| |
ZL3AI > APRDIG 25.09.03 09:42l 248 Lines 9762 Bytes #999 (0) @ WW
BID : 1976-ZL3AI
Read: GUEST
Subj: TAPR Digest, Sep 22, 5/7
Path: DB0FHN<DB0RGB<OK0PPL<DB0RES<DB0EEO<DB0GOS<ON0AR<WB0TAX<7M3TJZ<ZL3VML
Sent: 030924/1409Z @:ZL3VML.#80.NZL.OC #:8956 [Chch-NZ] FBB7.00i $:1976-ZL3AI
From: ZL3AI@ZL3VML.#80.NZL.OC
To : APRDIG@WW
Subject: Re: Excessive Paths - WIDE5
From: Mark Cheavens <mcheavens@usa.net>
Date: Mon, 22 Sep 2003 16:08:42 -0500
X-Message-Number: 26
What is needed in EACH area is different. Also what is LOCAL to one person
might not be LOCAL to another.
When I drive in SW Colorado the closest I-Gate is 4 hops away. Until I get
the I-Gate installed there this Christmas users that don't run a path of at
LEAST 4-4 won't make it to an I-Gate.
LOCAL when I am talking on the radio is the ENTIRE state of Texas. I talk
to users on UHF all over the state. Reverse gating can fix most of what I
call LOCAL, IF the I-gates would respond to user location queries (see my
LONG post a few minutes ago on this subject)
Mark Cheavens
KC5EVE
>>You cannot make a general "nation wide" statement about paths. When
>>something like WIDE3-3 is excessive in one area, a path like WIDE5-5 might
>>be not only acceptable but actually desireable in other areas.
>
>Bill, show me a case where WIDE5-5 is needed that does not cause excessive
>propagation of the traffic that affects others!
>
>>The distance to the IS has nothing to do with the community "RF network"
>>conventions.
>
>Yes and no. If a guy is trying to get seen on the IS and he can do it 4
>hops less than WIDE5-5, yes is does matter to your 'RF NETWORK".
>
>Jim, WA6OFT
----------------------------------------------------------------------
Subject: Re: Fw: Excessive Paths - WIDE5
From: "Scott Miller" <scott@opentrac.org>
Date: Mon, 22 Sep 2003 14:25:48 -0700
X-Message-Number: 27
SSTV would be a cool capability to have. Is there such thing as a cheap
SSTV encoder? I'm not sure how sophisticated the signal is, but it'd be
pretty cool to build a box that plugs into a cheap QuickCam or something
similar and would snap and encode a frame when you push a button.
Scott
N1VG
----------------------------------------------------------------------
Subject: Re: Fw: Excessive Paths - WIDE5
From: "Bill Vodall - WA7NWP" <wa7nwp@jnos.org>
Date: Mon, 22 Sep 2003 14:27:48 -0700
X-Message-Number: 28
>>You cannot make a general "nation wide" statement about paths. When
>>something like WIDE3-3 is excessive in one area, a path like WIDE5-5 might
>>be not only acceptable but actually desireable in other areas.
>
>Bill, show me a case where WIDE5-5 is needed that does not cause excessive
>propagation of the traffic that affects others!
A "community" might deside they want'ed to see all the digi's "statewide"
on the map on a daily basis. A few WIDE5-5 (or longer) transmissions daily
by the digis would have no real effect on the network.
A large region with little activity (Montana?) might decide it's still
legitimate for everybody to see everybody else.
>>The distance to the IS has nothing to do with the community "RF network"
>>conventions.
>
>Yes and no. If a guy is trying to get seen on the IS and he can do it 4
>hops less than WIDE5-5, yes is does matter to your 'RF NETWORK".
The IS only mobile has to set his path according to his goals. That may
very often be shorter then the network standard. If it's a longer path,
then it's time for more Igates. The "I just want to be seen on RF" mobile
may be using a totally different path. I hope we never evolve to the
point where the sole purpose is to get packets to the Internet...
>Jim, WA6OFT
All this WideN stuff is really a silly distraction. It's (past) time to
replace the existing generation of digipeaters with new hardware and
software that takes us beyond WideN. That'll allow fixing the duplicate
packet transmission issues and finally enable pseudo aliases.
Bill
----------------------------------------------------------------------
Subject: Re: Excessive Paths - WIDE5 (NEW IDEA)
From: "Scott Miller" <scott@opentrac.org>
Date: Mon, 22 Sep 2003 14:39:31 -0700
X-Message-Number: 29
I'd like to see more digis based on small form factor industrial PCs,
running Linux or a similar OS. And I'd love to see a module that'd fit in
a PCI slot or 3.5" floppy bay and provide a multiport DSP function and
radio interface hardware. Modern digipeaters should be more like a network
router, and less like a modem. Soekris Engineering
(http://www.soekris.com/) sells boards for just this sort of thing, for
about $xxx each including a case. Compared to $xxx for a new KPC-3+ or
$xxx for a KPC-9612, that's a pretty good deal, even after you add on the
extra hardware you need.
IMHO, TAPR ought to be developing a packet kit to bolt on to one of these,
or a PC-104 stack, or something similar. Add some generic hardware for
interfacing with repeaters and doing IRLP or whatever, and market it as an
amateur router appliance.
