Re: Windows USB Drivers for VARA and DRA-50 on Yaesu FT-991A
And as Marvin said, from the USB port on my laptop to the data connector on the back of the FT-991A. No extra equipment needed. No special cable.?
Howard KO6ATE
Sent via the Samsung Galaxy S8+, an AT&T 5G Evolution capable smartphone
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-------- Original message -------- From: "Howard via groups.io" <hjohns1224@...> Date: 9/17/24 16:43 (GMT-08:00) Subject: Re: [VARA-MODEM] Windows USB Drivers for VARA and DRA-50 on Yaesu FT-991A
As Bob said, I use Winlink with good results
Howard KO6ATE
Sent via the Samsung Galaxy S8+, an AT&T 5G Evolution capable smartphone
-------- Original message -------- From: "Grant Rostig KI5VLA via groups.io" <grant.groups.io@...> Date: 9/17/24 14:46 (GMT-08:00) Subject: Re: [VARA-MODEM] Windows USB Drivers for VARA and DRA-50 on Yaesu FT-991A
Hi All,
?
I spent 45 minutes looking for a website that sells VARA HF and can't find it.? I don't know who wrote the software, or if there is documentation, or if there is a book.
?
Actually I don't even know what it is beyond a communication protocol.
?
Does anyone know?
?
73
Grant Rostig
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Re: Windows USB Drivers for VARA and DRA-50 on Yaesu FT-991A
On 9/17/2024 8:25 PM, Marvin Penepent
wrote:
I use VARA fm and
VARA HF on a FT-991A with out any extra equipment. It has
its own soundcard so nothing extra needed. I also use it for
WinLink.
?
Note that you CANNOT achieve the highest speeds VARA-FM is
capable of with the built-in '991 sound card. It doesn't have
enough audio bandwidth.? To get the full 25,000 baud speed
possible on VARA-FM, you must use an external interface like a
Masters DRA or SignaLink connected to the 6-pin MiniDIN "DATA"
port on the '991.
The built-in sound card of the '991 CAN do the highest speeds
possible on VARA (the HF variety) on HF/SSB modes.
Stephen H. Smith??? wa8lmf (at) aol.com
Skype:??????? WA8LMF
EchoLink:? Node #? 14400? [Think bottom of the 2-meter band]
Home Page:?????????
APRS-over-VARA igates now operating on 30 & 60 meters
??
"Studio B" Ham Shack on Wheels
??
-- APRS over VARA? --
??
?
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Re: Windows USB Drivers for VARA and DRA-50 on Yaesu FT-991A
Go to your web search, Google or whither you use. Type in? That link takes your the main VARA page. Info there will explain everything to you if you take the time to read thoroughly.
73 Dave N4CVX
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Re: Windows USB Drivers for VARA and DRA-50 on Yaesu FT-991A
You can dl from the author here or from the Winlink.org site also
?
?
?
Lloyd KO4L?
?
?
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Re: Windows USB Drivers for VARA and DRA-50 on Yaesu FT-991A
I use VARA fm and VARA HF on a FT-991A with out any extra equipment. It has its own soundcard so nothing extra needed. I also use it for WinLink. ?
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From: [email protected] < [email protected]> On Behalf Of Howard Sent: Tuesday, September 17, 2024 6:43 PM To: [email protected]Subject: Re: [VARA-MODEM] Windows USB Drivers for VARA and DRA-50 on Yaesu FT-991A ? As Bob said, I use Winlink with good results Sent via the Samsung Galaxy S8+, an AT&T 5G Evolution capable smartphone -------- Original message -------- Date: 9/17/24 14:46 (GMT-08:00) Subject: Re: [VARA-MODEM] Windows USB Drivers for VARA and DRA-50 on Yaesu FT-991A I spent 45 minutes looking for a website that sells VARA HF and can't find it.? I don't know who wrote the software, or if there is documentation, or if there is a book. Actually I don't even know what it is beyond a communication protocol. -- Marvin L. Penepent
KF5MLP
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Re: Windows USB Drivers for VARA and DRA-50 on Yaesu FT-991A
As Bob said, I use Winlink with good results
Howard KO6ATE
Sent via the Samsung Galaxy S8+, an AT&T 5G Evolution capable smartphone
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-------- Original message -------- From: "Grant Rostig KI5VLA via groups.io" <grant.groups.io@...> Date: 9/17/24 14:46 (GMT-08:00) Subject: Re: [VARA-MODEM] Windows USB Drivers for VARA and DRA-50 on Yaesu FT-991A
Hi All,
?
I spent 45 minutes looking for a website that sells VARA HF and can't find it.? I don't know who wrote the software, or if there is documentation, or if there is a book.
?
Actually I don't even know what it is beyond a communication protocol.
?
Does anyone know?
?
