Re: [digitalradio] RTTY question

2008-03-29 Thread Patrick Lindecker 
Hello Mark,

On the Mixw program, for RTTY 45 bauds, it is reversed internally, to keep 
compatible with traditional RTTY which is transmitted in LSB, if you are in 
USB. Multipsk does the same.
So with these softs, you must stay in USB for all digimodes (including RTTY 45 
bauds) and all bands, this to simplify the operations.

73
Patrick

 

  - Original Message - 
  From: Mark Miller 
  To: digitalradio@yahoogroups.com 
  Sent: Saturday, March 29, 2008 7:00 PM
  Subject: Re: [digitalradio] RTTY question


  At 08:36 PM 3/28/2008, you wrote:

  >Why do I find so so many RTTY signals up side down
  >on the ham bands.

  I think it is because many of the sound card programs give you mark 
  high and space low when the rig is using USB. A newbie asks which 
  sideband to use and someone invariably says LSB. USB/LSB depends on 
  which software package that you use and its defaults. I use MixW and 
  to get mark high space low you using the defaults with AFSK, the rig 
  should be set to USB.

  I don't think many inexperienced operators actually check to see what 
  RF frequencies they are actually transmitting.

  73,
  Mark N5RFX

Re: [digitalradio] RTTY question

2008-03-29 Thread Mark Miller 
At 08:36 PM 3/28/2008, you wrote:

>Why do I find so so many RTTY signals up side down
>on the ham bands.

I think it is because many of the sound card programs give you mark 
high and space low when the rig is using USB.  A newbie asks which 
sideband to use and someone invariably says LSB.  USB/LSB depends on 
which software package that you use and its defaults.  I use MixW and 
to get mark high space low you using the defaults with AFSK, the rig 
should be set to USB.

I don't think many inexperienced operators actually check to see what 
RF frequencies they are actually transmitting.

73,
Mark N5RFX

Re: [digitalradio] RTTY question

2008-03-29 Thread Jose A. Amador 
Mike Blazek wrote:
> 
> 
> John Becker, WØJAB wrote:
>  >
>  > Why do I find so so many RTTY signals up side down
>  > on the ham bands.
>  >
>  > What ever happen to the old standard?
>  >
>  > Mark is hi space is low.
>  >
>  > John, W0JAB
>  >
> 
> Hi, John:
> 
> I think the main reason is pretty much all of the other digital modes
> use USB regardless of band.
> 
> 73,
> Mike N5UKZ

Many modes are insensitive to which sideband is used, which makes 
possible mistakes inconsequential (packet, pactor I/II, PSK31...)

Some people may also not be fully aware that all modes are not created 
or used equally.

73,

Jose, CO2JA

Re: [digitalradio] RTTY question

2008-03-28 Thread Mike Blazek 
John Becker, WØJAB wrote:
>
> Why do I find so so many RTTY signals up side down
> on the ham bands.
>
> What ever happen to the old standard?
>
> Mark is hi space is low.
>
> John, W0JAB
>








Hi, John:

I think the main reason is pretty much all of the other digital modes 
use USB regardless of band.

73,
Mike N5UKZ
>
>  
>
>
>

[digitalradio] RTTY question

2008-03-28 Thread John Becker, WØJAB 
Why do I find so so many RTTY signals up side down
on the ham bands.

What ever happen to the old standard?

Mark is hi space is low.


John, W0JAB