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| Date: | Tue, 3 May 2005 13:36:39 -0400 |
| Content-Type: | TEXT/PLAIN |
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In my area so far I have just heard a transportation service, but nothing
else. Since I don't use this service I don't see it as being something
worth spending the money on to trunktrack it. I think that there are
other users, but I was really surprised to find something on VHF and a
trunking system using SSB.
On Tue, 3 May 2005, Colin McDonald wrote:
> it would probably be for very wide coverage, like regional within 60 or 70
> miles on ssb i would think.
> Be interesting to see who is using it and find out a little more about why
> they chose such an unusual system for their communications.
> 73
> Colin, V A6bkx
> ----- Original Message -----
> From: "Jeff Kenyon" <[log in to unmask]>
> To: <[log in to unmask]>
> Sent: Tuesday, May 03, 2005 11:10 AM
> Subject: Re: 220 ssb system
>
>
> > Hi Collin and the rest of the group. This I think is to tune the radio to
> > the signal, but I guess to the user it sounds like standard FM, but I can
> > tell you that from what I've been able to gather from monitoring with my
> > THF6A this system in my area isn't for in-building coverage at all.
> >
> >
> >
> >
> >
> > On Tue, 3 May 2005, Colin McDonald wrote:
> >
> > > This is a multi-part message in MIME format.
> > >
> > > ------=_NextPart_000_01A0_01C54FCF.BCD11210
> > > Content-Type: text/plain;
> > > charset="iso-8859-1"
> > > Content-Transfer-Encoding: quoted-printable
> > >
> > > the tone could very well be a dcss tone or something similar...perhaps a
> > > ctcss tone to key the bass radio or what ever other portible station =
> > > they
> > > are talking with.
> > > What sort of agency uses this system?
> > > I would think they probably dont utilize repeaters on ssb? or what ever
> =
> > > form
> > > of it this is?
> > > If so, then just like on fm they might be using a continuous tone to key
> =
> > > the
> > > repeater or to send some sort of radio identification to the control
> > > station.
> > > Might also be a fault with the type of radios they are using or =
> > > something to
> > > do with the environments they are transmitting from.
> > >
> > > 73
> > > Colin, V A6BKX
> > > ------=_NextPart_000_01A0_01C54FCF.BCD11210
> > > Content-Type: text/html;
> > > charset="iso-8859-1"
> > > Content-Transfer-Encoding: quoted-printable
> > >
> > > <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
> > > <HTML><HEAD>
> > > <META http-equiv=3DContent-Type content=3D"text/html; =
> > > charset=3Diso-8859-1">
> > > <META content=3D"MSHTML 6.00.2800.1476" name=3DGENERATOR>
> > > <STYLE></STYLE>
> > > </HEAD>
> > > <BODY bgColor=3D#ffffff><FONT face=3DArial size=3D2>
> > > <DIV>the tone could very well be a dcss tone or something =
> > > similar...perhaps=20
> > > a<BR>ctcss tone to key the bass radio or what ever other portible =
> > > station=20
> > > they<BR>are talking with.<BR>What sort of agency uses this system?<BR>I
> =
> > > would=20
> > > think they probably dont utilize repeaters on ssb? or what ever =
> > > form<BR>of it=20
> > > this is?<BR>If so, then just like on fm they might be using a continuous
> =
> > > tone to=20
> > > key the<BR>repeater or to send some sort of radio identification to
> the=20
> > > control<BR>station.<BR>Might also be a fault with the type of radios =
> > > they are=20
> > > using or something to<BR>do with the environments they are
> transmitting=20
> > > from.</DIV>
> > > <DIV> </DIV>
> > > <DIV>73<BR>Colin, V A6BKX</FONT></DIV></BODY></HTML>
> > >
> > > ------=_NextPart_000_01A0_01C54FCF.BCD11210--
> > >
> >
>
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