73
Grant Rostig
|
Re: Windows USB Drivers for VARA and DRA-50 on Yaesu FT-991A
Start by downloading Winlink.? You will find links to download VARA on the Winlink site.? It’s the best performing soft modem for HF.
Hi All,
?
I spent 45 minutes looking for a website that sells VARA HF and can't find it.? I don't know who wrote the software, or if there is documentation, or if there is a book.
?
Actually I don't even know what it is beyond a communication protocol.
?
Does anyone know?
?
73
Grant Rostig
|
Re: Windows USB Drivers for VARA and DRA-50 on Yaesu FT-991A
Grant,
I see others have answered your questions on where to find the software and instructions.
Once you get your software set up, contact me and I will send you an Excel file showing the FT-991A menu settings that I use to get VARA-HF to work. It also will show settings for VARA-FM and VARA C.
Be patient. It is a great way to communicate. I just went through this learning curve over the last 6 months.
Once you get it working, let's try to use it to contact each other.
Cheers,?
Howard KO6ATE
Sent via the Samsung Galaxy S8+, an AT&T 5G Evolution capable smartphone
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-------- Original message -------- From: "Grant Rostig KI5VLA via groups.io" <grant.groups.io@...> Date: 9/17/24 14:46 (GMT-08:00) Subject: Re: [VARA-MODEM] Windows USB Drivers for VARA and DRA-50 on Yaesu FT-991A
Hi All,
?
I spent 45 minutes looking for a website that sells VARA HF and can't find it.? I don't know who wrote the software, or if there is documentation, or if there is a book.
?
Actually I don't even know what it is beyond a communication protocol.
?
Does anyone know?
?
73
Grant Rostig
|
Re: Windows USB Drivers for VARA and DRA-50 on Yaesu FT-991A
Jose Alberto Nieto Ros <nietoros@...>
??EA4HVK
nietoros@...
he is the author
source for softwre.
??? GOOD UTUBE SETUP AND USE
??MANY OTHERS FOR VARA
LICENSE INFO IN VARA SETUP PAGE. RUNS FASTER WITH LICENSE.
?
NOEL MORTIER
W9NMM
?
?
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From: [email protected] <[email protected]>
On Behalf Of Grant Rostig KI5VLA via groups.io
Sent: Tuesday, September 17, 2024 2:01 PM
To: [email protected]
Subject: Re: [VARA-MODEM] Windows USB Drivers for VARA and DRA-50 on Yaesu FT-991A
?
I spent 45 minutes looking for a website that sells VARA HF and can't find it.? I don't know who wrote the software, or if there is documentation, or if there is a book.
Actually I don't even know what it is beyond a communication protocol.
|
Re: Windows USB Drivers for VARA and DRA-50 on Yaesu FT-991A
toggle quoted message
Show quoted text
Hi All,
?
I spent 45 minutes looking for a website that sells VARA HF and can't find it.? I don't know who wrote the software, or if there is documentation, or if there is a book.
?
Actually I don't even know what it is beyond a communication protocol.
?
Does anyone know?
?
73
Grant Rostig
|
Re: Windows USB Drivers for VARA and DRA-50 on Yaesu FT-991A
toggle quoted message
Show quoted text
Hi All,
?
I spent 45 minutes looking for a website that sells VARA HF and can't find it.? I don't know who wrote the software, or if there is documentation, or if there is a book.
?
Actually I don't even know what it is beyond a communication protocol.
?
Does anyone know?
?
73
Grant Rostig
|
Re: Windows USB Drivers for VARA and DRA-50 on Yaesu FT-991A
Hi All,
?
I spent 45 minutes looking for a website that sells VARA HF and can't find it.? I don't know who wrote the software, or if there is documentation, or if there is a book.
?
Actually I don't even know what it is beyond a communication protocol.
?
Does anyone know?
?
73
Grant Rostig
|
Re: Using VARA HF on VHF FM
On Sat, Sep 14, 2024 at 12:06 AM, k3eui barry wrote:
VARA FM lacks that feature. Or, to say it more plainly, VARA FM pitch of a tone does not change during the handshaking dance.
The name FM is linked to the? intended? transmission sytem , FM?
?
The audio spectrum from Tx <> Rx remains fixed in FM system , hence no 'AFC' needed?
?
Hetrodyned systems ie SSB? require exact aligment of Tx and Rx to achive? zero frequency
off-set - hence AFC attemps to elimiate errors and track drift?
?
73-Graham
g0nbd?
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TUNE requires a VARA modem license
Which I have; And it is correctly entered. And I have been using this one for a few years.
?
Suddenly, in Linux Mint, I get this nag though ...been trying for several days to correct the issue. It works on another of my servers.
?
