[aprssig] Alinco DR-135TP

[Ron Stordahl]

Isn't the D700 also a problem in KISS mode?  I know of 2 users who tried 
UIView32 with the D700 in kiss mode, and it worked for a while, but 
always eventually locked up.

Ron

hasan schiers wrote:
> 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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>
>
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