[Xastir] HSP cable

[BobDonnell at arkalmus.com]

Hi again Stephen,

Looking at that design, I can think of ways that have a higher
likelihood of working.  That said, without having to make major changes,
I'd suggest reducing the value of the resistor that runs between the two
Pin 3 connections - take it down to say 2200 ohms and see if that works.
I'm going to query the NWAPRS mailing list and see if I can find out
more info - this appears to have been done by someone here in the
northwest, or the file has been renamed - the only place Google found it
was in the NWAPRS web site.

73, Bob

>-----Original Message-----
>From: xastir-bounces at xastir.org [mailto:xastir-bounces at xastir.org]On
>Behalf Of Stephen West-Fisher
>Sent: Wednesday, May 07, 2003 4:54 AM
>To: xastir at krypton.hscs.virginia.edu
>Subject: Re: [Xastir] HSP cable
>
>
>BobDonnell at arkalmus.com wrote:
>> Hi Stephen,
>> 
>> Where did you get the plans for building your HSP cable?  Finding out
>> how it was designed is the first step...
>> 
>> 73, Bob, KD7NM
>> 
>> 
>> 
>>>-----Original Message-----
>>>From: xastir-bounces at xastir.org [mailto:xastir-bounces at xastir.org]On
>>>Behalf Of Stephen West-Fisher
>>>Sent: Tuesday, May 06, 2003 6:03 PM
>>>To: xastir
>>>Subject: [Xastir] HSP cable
>>>
>>>
>>>After getting my hands on a cheap GPS, I tried my hand at 
>building an 
>>>HSP adapter.
>>>I cannot seem to get it to work properly, and I'm not sure if I have 
>>>something
>>>misconfigured or a problem with the HSP itself.
>>>
>>>Xastir works fine with just the serial cable and no GPS. 
>I've got the 
>>>KPC3 set to 4800 8N1. When I attach the HSP and GPS, Xastir 
>only sees 
>>>the GPS, I don't get anything from the TNC. Yes, I changed the 
>>>interface 
>>>to HSP.
>>>
>>>Any ideas? I'm not quite sure how I should trouble shoot the HSP, so 
>>>links to appropriate places would help as well as giving me 
>the answer 
>>>directly.
>
>The plans came from http://www.nwaprs.org/hsp.jtm. I built the DB-25 
>version.
>
>
>-- 
>Stephen West-Fisher
>Coastal Data Systems
>727.418.9774
>http://www.coastaldatasystems.com/
>
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