Bob NR4U EM88
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Re: Using VARA HF on VHF FM
I would disagree.? All versions of VARA use OFDM, ?multiple carriers (tones) each modulated at a slower rate using DPSK. ? The initial handshake uses dual PSK, so two “tones”.? When sending data payloads, there is an ACK after each data frame of about five seconds.? The modulation level can increase or decrease according to the ACK report.? In all cases, it’s audio as far as the radio is concerned.
On Fri, Sep 13, 2024 at 7:06?PM k3eui barry via <k3euibarry= [email protected]> wrote: ?
?
VARA HF (used with HF SSB radios) has the ability to alter the audio frequency ?at the sound card level in order to maximize throughput. It does that during the “handshaking” dance when a link is made with an ssb radio.
?
The software does NOT attempt to alter the VFO carrier frequency.
You can see the change in audio pitch on the meter on the VARA HF window.
?
?
VARA FM lacks that feature. Or, to say it more plainly, VARA FM pitch of a tone does not change during the handshaking dance.
?
?
A friend and I tried to run VARA HF ?on a 2m FM simplex frequency - it did not work. Then we tried using VARA ?FM on an 80m SSB radio - it also did not work.
Just a test to confirm - you must use the VARA FM modem with a 2m FM radio.
?
?
If you wanted to scan both HF ssb frequencies and VHF/UHF FM frequencies - you have a problem.
I’m sure the VARA programmers have a more thorough answer.
?
de k3eui. barry. Phila PA
?
?
|
Re: Using VARA HF on VHF FM
?
?
VARA HF (used with HF SSB radios) has the ability to alter the audio frequency ?at the sound card level in order to maximize throughput. It does that during the “handshaking” dance when a link is made with an ssb radio.
?
The software does NOT attempt to alter the VFO carrier frequency.
You can see the change in audio pitch on the meter on the VARA HF window.
?
?
VARA FM lacks that feature. Or, to say it more plainly, VARA FM pitch of a tone does not change during the handshaking dance.
?
?
A friend and I tried to run VARA HF ?on a 2m FM simplex frequency - it did not work. Then we tried using VARA ?FM on an 80m SSB radio - it also did not work.
Just a test to confirm - you must use the VARA FM modem with a 2m FM radio.
?
?
If you wanted to scan both HF ssb frequencies and VHF/UHF FM frequencies - you have a problem.
I’m sure the VARA programmers have a more thorough answer.
?
de k3eui. barry. Phila PA
?
?
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Re: Vara HF - adjusting ALC on FT-891
As others pointed out, there is a drive level right next to the Tune button. But just for future reference, Windows has a volume control that applies to individual apps. This allows you to adjust specific apps for specific volumes without messing with the master volume. And some apps such as WSJT-X (and its various versions), JS8Call, MMSSTV, all have built-in drive level control that are isolated just to that app. And many of those apps retain the drive level per band. Very handy.
?
Doug / N3JXB
?
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Re: Vara HF - adjusting ALC on FT-891
On that screen where you press TUNE there is a slider called DRIVE LEVEL!? Slide to the left to reduce drive which will reduce ALC.? Sliding to the right increases drive which increases ALC.
?
de WA3FIY??Lee?
?
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------ Original Message ------
Sent: 9/12/2024 4:44:22 PM
Subject: [VARA-MODEM] Vara HF - adjusting ALC on FT-891
?
I know this must be very obvious, but I cannot find the answer.? I have my FT-891 setup through a digirig to Winlink Express running Vara HF.
?
When I press the Tune in Vara, the ALC is very high.? How do I reduce the ALC on the FT-891???
?
I have tried the RF control, and that does nothing.? in the FT-891 io group it says in USB mode (I am using USB-digital) to reduce the mic gain.? That is no help either.
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Re: Vara HF - adjusting ALC on FT-891
Thanks guys,
?
I cannot believe that I missed the obvious!? Adjust the drive level right next to the tune button!? Geez I've been at the computer interfacing too many programs to my FT-891.
?
73,
?
Terry
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Re: Vara HF - adjusting ALC on FT-891
Lots of places to adjust transmit out level.? But probably the best place so that it does not upset any other programs digital level in on the Vara HF modem program.??
Go to <settings><Soundcard> Hit the tune button and adjust the slider.?
That should adjust the level of the audio from the computer to the radio.
Peter WA7MOX
?
Sent from for Windows
?
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I know this must be very obvious, but I cannot find the answer.? I have my FT-891 setup through a digirig to Winlink Express running Vara HF.
?
When I press the Tune in Vara, the ALC is very high.? How do I reduce the ALC on the FT-891???
?
I have tried the RF control, and that does nothing.? in the FT-891 io group it says in USB mode (I am using USB-digital) to reduce the mic gain.? That is no help either.
|
Howard
Lloyd KO4L
NOEL MORTIER W9NMM
Luis Morales
Grant Rostig KI5VLA
NR4U
k3eui barry