As for the KPC-3, I've mapped out its address space and documented it, but
the processor's a bit of an oddball and it's not the same one used in the
3+, so I didn't want to spend too much time messing with it.
Scott
N1VG
----- Original Message -----
From: "Mark Cheavens" <mcheavens@usa.net>
To: "TAPR APRS Special Interest Group" <aprssig@lists.tapr.org>
Cc: "TAPR APRS Special Interest Group" <aprssig@lists.tapr.org>
Sent: Monday, September 22, 2003 2:02 PM
Subject: [aprssig] Re: Excessive Paths - WIDE5 (NEW IDEA)
>I have stayed quiet long enough!
>
>Here are some ideas that would be helpful and my .02 worth on path lengths.
>
>1. in order for the ideas below to work WE (a group of hams) need to sit
>down and either talk Kantronics into releasing the code for the KPC-3 and
>the KPC-3+ OR do a clean room reverse engineer of the code and write our
>own ROM for it.
----------------------------------------------------------------------
Subject: Re: Fw: Excessive Paths - WIDE5
From: Dave VanHorn <dvanhorn@cedar.net>
Date: Mon, 22 Sep 2003 16:46:54 -0500
X-Message-Number: 30
At 02:25 PM 9/22/2003 -0700, Scott Miller wrote:
>SSTV would be a cool capability to have. Is there such thing as a cheap
>SSTV encoder? I'm not sure how sophisticated the signal is, but it'd be
>pretty cool to build a box that plugs into a cheap QuickCam or something
>similar and would snap and encode a frame when you push a button.
the cheapest i know of, is a laptop running mmsstv.
other than that, it's the tasco box at about $xxx, or the vc-h1, which does
mate well with the TH-D7a
----------------------------------------------------------------------
Subject: OT a little...new volt/ amp meter
From: Wes Johnston <wes@johnston.net>
Date: Mon, 22 Sep 2003 17:48:03 -0400
X-Message-Number: 31
At DCC I bought a watthour meter from west mountain radio. I'd been
looking for an ammeter to go inline with some of my power pole stuff (yes,
I used the P word) and found this instead.
http://www.westmountainradio.com/Whattmeter.htm
The only grips I have about it are that it measures current on the negative
lead, which means if your antenna is ground, it won't read correctly, and
it reads in increments of 100ma, which is kinda broad for trying to measure
things like a GPS. However, I did learn that my d700 draws 2 watts more
when it has the lights on the display off. Neat stuff..... This will be a
GREAT tool for those looking to do comparisons of power draw (it reads
cumulative amp hours) for RELAY, vs WIDE digipeaters in limited power
settings and battery powered trackers. This is good stuff.... No word of
absolute accuracy (really haven't checked it, it may be right on)... but
it's sure to be good in either case for relative comparisons.
Wes
----------------------------------------------------------------------
Subject: Re: Excessive Paths - WIDE5 (NEW IDEA)
From: "Bill Vodall - WA7NWP" <wa7nwp@jnos.org>
Date: Mon, 22 Sep 2003 15:14:58 -0700
X-Message-Number: 32
>From: "Mark
>
>>1. in order for the ideas below to work WE (a group of hams) need to sit
>>down and either talk Kantronics into releasing the code for the KPC-3 and
>>the KPC-3+ OR do a clean room reverse engineer of the code and write our
>>own ROM for it.
Two days ago I would have agreed...
>From: "Scott
>I'd like to see more digis based on small form factor industrial PCs,
>running Linux or a similar OS. And I'd love to see a module that'd fit in a
>PCI slot or 3.5" floppy bay and provide a multiport DSP function and radio
>interface hardware. Modern digipeaters should be more like a network
>router, and less like a modem. Soekris Engineering
>(http://www.soekris.com/) sells boards for just this sort of thing, for
>about $xxx each including a case. Compared to $xxx for a new KPC-3+ or $xxx
>for a KPC-9612, that's a pretty good deal, even after you add on the extra
>hardware you need.
This is what we need! A real computer in a small box to run real software.
Something that we can upgrade remotely for bug fixes or network
improvements. No reason we should have to mickey mouse our paths and make
other compromises to work around buggy or obsolete software that we can't
fix.
73,
Bill - WA7NWP
----------------------------------------------------------------------
Subject: Re: OT a little...new volt/ amp meter
From: WA8LMF2@aol.com
Date: Mon, 22 Sep 2003 19:05:55 EDT
X-Message-Number: 33
In a message dated 9/22/2003 2:59:30 PM Pacific Daylight Time,
wes@johnston.net writes:
>At DCC I bought a watthour meter from west mountain radio. I'd been
>looking for an ammeter to go inline with some of my power pole stuff (yes,
>I used the P word) and found this instead.
>
>http://www.westmountainradio.com/Whattmeter.htm
Good Grief! The vendor seems to not understand units of measurement. The
web page keeps incorrectlly referring to AH as "Amps/Hr"
"AmpHours" are AMPs x HOURs not AMPs divided by HOURs !
----------------------------------------------------------------------
Read previous mail | Read next mail
| |
