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Re: Re: TH-D7A (G)



ARG!

As I said Alf, the TH-D7A out of the box transmits from 430 MHz to 450 MHz.
It transmits.  I've used it for 9600 baud packet down at 430.35 MHz.  Since
I've used the radio that low, I should know if it works.

People use it all the time for satellite work.  It works fine.  Perhaps the
receiver specs degrade slightly.  Also, specs can be wrong.  Don't worry
about it.  The radio will work fine.

Why not call Kenwood and ask them?  They should be able to help.

Many times radios are spec'd at one level over a specific range and that is
considered "working."  Over additional ranges the radio works, but things
like sensitivity, dynamic range, etc. are degraded slightly.  Ever notice
the wideband receivers like the VX-1R say "specs guaranteed in ham bands
only."?  Just cause it is off the range of the spec sheet doesn't mean it
won't work.  Spec sheets are generally quite conservative anyhow.

73,

Jon
NA9D
----- Original Message -----
From: "alf sauve" <alf.sauve@wcom.com>
To: <amsat-bb@AMSAT.Org>
Sent: Tuesday, May 23, 2000 4:08 PM
Subject: [amsat-bb] Re: TH-D7A (G)


> SORRY KENWOOD,  You only list this radio as "WORKING" 438-450, so I, as
I'm
> sure others have just passed it by.  I'd rather buy a radio where the
> manufacturer is confident it works on the ham frequencies I need to work.
>
> JON and GARY:  Thanks for the update.   Hopefully I haven't wasted a lot
of
> other people's bandwidth, but I can't believe I'm the only person in the
> world who didn't know this.   It would be interesting to know exactly what
> frequencies a stock, out of the box, D7A(G) will transmit and receive.
>
> Alf - W4ADS
>
>
> ----- Original Message -----
> From: "Jon Ogden" <jono@enteract.com>
> To: "alf sauve" <alf.sauve@wcom.com>; <amsat-bb@AMSAT.Org>
> Sent: Tuesday, May 23, 2000 4:49 PM
> Subject: Re: [amsat-bb] HUH? New! Satellite Digital Messaging
>
>
> > The 438 to 450 range is probably the range over which the specs are
> > guaranteed.  The radio transmits without a problem in the range of 430
to
> > 450 MHz.  I wish it would transmit on 420 to 430 as well, but oh well.
> >
> > Yes, satellite downlinks are below 438 MHz.
> >
> > I am not sure how much the performance degrades below 438 MHz.  Anyone
> done
> > any real studies or testing on it?
> >
> > Also, I'd expect the news link to be broken as they probably are
updating
> > it.  The (G) model exists (I have it) and it will be available shortly.
> >
> > 73,
> >
> > Jon
> > NA9D
> >
> > ----- Original Message -----
> > From: "alf sauve" <alf.sauve@wcom.com>
> > To: <amsat-bb@AMSAT.Org>
> > Sent: Tuesday, May 23, 2000 1:58 PM
> > Subject: [amsat-bb] HUH? New! Satellite Digital Messaging
> >
> >
> > > This is cool, but boy am I dense or something.  I even went to the
> Kenwood
> > > site TODAY (5/23) and downloaded the manual for the TH-D7A.  It only
> > covers
> > > 438-450Mhz.  So, I went to the latest AMSAT bulletin to check.   Most
> all
> > > the satellites operate BELOW 438MHz.  Out of range of the TH-D7A.
> > > (UO-14-435.07; AO-27-436.795, SO-35-436.291.)
> > >
> > > So either, Kenwood isn't publishing all the specs correctly (Hey
> Kenwood!)
> > > OR
> > > I have the frequencies all wrong for the birds.  (wake up Alf)
> > > OR
> > > I can spend $450+ for this fancy radio and then have to make a mod to
> it,
> > > voiding the warranty, in order to use it. (again HEY KENWOOD!)
> > >
> > > Alf - W4ADS
> > > p.s..  I saw no announcement on the (G) model.  In fact their "news"
> link
> > > (http://www.kenwood.net/news/) is broken (3pmEDT 5/23)
> > >
> > >
> > > ----- Original Message -----
> > > From: "Jon Ogden" <jono@enteract.com>
> > > To: "Bob Bruninga" <bruninga@nadn.navy.mil>; <amsat-bb@AMSAT.Org>
> > > Cc: "Robert Bruninga" <bruninga@arctic.usna.edu>
> > > Sent: Monday, May 22, 2000 8:08 AM
> > > Subject: Re: [amsat-bb] New! Satellite Digital Messaging
> > >
> > >
> > > > on 5/21/00 11:07 PM, Bob Bruninga at bruninga@nadn.navy.mil wrote:
> > > >
> > > > > At Dayton, Kenwood revealed the 9600 baud upgrade to their
existing
> > > > > 1200 baud APRS handheld,
> > > >
> > > >
> > > > It's not ONLY a 9600 baud upgrade to the TH-D7A, it ALSO is now
> capable
> > of
> > > > operating cross band so it is no longer just a RECEIVER for the
birds.
> > > Now
> > > > you can work the birds with the TH-D7A.  They also made it KISS
> > compliant.
> > > >
> > > > For those who don't know, it's now called the TH-D7A(G).  It will be
> > > > available from Kenwood probably after June 1st for $60.  It adds a
> BUNCH
> > > of
> > > > good stuff to the radio.
> > > >
> > > > 73,
> > > >
> > > > Jon
> > > > NA9D
> > > >
> > > > -------------------------------------
> > > > Jon Ogden
> > > > NA9D (ex: KE9NA)
> > > >
> > > > Member:  ARRL, AMSAT, DXCC, NRA
> > > >
> > > > http://www.qsl.net/ke9na
> > > >
> > > > "A life lived in fear is a life half lived."
> > > >
> > > > ----
> > > > Via the amsat-bb mailing list at AMSAT.ORG courtesy of AMSAT-NA.
> > > > To unsubscribe, send "unsubscribe amsat-bb" to Majordomo@amsat.org
> > >
> > > ----
> > > Via the amsat-bb mailing list at AMSAT.ORG courtesy of AMSAT-NA.
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> > >
> >
>
> ----
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>

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