[GreenKeys] Updated news feeds

[Dale Hughes]

Hi Harold,

Many thanks for the update and I have tried the NPR and CNN HTTP  access
and it works fine with my demodulator and M28 TTY.

Regards
Dale VK1DSH


On Wed, 7 Oct 2026 at 09:39, Harold Hallikainen via GreenKeys <
greenkeys at mailman.qth.net> wrote:

> Thanks to K8WXQ, I've found that not all UARTS will accept 1.0 stop bits.
> I THOUGHT that setting the number of stop bits to 1.5 only affect the
> transmit side and that, for example, a UART receiving 60 wpm would sample
> the stop bit 22 ms after the sampling of the last data bit, and then go
> into the idle condition. This appears to be how electromechanical
> Teletypes work, but apparently not the UART in the AEA PK232. On SOME of
> my feeds, I had only been sending 1.0 stop bits. I have changed them all
> to 1.5 stop bits (and the new audio files will be generated over the next
> few hours).
>
> To simplify streaming to the DSP TU WiFi module (
> https://w6iwi.org/rtty/DspTU3/ ), I've taken several approaches which
> still maintain compatibility with web browsers. These are:
>
> 1. Audio is sent as 8 bit unsigned PCM with a sample rate of 8 ksps. This
> eliminates the need for an MP3 or other decoder.
>
> 2. I've changed the code that determines which audio file to send (the
> latest). Previously, it sent an HTTP redirect to the browser with the URL
> for the most recent WAV file. But that requires the HTTP client to
> understand a redirect. Now, latest.php finds the latest file and sends it
> directly with no redirect.
>
> 3. While the audio is available encrypted (https), it is also available as
> plaintext (http). This removes the requirement that the web client know
> how to do key exchange and decrypt the audio.
>
> Here are links to players for each of the news feeds:
> https://w6iwi.org/rtty/audio/npr/
> https://w6iwi.org/rtty/audio/csm/
> https://w6iwi.org/rtty/audio/cnn/
>
> Here are links to the latest audio files using https
>
> NPR
> https://w6iwi.org/rtty/audio/npr/audio/60wpm/latest.php
> https://w6iwi.org/rtty/audio/npr/audio/60autostart/latest.php
> https://w6iwi.org/rtty/audio/npr/audio/100wpm/latest.php
> https://w6iwi.org/rtty/audio/npr/audio/100autostart/latest.php
>
> CSM
> https://w6iwi.org/rtty/audio/csm/audio/60wpm/latest.php
> https://w6iwi.org/rtty/audio/csm/audio/60autostart/latest.php
> https://w6iwi.org/rtty/audio/csm/audio/100wpm/latest.php
> https://w6iwi.org/rtty/audio/csm/audio/100autostart/latest.php
>
> CNN
> https://w6iwi.org/rtty/audio/cnn/audio/60wpm/latest.php
> https://w6iwi.org/rtty/audio/cnn/audio/60autostart/latest.php
> https://w6iwi.org/rtty/audio/cnn/audio/100wpm/latest.php
> https://w6iwi.org/rtty/audio/cnn/audio/100autostart/latest.php
>
> Here are links to the latest audio files using http
>
> NPR
> http://plaintext.w6iwi.org/rtty/audio/npr/audio/60wpm/latest.php
> http://plaintext.w6iwi.org/rtty/audio/npr/audio/60autostart/latest.php
> http://plaintext.w6iwi.org/rtty/audio/npr/audio/100wpm/latest.php
> http://plaintext.w6iwi.org/rtty/audio/npr/audio/100autostart/latest.php
>
> CSM
> http://plaintext.w6iwi.org/rtty/audio/csm/audio/60wpm/latest.php
> http://plaintext.w6iwi.org/rtty/audio/csm/audio/60autostart/latest.php
> http://plaintext.w6iwi.org/rtty/audio/csm/audio/100wpm/latest.php
> http://plaintext.w6iwi.org/rtty/audio/csm/audio/100autostart/latest.php
>
> CNN
> http://plaintext.w6iwi.org/rtty/audio/cnn/audio/60wpm/latest.php
> http://plaintext.w6iwi.org/rtty/audio/cnn/audio/60autostart/latest.php
> http://plaintext.w6iwi.org/rtty/audio/cnn/audio/100wpm/latest.php
> http://plaintext.w6iwi.org/rtty/audio/cnn/audio/100autostart/latest.php
>
> As mentioned before, I thought UARTs would accept 1.0 stop bits even when
> configured for 1.5 stop bits. I had a nice AI QSO where it was explained
> how these UARTs did indeed need 1.5 stop bits. It's at
> https://share.google/aimode/KBLmTX7w2kDNuCh8u .
>
> Please let me know of any issues with the feeds.
>
> THANKS!
>
> Harold
> https://w6iwi.org
>
>
>
>
>
>
> --
> Not sent from an iPhone.
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