Re: [digitalradio] Fw: [illinoisdigitalham] Will You Let FCC Kill Digital Radio Technology?

2007-12-27 Thread Phil Barnett 
On Thursday 27 December 2007 04:35:11 pm David Struebel wrote:

> especially during contests... Traffic thru put declines severely during
> these contests.

And this is as it should be. During heavy use, bandwidth is a limited 
resource. And if you have decent busy detectors and you detect that the 
frequency is in use, then you were not there first. This is not a new 
concept.

If you are looking for guarantees, there are commercial solutions.

Thank you for using the automatic segment and busy detectors.

[digitalradio] Fw: [illinoisdigitalham] Will You Let FCC Kill Digital Radio Technology?

2007-12-27 Thread David Struebel 

- Original Message - 
From: David Struebel 
To: [EMAIL PROTECTED] 
Sent: Thursday, December 27, 2007 4:33 PM
Subject: Re: [illinoisdigitalham] Will You Let FCC Kill Digital Radio 
Technology?


Hi Everyone,

I've been following this debate for the past several days and finally have to 
add my two cents.

I'm part of NTSD, that's the National Traffic System Digital...We mostly use 
the old version of Winlink (before Winlink 2000) also reffered to as "Winlink 
Classic" running
Pactor I II and sometimes III... We used to use AMTOR and Clover but have all 
changed over to Pactor... Many of us are still using PK-232MBX's for Pactor I, 
others are using SCS TNC's All our connects occur in the automatic band 
segments... Winlink Classic has a very good "busy detector" in it... I've seen 
it work on not only Pactor, AMTOR, and Clover signals but other including RTTY, 
dead carriers etc...
Winlink classic when it hears another signal, postpones the connect and then 
tries 15 minutes later for a total of three attempts at a clear frequency.
I can tell you that with an active busy detector, our systems are almost 
helpless against RTTY signals that come into the automatic band segments 
especially during contests... Traffic thru put declines severely during these 
contests.

We're happy with staying within the automatic band segments with our 500 Hz 
Pactor I and Pactor II signals... It would be nice if others realized that the 
automatic segments do contain stations with "busy detector" armed and ready and 
please refrain from casual operation there, especially during a contest.

I know I'm going to get a lot of flack from those of you that don't like 
automatic stations, but like I said Winlink 2000 is  not the only Pactor 
operation around running automatically... We prefer to stay in the automatic 
band segments... Please have the common courtesy to respect our operations.

Dave WB2FTX
Eastern Area Digital Coordinator- NTS Digital
Section Traffic Manager- Northern NJ


  - Original Message - 
  From: Rick 
  To: [EMAIL PROTECTED] 
  Sent: Thursday, December 27, 2007 4:10 PM
  Subject: Re: [illinoisdigitalham] Will You Let FCC Kill Digital Radio 
Technology?


  Packet?

  This does not have much to do with the subject though.

  John Becker, WØJAB wrote:
  > Rick you of all people should know that one of the older systems
  > had a " auto-detect " or " busy detection " that worked very good.
  >
  > 



   


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