Re: [digitalradio] Re: 141A ALE FAE mode

[Patrick Lindecker]

Rick,

>If the sound card does vary from the ideal, doesn't the correction bring it to 
>the correct point? As long as it is within 
>the required + and minus of 200 or so?
Yes the TX and the RX are corrected so as they seem to be normalized at the 
nominal speed of 11025 samples/sec.
However, better is to not have to correct at all (it's a feeling). 

>running Vista and the numbers are almost exactly the right ones. In 
It is based on the PC cristal frequency. The difference between 2 cristals must 
not pass 0.05% .

>I actually have a Soundblaster Live! card that is not being used, and 
>maybe I can figure out how to get it to work with my emachine.
Surely it is worth to test it.

73
Patrick




  - Original Message - 
  From: Rick 
  To: digitalradio@yahoogroups.com 
  Sent: Saturday, July 14, 2007 9:23 PM
  Subject: Re: [digitalradio] Re: 141A ALE FAE mode


  If the sound card does vary from the ideal, doesn't the correction bring 
  it to the correct point? As long as it is within the required + and 
  minus of 200 or so?

  By the way, I checked the sound card in my newer HP Computer that is 
  running Vista and the numbers are almost exactly the right ones. In 
  fact, on one test the number was 11025 for the sound card sampling rate. 
  I may have to try out this machine again for my ham activities. 
  Normally, I use a 2.93 GHz emachines computer running XP for that 
  purpose, but as you note, it does have a mediocre built-in sound card.

  I actually have a Soundblaster Live! card that is not being used, and 
  maybe I can figure out how to get it to work with my emachine.

  73,

  Rick, KV9U

  Patrick Lindecker wrote:
  > Hello Rick,
  > 
  > >MFSK16 which requires even more accuracy I think I read in the help 
  > files, 4 Hz
  > Yes (and MFSK8: 2 Hz...which becomes a problem). However you can use 
  > the 2 vertical traces in the waterfall displayed at the beginning of 
  > each MFSK16 transmission. Simply make coincide these two traces with 
  > the two vertical fix lines and it will be OK. A RS ID solve also the 
  > problem, as there is an automatic tuning.
  > 
  > >On thing that would help us is some kind of measurement to tell us when
  > >we are locked on the phase/frequency OK, similar to the way the earlier
  > >programs displayed the graphic phase meter on screen when we operated
  > >PSK31.
  > It will be theoritically possible by measuring the difference of phase 
  > (after some time as it is MFSK and not BPSK) between the selected 
  > carrier and the carrier received but I'm not sure it will be very 
  > reliable and surely not on weak signal.
  > 
  > >By the way, once you do the calibration, is there any way to know that
  > >it was done, other than it indicating the offset that it detected?
  > >For example, my sound card shows still shows 11101 and 76 Hz offset and
  > >does not vary much from that when I run the test each time.
  > I'll see this.
  > Rick: your sound card is rather not very good...Corrections will apply 
  > but with an old Creative Labs or equivalent, you will be more confident.
  > 
  > 73
  > Patrick
  > 
  > 
  > 


   

Re: [digitalradio] Re: 141A ALE FAE mode

[Rick]

If the sound card does vary from the ideal, doesn't the correction bring 
it to the correct point? As long as it is within the required + and 
minus of 200 or so?

By the way, I checked the sound card in my newer HP Computer that is 
running Vista and the numbers are almost exactly the right ones. In 
fact, on one test the number was 11025 for the sound card sampling rate. 
I may have to try out this machine again for my ham activities. 
Normally, I use a 2.93 GHz emachines computer running XP for that 
purpose, but as you note, it does have a mediocre built-in sound card.

I actually have a Soundblaster Live! card that is not being used, and 
maybe I can figure out how to get it to work with my emachine.

