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ZL3AI > APRDIG 16.05.03 09:16l 221 Lines 9270 Bytes #999 (0) @ WW
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To : APRDIG@WW
Subject: Re: APRS, How Much RAM is TOO Much?
From: Mark Sproul <msproul@jove.rutgers.edu>
Date: Mon, 12 May 2003 16:03:19 -0400
X-Message-Number: 18
Mark Fellhauer
I dont know where you get your information but I have never had such
issues with Macs. yes older macs can only take so much memory, same
for older PCs. I MANY times have taken memory out of PCs to put in
macs.
The last time the Mac OS had a memory limit was back in 1989, The
current limit in Macs is 2 gigs which is the current limits in most
PCs
Macs have changed which type of memory sticks they use, but so have
PCs. Normally Macs adopt a new type of memory stick (the DIMM for
example) and PCs start using the same type of memory the next year.
I have never had to buy "certified RAM" for macs, I have always
bought it from the same distributors that I buy PC memory.
Mark Sproul
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Mark Sproul |
http://ecs.rutgers.edu |
msproul@jove.rutgers.edu |
Manager - Engineering Computing Services | 732-445-3121
Rutgers University School of Engineering |
Eng D111 |
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Subject: FIPS codes
From: "Wes Johnston" <wes@johnston.net>
Date: Mon, 12 May 2003 17:05:46 -0400
X-Message-Number: 19
On a tip from Steve Dimse, I've stumbled on a gold mine of HTML documents
which detail and link to each and every county in every state. I am in the
process of running the county outline files thru a script I've written which
converts the links to work with the necessary FIPS folders on the tiger web
site.
so far, I have
wes.johnston.net/aprs/fips/florida_fips.html
wes.johnston.net/aprs/fips/florida_fips.html
wes.johnston.net/aprs/fips/florida_fips.html
wes.johnston.net/aprs/fips/florida_fips.html
wes.johnston.net/aprs/fips/florida_fips.html
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Subject: Re: KISS Tracker?
From: "Alton" <n5psp@n5psp.org>
Date: Mon, 12 May 2003 16:33:52 -0500
X-Message-Number: 20
Here's what I did:
I tied a PicoPacket in parallel with a TinyTrak2, on the radio
interface side. TXAudio was simply tied together, as was RXAudio,
PTT, and Ground into an Alinco DR-1200.
It turns out the output impedance of both units is such that the
audio gets summed quite nicely, although a cleaner solution would
be to use an op-amp with a gain of -1. The receive audio has plenty
of output to drive both devices as well.
Then on the PicoPacket, I set LOC EVERY 0, and XMITOK N so I
can monitor positions with the notebook computer, without
WinAPRS occasionally sending out positions matching the original
home QTH. I'm still fishing for settings that will really work well and
permit messaging when the computer is plugged in, yet only the
TinyTrak permitted to send positions.
So far it seems to work well. It is N5PSP-9.
It can't monitor the TinyTrak packets going out, but it can monitor
any that are digipeated back, which is excellent to map where it is
heard and digied.
On 10 May 2003, at 7:45, Rich Osman wrote:
>Most of the time the tracker in my vehicle won't have a PC connected.
>For those times, I'd still like to have features like smart beaconing
>that a standalone TNC will not do. I'd also like to be able to switch
>between a few preset configs (in city, rural highway,etc.) I think what
>Iwant is a TinyTrack without a modem. I'll cut the serial port over
>when the PC is connected.
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Subject: Re: APRS, How Much RAM is TOO Much?
From: "Mark Fellhauer" <sparkfel@qwest.net>
Date: Mon, 12 May 2003 17:18:56 -0500
X-Message-Number: 21
At 03:03 PM 5/12/2003, Mark Sproul wrote:
>Mark Fellhauer
>
>I dont know where you get your information but I have never had such
>issues with Macs. yes older macs can only take so much memory, same for
>older PCs. I MANY times have taken memory out of PCs to put in macs.
Got the info straight from Apple's web sight, and based on personal
experience. Personal experience being building and upgrading all forms of
SOHO computers for the last 16 years, working for a computer OEM at a mixed
use manufacturing facility, working with/for Honeywell, Intel, Motorola,
and Burr Brown, not to mention knowing and working with a few badged Apple
and ex-Apple employees...
