[aprssig] Alinco DR-135TP

[hasan schiers]

Not quite, Stephen. The internal TNC kiss mode is a no-go. I have a 135TP 
and it is an ok radio, but for use with ui-view32 or agwpe where kiss mode 
is esssential (for digi-peating), the tnc is an abysmal failure. I use a 
Tiny2 TNC external to the 135, so the internal tnc is practically useless. 
Otherwise it seems to be just fine for an aprs 2m radio.

...hasan, N0AN
----- Original Message ----- 
From: "Stephen H. Smith" <wa8lmf2 at aol.com>
To: "TAPR APRS Mailing List" <aprssig at lists.tapr.org>
Sent: Monday, May 01, 2006 10:22 AM
Subject: Re: [aprssig] Alinco DR-135TP


> mckeehan at mckeehan.homeip.net wrote:
>> This is some great information. I had overlooked the online manuals page 
>> on
>> the Alinco website when I looked earlier. Thanks for making me look 
>> twice.
>>
>> If I'm reading things correctly, it looks like the DR-135TP only operates 
>> as a
>> "dumb" tracker (GPS strings) without a computer connected. Am I missing
>> anything?
>>
>
> Correct!       The Alinco uses the same Tasco TNC-on-a-chip as the 
> Kenwoods, but lacks the sophisticated firmware that allows the Kenwoods to 
> operate as stand-alone two-way APRS terminals using the front panel as a 
> display.    The Alinco is the functional equivalent of any old radio with 
> an external TNC such as a KPC3+ attached.
>
>
> Further, I believe (not 100% certain) that the Alinco in stand-alone mode 
> only transmits the horribly inefficient raw NMEA strings as received from 
> the GPS, over the air.   [ Instead of reformatting the lat/long data into 
> APRS-format that would be 1/3rd the length including symbol codes and 
> comments , or into Mic-E compressed format (such as the Kenwoods do) that 
> is ONE-TENTH  the length. ]
>
>
> The raw NMEA strings waste far more air time on busy channels to send the 
> same information.   They also actually reduce the likelyhood of the data 
> being successfully received.   The much longer strings have a higher 
> probability of getting "stepped on" by other stations, or getting trashed 
> by mobile flutter or pops of noise.
>
> For transmit-only tracker operation, you are FAR better off with a 
> TinyTrack or OpenTrack connected to any old two-meter rig.  These devices 
> not only transmit compressed formats, they also incorporate smart 
> beaconing that varies the beacon rate based on how rapidly your position 
> changes.
>
>
>
>
>
>
>
> Stephen H. Smith    wa8lmf (at) aol.com
> EchoLink Node:      14400    [Think bottom of the 2M band]
> Home Page:          http://wa8lmf.com
>
>
> NEW!   JavAPRS Filter Port 14580 Guide
>  http://webs.lanset.com/wa8lmf/aprs/JAVaprsFilters.htm
>
> UI-View Misc Notes and FAQ
>  http://webs.lanset.com/wa8lmf/aprs/UIview_Notes.htm
>
> "APRS 101"  Explanation of APRS Path Selection & Digipeating
>  http://webs.lanset.com/wa8lmf/DigiPaths
>
> Updated "Rev G" APRS            http://webs.lanset.com/wa8lmf/aprs
> Symbols Set for UI-View,
> UIpoint and APRSplus:
>
>
>
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