[OZAPRS] VK3 APRS News - VoiceAlert changes

[Richard Hoskin]

Gday Bob,

> > The voice repeater access tone change was to align
> 
> I hope that such a change is universal throughout the
> Continent, otherwise passing travelers may not hear
> Each other.  Also, with the UNIVERSALITY of the internet
> PLEASE indicate the CONTINENT in every mention of
> Voice Alert anywhere that it may appear.  The web
> Page below may be read by someone in the USA and be
> Confused at the change from our universal CTCSS 100.
 
As far as I'm aware the CTCSS change is standard throughout the at least
the
Eastern part of the content. I'll add the continent to the web page etc.


> > The APRS VoiceAlert guide states that that the VoiceAlert
> > CTCSS tone should be the same as the voice repeater
> > access tone to allow  non-APRS enabled
> > radios to use VoiceAlert.
> 
> The above statement makes no sense in the USA.  Every repeater
> Has a difference CTCSS since that is the whole purpose of
> CTCSS.  I infer from the above that all repeaters in VK
> Land all use the same tone.  That is a very uniqe situation
> And should be reflected by referring to the unique continent
> On which it applies.

Most of the repeaters here have no tone access. In the past CTCSS was only
used for repeater linking. A single tone of 123Hz was chosen as the
defacto
standard so people with ex-commercial radios with single tone tone boards
could access all the links. Now due the recent increase in the popularity
of
commercial radio our repeaters are experiencing RF interference that is
hard
to remove without the use of CTCSS. It was found that in a few instances
the
123Hz tone was not blocking the interference so the tone was changed. (I
think this was done in consultation with the states an the Wireless
Institute of Australia)

Changing the tone for APRS will allow the users of APRS with ex-commercial
radios to use both the repeaters and APRS voice alert.

Cheers
Richard
VK3JFK


_______________________________________________
Ozaprs mailing list
Ozaprs at aprs.net.au
http://aprs.net.au/mailman/listinfo/ozaprs
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://second.aprs.net.au/pipermail/ozaprs/attachments/20060930/14ba33f5/attachment.htm