[RTTY] Fun, but

W5CPT w5cpt at bellsouth.net
Sun Mar 1 13:32:07 PST 2009


I may be the only one who doesn't know which Manufacturer and Model you are speaking of, but probably not, so which radio is the subject of this conversation?

Clint - W5CPT

<lots of snips>
  ----- Original Message ----- 
  From: Joe Subich, W4TV 
  To: 'Kok Chen' ; 'RTTY Reflector' 
  Sent: Sunday, March 01, 2009 3:14 PM
  Subject: Re: [RTTY] Fun, but

  > No, that transmit bandpass filter had only addressed the 
  > symptom, not the cause, Joe.  As a result, as a few people 
  > have reported after installing the Feb 9 Beta firmware, 
  > certain settings still caused the envelope glitches.

  It addressed some but not all of the causes.  The current 
  alpha - which I do have - seems to have addressed the root 
  cause.  However, the bandpass filter may still be of value 
  for some of the lousy AFSK generators out there. 

  > To: RTTY Reflector
  > Cc: Joe Subich, W4TV
  > Subject: Re: [RTTY] Fun, but
  > 
  > On Mar 1, 2009, at 11:32 AM, Joe Subich, W4TV wrote:
  > 
  > > The issue is with AFSK not FSK.  The first fix was released in the 
  > > pubic beta software (MCU 2.82/DSP 2.00) dated 9 Feb 2009 
  > and includes 
  > > a transmit BPF (CONFIG:AFSK TX).
  > 
  > 
  > Take a careful look at the early notes that came with the Alpha  
  > firmware (the latest alpha came out on February 26) which Wayne had  
  > sent as email to a couple of people (you and I included).
  > 
  > One alpha tester whose problem the Feb 9 Beta did not cure, has  
  > reported that the latest Alpha is no longer producing audible  
  > keyclicks.  So, there is hope that the root cause, and not the  
  > symptom, is finally addressed.  This why I used "[[ currently ]]" in  
  > my earlier posting, and specially placed emphasis on the word.
  > 
  > We are addressing overly broad RTTY signals here, not loud RTTY  
  > signals.  You cannot prevent your transmitted signal from being loud  
  > to another ham.  But you can avoid being unnecessarily broad.
  > 
  > 73
  > Chen, W7AY


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