73,

Rick, KV9U


Patrick Lindecker wrote:
> Hello Rick,
>  
> >MFSK16 which requires even more accuracy I think I read in the help 
> files, 4 Hz
> Yes (and MFSK8: 2 Hz...which becomes a problem). However you can use 
> the 2 vertical traces in the waterfall displayed at the beginning of 
> each MFSK16 transmission. Simply make coincide these two traces with 
> the two vertical fix lines and it will be OK. A RS ID solve also the 
> problem, as there is an automatic tuning.
>  
> >On thing that would help us is some kind of measurement to tell us when
> >we are locked on the phase/frequency OK, similar to the way the earlier
> >programs displayed the graphic phase meter on screen when we operated
> >PSK31.
> It will be theoritically possible by measuring the difference of phase 
> (after some time as it is MFSK and not BPSK) between the selected 
> carrier and the carrier received but I'm not sure it will be very 
> reliable and surely not on weak signal.
>  
> >By the way, once you do the calibration, is there any way to know that
> >it was done, other than it indicating the offset that it detected?
> >For example, my sound card shows still shows 11101 and 76 Hz offset and
> >does not vary much from that when I run the test each time.
> I'll see this.
> Rick: your sound card is rather not very good...Corrections will apply 
> but with an old Creative Labs or equivalent,  you will be more confident.
>  
> 73
> Patrick
>  
>  
>  

Re: [digitalradio] Re: 141A ALE FAE mode

[Patrick Lindecker]

Hello Rick,

>MFSK16 which requires even more accuracy I think I read in the help files, 4 Hz
Yes (and MFSK8: 2 Hz...which becomes a problem). However you can use the 2 
vertical traces in the waterfall displayed at the beginning of each MFSK16 
transmission. Simply make coincide these two traces with the two vertical fix 
lines and it will be OK. A RS ID solve also the problem, as there is an 
automatic tuning.

>On thing that would help us is some kind of measurement to tell us when 
>we are locked on the phase/frequency OK, similar to the way the earlier 
>programs displayed the graphic phase meter on screen when we operated 
>PSK31.
It will be theoritically possible by measuring the difference of phase (after 
some time as it is MFSK and not BPSK) between the selected carrier and the 
carrier received but I'm not sure it will be very reliable and surely not on 
weak signal.

>By the way, once you do the calibration, is there any way to know that 
>it was done, other than it indicating the offset that it detected?
>For example, my sound card shows still shows 11101 and 76 Hz offset and 
>does not vary much from that when I run the test each time.
I'll see this.
Rick: your sound card is rather not very good...Corrections will apply but with 
an old Creative Labs or equivalent,  you will be more confident.

73
Patrick





  - Original Message - 
  From: Rick 
  To: digitalradio@yahoogroups.com 
  Sent: Saturday, July 14, 2007 1:23 AM
  Subject: Re: [digitalradio] Re: 141A ALE FAE mode


  Thanks for the suggestions. I will double check with the other ham on 
  the sound card calibration. We had to do this a while back as we were 
  having difficulty with MFSK16 which requires even more accuracy I think 
  I read in the help files, 4 Hz!

  On thing that would help us is some kind of measurement to tell us when 
  we are locked on the phase/frequency OK, similar to the way the earlier 
  programs displayed the graphic phase meter on screen when we operated 
  PSK31.

  By the way, once you do the calibration, is there any way to know that 
  it was done, other than it indicating the offset that it detected?
  For example, my sound card shows still shows 11101 and 76 Hz offset and 
  does not vary much from that when I run the test each time.

  On other thing. Has anyone running ICOM"s with the CI-V had any problem 
  with the rig not turning off transmit sometimes? This seems to happen 
  with my 756 Pro 2 every so often.

  73,

  Rick, KV9U

  Patrick Lindecker wrote:
  > Hello Rick,
  > 
  > Yes, I confirm, you must:
  > 
  > * calibrate Multipsk with the sound card installed: click on "Sampling 
  > freq." then click on "Determination of the standard RX sampling 
  > frequency..." and "Determination of the standard TX sampling 
  > frequency...". It is automatic.
  > 
  > * Let the AF frequency fixed for ALE (open the "Options" window) 
  > and be sure of the HF frequency (in ALE you can accomodate +/- 15 Hz, 
  > no more).
  > 
  > You can start with sending AMD messages through the "Aux. functions" 
  > window. Then try to send FAE APRS position. Afterwards, try General 
  > call in ARQ FAE (button "ARQ FAE" then "Call", the other Ham must 
  > push the buttons "ARQ FAE" and "Answer").
  > 
  > 73
  > Patrick
  > 
  > - Original Message -
  >
  > *From:* expeditionradio 
  > *To:* digitalradio@yahoogroups.com
  > 
  > *Sent:* Friday, July 13, 2007 8:23 PM
  > *Subject:* [digitalradio] Re: 141A ALE FAE mode
  >
  >
  > >
  > > Any idea on what was causing this? Any settings we need to tweak?
  > >
  > > 73,
  > >
  > > Rick, KV9U
  > >
  >
  > Make sure your soundcard is calibrated using the provided sampling
  > method in Multipsk. This is the number 1 problem we see with it.
  >
  > Also, be sure of your frequency calibration of your transceiver.
  >
  > Bonnie KQ6XA
  >
  > 
  > --
  >
  > No virus found in this incoming message.
  > Checked by AVG Free Edition. 
  > Version: 7.5.476 / Virus Database: 269.10.4/898 - Release Date: 7/12/2007 
4:08 PM
  > 