I remember populating motherboards and memory expansion boards with DIPs
and SIPs...
I never said that PC's don't have their own peculiarities based on
motherboard, BIOS, or case clearance issues. I merely pointed out that
options for expanding an Apple computer may be more limited than that of a
PC platform. Heck I have some PC motherboards around here that need 60NS
EDO DIMMs of no more than 64MB and take a COAST (Cache-on-a-stick)
Module. But the EDO DIMMS should not be an N x 4 DRAM Base... Thanks
Intel. Most people couldn't identify an N x 4 DIMM if it jumped up and
bit them.
NOTE: I did attach a link to a pretty comprehensive web page. I would
also refer you to www.lowendmac.com. Some DIMM's and SO-DIMMS are
actually much taller than others and I have run into clearance problems in
all forms of computers both desktops and laptops. Lowendmac points out
that SO-DIMMs taller than 1.5" will not fit in the tray-loading
iMacs... Trust me, I have some SO-DIMM's that are taller than that.
Recently someone asked me to install some DIMMs in their HP PIII Pavilion
with a micro-tower. I found the DIMMS she bought were too tall to
physically fit in the space available and despite the table on HP's web
site which said her computer would take 256MB SDRAM in each slot, we found
that was incorrect and that DIMMS over 128MB were not recognized properly
by the system. A trip to the local screwdriver shop got us some lower
profile DIMMS of 128MB each. OTOH, I have a old Packard Bell around here
that takes and works with a lot more memory than the manufacturer specified.
>Macs have changed which type of memory sticks they use, but so have
>PCs. Normally Macs adopt a new type of memory stick (the DIMM for
>example) and PCs start using the same type of memory the next year.
Many older Macs will only run on EDO low profile SIMMS. These are
becoming all but nigh impossible to find NOS that come with a
warranty. The 64MB variants run about $80 each. Yeah you can find them
on eBay for 10 bucks or less, but that's pretty much a gamble. Gambling
is fine for your personal computer, but I don't like experimenting/gambling
on a client's back.
>I have never had to buy "certified RAM" for macs, I have always bought it
>from the same distributors that I buy PC memory.
By certified I mean that they have been tested to actually fit and work in
Apple computers. Obviously you can get lucky and generic RAM randomly
selected and installed may fit and work. More than likely it will, but
when you're dealing with mail order, buying, waiting, trying, returning...
can be a major hassle.
I guess what I'm trying to say is that upgrading computers of any type is
fraught with problems, pitfalls, and gotcha's. I've seen people get into
the neverending upgrade spiral where they end up spending more money to
upgrade a 3 year old computer than it would've cost to buy a newer better
computer. People buy into the MYTH that more RAM = Better Performance
and that is so many times incorrect. Try putting more RAM in an NT or
Win2K machine and many times if you don't reconfigure some other settings
you make actually see more low virtual memory errors and/or lose your
network hard drive and/or printer connections randomly. Been there, done that.
I have seen the results of people mixing and matching RAM of different
type, age, capacity, manufacturer and it's not always pleasant to see the
results - Like that black screen than says "Windows Protection Error..."
Regards,
Mark
KC7BXS
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Subject: FIPS locator
From: "Wes Johnston" <wes@johnston.net>
Date: Mon, 12 May 2003 21:32:22 -0400
X-Message-Number: 22
http://www.aprs.net/fips/
Steve Dimse was kind enough to provide webspace for my little graphic fips
locator. Use this to download the tiger map files for your area!
Wes
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Subject: Re: APRS, How Much RAM is TOO Much?
From: "Brian Riley (maillist)" <n1bq_list@wulfden.org>
Date: Mon, 12 May 2003 21:36:32 -0400
X-Message-Number: 23
No you can easily run them to 384, but to bump to 512 you have to replace
the low profile 128 under the processor board with a harder to find low
profile 256 ... But 384 is easy, no hacks needed ... and by the way, the
5-flavors will run OSX just fine even on a G3/233, you aren't going to do
any heavy duty MP3 ripping or number crunching, but APRS, web browsing
emailing and word processing go just fine even altogether.
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