[RTTY] A Wikipedia quote.

[Jack West]

During my Commodore-64 days in 1988, I used to enjoy running 75 baud 100wpm RTTY
sending and receiving those long RTTY pictures. Some of thsoe were clevererly 
done.
I miss exchanging  RTTY pix. Does anyone still do the picture print outs?

73 de
Jack / W7LD / "Lucky Dog"

----- Original Message ----- 
From: "Kok Chen" <chen at mac.com>
To: "RTTY Reflector" <RTTY at contesting.com>
Sent: Thursday, January 28, 2010 11:51 PM
Subject: [RTTY] A Wikipedia quote.


> While searching for references to ASCII radioteletype, I found this quote at 
> http://en.wikipedia.org/wiki/Radioteletype :
>
>> On January 7, 1972, the FCC amended Part 97 to allow faster RTTY speeds. Four 
>> standard RTTY speeds were authorized, namely, 60 (45 baud), 67 (50 baud), 75 
>> (56.25 baud) and 100 (75 baud) words per minute. Many Amateur Radio operators 
>> had equipment that was capable of being upgraded to 75 and 100 words per minute 
>> by changing teleprinter gears. While there was an initial interest in 100 words 
>> per minute operation, many Amateur Radio operators moved back to 60 words per 
>> minute. Some of the reasons for the failure of 100 words per minute HF RTTY 
>> included poor operation of improperly maintained mechanical teleprinters, 
>> narrow bandwidth terminal units, continued use of 170 Hz shift at 100 words per 
>> minute and excessive error rates due to multipath distortion and the nature of 
>> ionospheric propagation.
>
> I found the last sentence interesting :-).  Notice also the comment on "narrow 
> bandwidth TU."  Be sure to open up the filter bandwidths if you try 110 baud 
> ASCII and not fall into the same trap.
>
> 73
> Chen, W7AY
>
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