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[aprssig] Broken digis (Ohio to Oklahoma and everywhere inbetween

William McKeehan mckeehan at mckeehan.homeip.net
Wed Aug 1 21:56:35 UTC 2007


My results with a setup on a motorcycle were less than expected with a 1/4
wave antenna even with 5 and 50 watt setups.

Changing the antenna to a 1/2 wave made a HUGE improvement for me.
-- 
William McKeehan
KI4HDU

On Wed, August 1, 2007 5:50 pm, n0gik at qcom.net wrote:
> Joel,
>
> WIDE1-1, WIDE2-1
>
> Last packet into the IS on the 21st:
>
>  N0GIK-10>APOT02,WIDE1-1,WIDE2-1,qAR,N0GIK-1:!4133.15N/09030.35W< 12.9V 28C
>
> Bike is still on the trailer - so not on the air currently...
>
> John's reasoning is quite logical - but I'm with you and think certainly
> that in the 2000 miles traveled that at least one packet would have made it
> in.  My smart beacon rate pushed one posit per minute above 50mph with a
> minimum of 4 posits per hour. (stationary)
>
> Still - from what I heard - there are some digis that need physical
> attention and I would attest to the original poster's statement that there
> are a few 'broken' out there.
>
> Maybe next time!
>
> Matt
>
> ----- Original Message -----
> From: "Joel Maslak" <jmaslak-aprs at antelope.net>
> To: "TAPR APRS Mailing List" <aprssig at lists.tapr.org>
> Sent: Wednesday, August 01, 2007 1:22 PM
> Subject: Re: [aprssig] Broken digis (Ohio to Oklahoma and everywhere
> inbetween
>
>
>> On Aug 1, 2007, at 10:15 AM, <n0gik at qcom.net> <n0gik at qcom.net> wrote:
>>
>>> I traveled via motorcycle from Denver to Cooke City, MT (I-25  North,
>>> over to Shoshoni and Cody) and back south through  Yellowstone, Jackson,
>>> Rock Springs (WY), Craig CO and over Hwy 40  to Colorado Springs and up
>>> to Denver again.
>>>
>>> I was very QRP (about 100 mw into 1/4 wave).  Probably should have  had
>>> more power - but figured with mountain digis - I'd get at least  a few
>>> reports thru the system.
>>
>>
>> I'm very surprised you didn't make a single packet into the system  too.
>> In WY, there are several digis along the route you took, and I  would be
>> very surprised if no packet ever made it into a "quiet time"  anywhere
>> there.  There's also fairly good IGate coverage of those  digis (if you
>> are using a 2 hop path, preferably 3).  On the other  hand, 100 mw really
>> is low power, so it's possible that it was just  too low.  I know with my
>> normal setup (50 watts into a 5/8 wave, so a  great deal different from
>> what you were doing), I would get good  repeats for a huge chunk of your
>> route no problem.
>>
>> What path were you using?
>>
>>
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>
>
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