Derek Whitten
2005-Sep-13 07:01 UTC
[Re: [Asterisk-Users] civil emergency comms: Asterisk + HAM]]
-----Forwarded Message----- From: IEG <dennis.andring@gmail.com> To: derek@kfuq.net Subject: Re: [Fwd: Re: [Asterisk-Users] civil emergency comms: Asterisk + HAM] Date: Tue, 13 Sep 2005 03:04:42 -0700 The answer is a multiplexed terminal node controller (TNC) This was the very thought behind "trunked" communications around 800mhz. Gee ... there are a bunch of cell phone frequencies just above that and 3x800 2.4g and .... I'll leave the possibilities to the imaginative reader On 9/9/05, Derek Whitten <derek@kfuq.net> wrote: -----Forwarded Message----- From: Mike M <no-linux-support@earthlink.net> To: asterisk-users@lists.digium.com Subject: Re: [Asterisk-Users] civil emergency comms: Asterisk + HAM Date: Fri, 09 Sep 2005 10:26:09 -0400 On Fri, Sep 09, 2005 at 01:46:57PM +0100, Peter Bowyer wrote: > On 09/09/05, Mike M <no-linux-support@earthlink.net> wrote: > > On Thu, Sep 08, 2005 at 07:28:34PM +0000, Mike Hemstock wrote: > > > On Tuesday 06 September 2005 15:27, Mike M wrote: > > > > > > > > Imagine what a network of systems composed of Asterisk, ham radio, wifi, > > > > generators, batteries, and a reserve of fuel could have done for the > > > > Gulf coast. I have all of the components above except the ham radio. > > > > > > That's a very interesting idea. > > > > I've initiated a request to join my local amateur radio yahoo group. > > I'm going to see if I can enlist help to demonstrate this idea. > > The concept of combining VoIP and ham radio is by no means new - there > are many skype-a-like systems around which are used as links or user > access to the existing ham repeater network. I don't know of any using > Asterisk, though. I think this architecture has value: PSTN---asterisk---voip---radio===+==radio--voip--asterisk---POTS +==radio--voip--asterisk---POTS +==radio--voip--asterisk---POTS and this too: voip svc prvdr----voip---radio===+==radio--voip--asterisk---POTS +==radio--voip--asterisk---POTS +==radio--voip--asterisk---POTS POTS at the emergency end is good because it's familiar, simple, cheap, and runs on a central power source. I don't know radio equipment so I don't know if the upstream radio can multiplex streams onto different frequencies. -- -----BEGIN GEEK CODE BLOCK----- Version: 3.1 GCS/GIT> d-@ s+:+ a? C+++ BLHIS$ U+++ P+> L+++ !E W+++$ N++ o+ K w-- PS+++ PE@ Y+ PGP++ t 5? X !R tv+ b- DI-- D G e+> h---- r+++ y++++ ------END GEEK CODE BLOCK------ -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.6 (GNU/Linux) iD8DBQBDIZwUzGZD3alCWIARAtiBAJ0X2WpPhVS8mI2mJwDek8z9FARjlgCgtIm2 NP7oXinBi3TteYRpKT1O4n0 =JbTB -----END PGP SIGNATURE----- -- -----BEGIN GEEK CODE BLOCK----- Version: 3.1 GCS/GIT> d-@ s+:+ a? C+++ BLHIS$ U+++ P+> L+++ !E W+++$ N++ o+ K w-- PS+++ PE@ Y+ PGP++ t 5? X !R tv+ b- DI-- D G e+> h---- r+++ y++++ ------END GEEK CODE BLOCK------ -------------- next part -------------- A non-text attachment was scrubbed... Name: not available Type: application/pgp-signature Size: 189 bytes Desc: This is a digitally signed message part Url : http://lists.digium.com/pipermail/asterisk-users/attachments/20050913/f5c1eda5/attachment.pgp
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