   

[digitalradio] Meteor Random QSO Hour,13:00 - 15:00 UTC, Weekly

[Mark Thompson]

Random QSO Hour" 13:00 - 15:00 UTC Meteor Scatter
Saturday July 14, 2007

(This event repeats every week.)
Location: http://www.ykc.com/wa5ufh/

Notes:
RANDOM HOUR “Activity Period”

Call CQ’s on:
Freq: 144.140 MHz & 50.260 MHz 
Two meters RH 13:00 – 14:00 UTC FSK441A 
Six meters RH 14:00 – 15:00 UTC FSK441A

Options: Complete QSO on Call Freq or Call using Up | Dn method
Random QSO’s count toward RQA (Random QSO Award)

More information: 
http://www.ykc.com/wa5ufh/

Reports to Bruce … [EMAIL PROTECTED] 
Sponsor: The WSJTGROUP


 

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[digitalradio] Re: ethernet or wireless

[lazysenior]

--- In digitalradio@yahoogroups.com, "Paul" <[EMAIL PROTECTED]> wrote:
>
> I can either use CAT 5 wire - about 20-25 feet long - to connect my
> Ham computer to the internet, or I can turn on the wireless feature
> of my router and connect via the slower wireless portal. Speed won't
> be an issue - until I try computer control.
> 
> Will running the long ethenet cable behind my rigs cause more or less
> problem than going wireless?
> 
> Thank you and 73,
> 
> Paul
>

Go wireless. The speed wont be an issue as your wireless connection
will be MUCH faster than your internet connection.

Also consider this:

Last year a tree in my yard got hit by lightning. It went into the
ground and got my telephone line. Followed the telephone line to the
dsl modem and thru the ethernet connection to my computer. Bye Bye
computer. Now I use wireless so there is NO connection to my computer.
I also now DISCONNECT the telephone line from modem when storms are in
area.

Stan k9IUQ 

Re: [digitalradio] ethernet or wireless

[Rein Couperus]

We have excellent experience with using wireless, even in high power 
multi/multi setups. You will get less noise.
2/5/11 MB speed is more than enough for computer control...

73,

Rein PA0R (TS7N, CT9L, 5A7A)


> -Ursprüngliche Nachricht-
> Von: digitalradio@yahoogroups.com
> Gesendet: 14.07.07 11:30:42
> An: digitalradio@yahoogroups.com
> Betreff: [digitalradio] ethernet or wireless


>  
>  
>  
> 
> I can either use CAT 5 wire - about 20-25 feet long - to connect my
> Ham computer to the internet, or I can turn on the wireless feature
> of my router and connect via the slower wireless portal. Speed won't
> be an issue - until I try computer control.
> 
> Will running the long ethenet cable behind my rigs cause more or less
> problem than going wireless?
> 
> Thank you and 73,
> 
> Paul
> 
>   
>  
> 

-- 
http://pa0r.blogspirit.com


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Re: [digitalradio] ethernet or wireless

[Andrew O'Brien]

The only "problems " I experience ,other than speed,  are the router
occasionally freezing up and needing a power off/power on fix.

Andy K3UK

On 7/14/07, Paul <[EMAIL PROTECTED]> wrote:


  I can either use CAT 5 wire - about 20-25 feet long - to connect my
Ham computer to the internet, or I can turn on the wireless feature
of my router and connect via the slower wireless portal. Speed won't
be an issue - until I try computer control.

Will running the long ethenet cable behind my rigs cause more or less
problem than going wireless?

Thank you and 73,

Paul

 

[digitalradio] ethernet or wireless

[Paul]

I can either use CAT 5 wire - about 20-25 feet long - to connect my
Ham computer to the internet, or I can turn on the wireless feature
of my router and connect via the slower wireless portal. Speed won't
be an issue - until I try computer control.

Will running the long ethenet cable behind my rigs cause more or less
problem than going wireless?

Thank you and 73,

Paul