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CX2SA > SATDIG 10.01.14 21:02l 99 Lines 2626 Bytes #999 (0) @ WW
BID : AMSATBB910
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Subj: AMSAT-BB-digest V9 10
Path: IZ3LSV<IW0QNL<ON4HU<CX2ACB<CX2SA
Sent: 140110/2001Z @:CX2SA.SAL.URY.SA #:2465 [Salto] FBB7.00e $:AMSATBB910
From: CX2SA@CX2SA.SAL.URY.SA
To : SATDIG@WW
Today's Topics:
1. DTMF on HF? (Robert Bruninga)
2. Re: DTMF on HF? (Kevin Muenzler, WB5RUE)
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Message: 1
Date: Fri, 10 Jan 2014 12:10:15 -0500
From: Robert Bruninga <bruninga@xxxx.xxx>
To: aprssig@xxxx.xxx
Cc: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] DTMF on HF?
Message-ID: <de07dffbf04879070188eec11c21687c@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1
Has anyone had any experience with any success at DTMF working on HF for
some rudimentary commands?
I know tuning is critical as well as inter-tone noise must be way down.
Just thought maybe someone has experimented with it.
Bob, WB4aPR
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Message: 2
Date: Fri, 10 Jan 2014 13:28:47 -0600
From: "Kevin Muenzler, WB5RUE" <kevin@xxxxxxxxxxxxxxxxxxxxx.xxx>
To: "'Robert Bruninga'" <bruninga@xxxx.xxx>, <aprssig@xxxx.xxx>
Cc: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] Re: DTMF on HF?
Message-ID: <011701cf0e3a$2f575ba0$8e0612e0$@xxx>
Content-Type: text/plain; charset="us-ascii"
I doubt that it would be useful because the tolerances are extremely high in
DTMF so if you are only a few Hz off the tones won't lock. FM might be ok
but certainly not SSB. FM itself has its own problems on HF so that might
not be useable either.
Kevin Muenzler, WB5RUE
Grid-EL09uf
Eagle Creek Observatory
http://www.eaglecreekobservatory.org
I'd be unstoppable if it weren't for law enforcement and physics
-----Original Message-----
From: amsat-bb-bounces@xxxxx.xxx [mailto:amsat-bb-bounces@xxxxx.xxxx On
Behalf Of Robert Bruninga
Sent: Friday, January 10, 2014 11:10 AM
To: aprssig@xxxx.xxx
Cc: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] DTMF on HF?
Has anyone had any experience with any success at DTMF working on HF for
some rudimentary commands?
I know tuning is critical as well as inter-tone noise must be way down.
Just thought maybe someone has experimented with it.
Bob, WB4aPR
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End of AMSAT-BB Digest, Vol 9, Issue 10
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