As long as cw, rtty, and data are allowed on all freqs, it would still be
illegal for them to transmit on top of a known QSO no matter what portion of
the band they are in, including the area where they are only allowed to
transmit. (NOT only they). Thus the need for detection everywhere they
transmit.
Danny Douglas N7DC
ex WN5QMX ET2US WA5UKR ET3USA
SV0WPP VS6DD N7DC/YV5 G5CTB all
DX 2-6 years each
.
QSL LOTW-buro- direct
As courtesy I upload to eQSL but if you
use that - also pls upload to LOTW
or hard card.
moderator [EMAIL PROTECTED]
moderator http://groups.yahoo.com/group/DXandTalk
----- Original Message -----
From: "kv9u" <[EMAIL PROTECTED]>
To: <[email protected]>
Sent: Sunday, March 25, 2007 10:03 AM
Subject: Re: [digitalradio] Re: Report of the ARRL Ad Hoc HF Digital
Committee Dissenting
> Leigh,
>
> Within the automatic sub bands, they would not have to have any
> detection and would still be legal. When the rules were drawn up, the
> technology had not been invented to have busy frequency detection, at
> least not for amateur radio. But that all changed a couple years ago
> when Rick, KN6KB invented the technique.
>
> When they are outside the automatic sub bands, it is my view that they
> must take great care to insure that the automatic station is not
> transmitting over other stations. The one good thing is that the wider
> Pactor 3 mode can not be used automatically when outside the automatic
> area. However, the P2 mode (500 Hz or less) can be used anywhere in the
> text data portions of the bands when sending text data.
>
> One thing that has come to my attention is that Winlink 2000 claims to
> be handling FAX transmission for weather. Does anyone know if this is
> really true? It would definitely not be legal to do this with Pactor 3
> in the text data area under the current rules here in the U.S.. It only
> recently became legal here on the narrow (500 Hz and less) to send
> analog or digital FAX in the text data portions of the bands.
>
> 73,
>
> Rick, KV9U
>
>
> Leigh L Klotz, Jr. wrote:
> > Well, then it's true. They don't care about the law.
> > Leigh/WA5ZNU
> > On Sat, 24 Mar 2007 5:49 pm, kv9u wrote:
> >
> >> The discussion of automatic signal detection and not transmitting on a
> >> busy frequency has been a major item of discussion in the past day on
> >> one of the Winlink 2000 groups and the impression that I got from the
> >> main spokesperson/owner was that if they had to follow busy detection
> >> rules, Winlink 2000 would be impossible to operate.
> >>
> >>
>
>
>
>
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