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[aprssig] Tomtom's For APRS (Question)

Jason Rausch jason at ke4nyv.com
Mon Apr 2 02:18:40 UTC 2012


Hey, Hey!  There might be some progress on this already!

http://www.ftdichip.com/Android.htm

Jason Rausch - KE4NYV
RPC Electronics, LLC
www.rpc-electronics.com


--- On Sun, 4/1/12, Jason KG4WSV <kg4wsv at gmail.com> wrote:

> From: Jason KG4WSV <kg4wsv at gmail.com>
> Subject: Re: [aprssig] Tomtom's For APRS (Question)
> To: "TAPR APRS Mailing List" <aprssig at tapr.org>
> Date: Sunday, April 1, 2012, 9:53 PM
> On Sun, Apr 1, 2012 at 7:47 PM, Pat
> Cook <kb0oxd at gmail.com>
> wrote:
> > Sounds like what's going to have to happen is TNC's to
> convert to USB
> > since EVERYTHING is going that way.  What is holding
> back TNC
> > manufacturers?  What's holding back RADIO
> manufacturers?
> 
> I dunno, knowledge of how USB works?
> 
> The host side of USB requires a lot of processing - there's
> a reason
> generic USB peripheral support is only seen on full general
> purpose
> computers.  Even cell phones and tablets, powerful as
> they are, do not
> support plugging in just any USB peripheral.
> 
> As someone has pointed out, there's also the driver issue.
> Even
> something as simple as a serial data stream (i.e. USB to
> RS232) has a
> large number of very different implementations.  Even
> though the
> standard provides for such an interface in the form of USB
> CDC,
> practically no vendor actually uses it (the OT USB and
> latest
> generation of Arduino are the only exceptions I can think
> of), and of
> course microsoft screwed up support for it.
> 
> RS232 is simple, requires little processing power, and can
> transmit
> data reliably across long distances (hundreds of feet).
> 
> IMO the USB interface on the D72 greatly limits the radio's
> utility.
> I hope I don't see any more USB interfaces replacing RS232
> on radios.
> 
> -Jason
> kg4wsv
> 
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