Price Says:

    I have downloaded and uncompressed the VARA HF files. Run the setup as an administrator. I finally was able to find the .exe file, however that file gets erased or deleted when it is opened. Any ideas? Running Win10 pro on a Surface and HP desktop same thing happens on both computers. RMS express is the latest version.
    Thanks.
    Curtis Price, K6IBP

  68. Rafael Muñoz Says:

    perfecto, gracias José Alberto¡

  69. José Alberto Nieto Ros Says:

    Apúntate al VARA google group. Ya se están haciendo pruebas con la versión de VARA FM: https://groups.google.com/forum/#!topic/varahfmodem/0Mcplhmr-Vw

  70. Rafael Muñoz Says:

    Intentaré hacer pruebas porque sería muy interesante reinventar un packet 2.0 mejorando con respecto al FSK 300bd.

    Por cierto con Winlink funciona perfectamente, enlaces con VE y USA desde EA sin ningún problemas y a velocidades razonables incluso con S/N negativo.

  71. José Alberto Nieto Ros Says:

    Hola Rafael,
    Supongo que sí que es posible, ya que lo que se hace al fin y al cabo es enviar información de A a B.

  72. Rafael Muñoz Says:

    ¿se podría utilizar este modem para construir una red packet radio con aplicaciones como ui-view o digipiater, etc??. Podría ser interesante por su eficiencia con niveles de baja S/R

  73. José Alberto Nieto Ros Says:

    Hello Rien,

    You need to download Winlink Express

    Jose

  74. Rien Aarden Says:

    Hello I’m brand New And Have download VARA but I’m realy do not know how to configurate the software .
    is there someone who can help me with this or is this only for Users that are pay for the software?
    I’m realy new with this and hope that I can try this mode with some help from someone!
    Tnx Rien, PA7RA

  75. José Alberto Nieto Ros Says:

    Hugh,
    It’s a false positive, not a virus
    Jose

  76. Hugh Wardlaw (@HEWscsi) Says:

    VARA does not work. It has a virus.

  77. José Alberto Nieto Ros Says:

    Yes, it is a modification

  78. KarapuZ (@India_Papa_Golf) Says:

    A question to the respected author is that in a frequency range of 40 meters there are 52-channel OFDM with Symbol Rate 41.6 bps in channels and a frequency shift of 46.8 Hz. Is this a modification of your VARA HF modem?
      Here is a link to this material:
    http://www.radioscanner.ru/forum/index.php?action=search&loc=1&forum=21&topic=36750&page=1370929

  79. José Alberto Nieto Ros Says:

    nietoros@hotmail.com

  80. Juhani Tuovinen Says:

    Hello José!

    We have tested the OH7TE OH5ZN test version of the VARA FM by getting through OH5RM, please send me your email address for the test results

    yufenau@gmail.com
    OH7TE “Yussi”

  81. José Alberto Nieto Ros Says:

    Mark,
    It’s a false positive

  82. Mark Carpenter Says:

    Windows Defender gave me the following message when I downloade, VARA 2.1.0 setup:

    Trojan:Win32/Fuerboos.C!cl

    Alert level: Severe
    Status: Quarantined
    Date: 3/24/2018

    Recommended action: Remove threat now.

    Category: Trojan
    Details: This program is dangerous and executes commands from an attacker.

  83. Winlink Express: ARDOP & VARA integrated – "What hath God wrought?" Says:

    […] there is a beta version of Winlink Express 1.5.11.1 which integrates the new Modes ARDOP and even VARA. There is also an update for the corresponding RMS Trimode software (the counterpart für RMS […]

  84. guillermo albizua Says:

    CP6GA
    Lo probe desde Bolivia y funciono en 20m via Bern. Conecto en la primera, excelente, ahora por lo visto no hay buenas condiciones y veo a la mayoria en 40 m pero no tengo antena para ello, Felicidades

  85. Carlos Gascón Saso Says:

    Gracias Alberto, he estado mirando de que se trata el sistema Winlink. Lo he puesto en modo automático y cada cierto tiempo emite la señal e intenta conectarse con la estación Gateway a ver si le voy cogiendo el truco. También he puesto un mensaje de prueba en la bandeja de salida del correo. A ver si se conecta y lo consigue enviar.

  86. José Alberto Nieto Ros Says:

    Hola Carlos. Para manejarlo primero tienes que estar familiarizado con el sistema Winlink. No se trata de un modo tipo QSO.

  87. Carlos Gascón Saso Says:

    Saludos a tod@s. He descargado el programa VARA y lo tengo ya instalado, pero hay unas cuantas cosas que no entiendo muy bien, a ver si me podéis explicar un poco.
    – Cliente y gateway
    – Hay que colocarse en alguna frecuencia específica como en Ópera o en Ros???
    – Etc…
    Si me podríais explicar un poco para poder empezar a manejarlo, aunque sea por encima para hacerme un poco a la idea de su funcionamiento.

  88. José Alberto Nieto Ros Says:

    it’s not my development. The commercial version of VARA is already in this site

    73!
    EA5HVK

  89. KarapuZ (@India_Papa_Golf) Says:

    I see very similar signals outside the amateur bands. But the OFDM segment of the modem has differences – 60 channels with a speed of 40 bps and a spacing of frequencies between them of 50 hertz. In this connection, the question for the respected author is – tell me, this is one of the versions of your modem, maybe commercial, or it’s just a coincidence and it’s not your development.
      The records of the 60 channel modem are available via the link:
    http://www.radioscanner.ru/files/unknown/file20219/
      73!
    KarapuZ

  90. Juhani Tuovinen Says:

    We test also 80 m here under aurora zone and bad selective fading -but working very well!
    Yussi OH7TE

  91. Juhani Tuovinen Says:

    VARA workin fb here in OH, v high speed connects.

    73 tu OH7TE Yussi

    >>>
    Sent 1 message. Bytes: 93437, Time: 07:30, bytes/minute: 12456

  92. José Alberto Nieto Ros Says:

    Así funciona la cosa Roberto, por eso dudé si subirlo a internet o dejarlo guardado en el disco duro.
    En Marzo me llega un toroide de ferrita y tendré operativa una estación EMCOMM en 30m con VARA. De momento lo tengo provisional en 10 metros.

  93. Roberto Sánchez Says:

    Gracias por tu trabajo, muy bueno por cierto.
    Ayer pude conectar a HB9AK y con niveles ridiculos estuvo enviandome la informacion, de 10 la robusted del protocolo.
    Lastima de no ser Norteamericano, seguro que ya habia cientos de personas usandolo 😉
    Un abrazo de EB1HHA

  94. IV3VJH Emanuele Says:

    Nice 👍

  95. Peter Martinsen Says:

    VARA 7050 for a few hours (Gateway) de OZ1PMX Peter

  96. José Alberto Nieto Ros Says:

    you are right, Luis

  97. Luís Garcia Filipe Says:

    Alberto, is a new moden for winlink, correct? 73 CT7AEL

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