On my Old Gateway laptop, the built in Wi-FI does have DPC spike each
60 seconds. If I disable the built in Wi-Fi driver and use an external
Netgear USB WI-FI dongle, then the DPC spikes go away and Flex is happy.
I think the difference is that the built in Wi-Fi performs some
functions in the software driver (Atheos) that the USB dongle preforms
in hardware.
AL, K0VM
On 7/2/2012 10:37 AM, Scott Myers wrote:
As Tim will tell you; Being able to operate a Flex on a laptop (or any
computer) has about ZERO to do with the processor speed of any processor
they have made in the last 10 years or so. I used to run my flex on a
Pentium 4 with 1 Gb of RAM with no problems.
I've tried about 8 different laptops on a Flex. I've had ones with more
processor power work poorly while older ones worked well. There is no
predicting as to which one will work well. It comes down to the solidness
of the bus and the components, not the processor. With the shrinking of
components for a laptop, comes trade-offs in the hardware. And in the
production of laptops, it often comes down to low bid from their suppliers,
unfortunately. This is where the DPC latency comes in. So don't think that
a laptop won't handle CW, it just takes a good laptop.
For what it is worth, I've noted that T series Lenovo's I've tried worked
pretty well. The Dells and HP's I've tried seemed to have poor DSP numbers,
but perhaps that was just the luck of the draw on the models I checked. But
laptops all seem to suffer if the built-in wireless network adapter is left
running. I wonder of using a USB dongle wifi adapter would make a
difference?
73,
Scott AC8DE
-----Original Message-----
From: [email protected]
[mailto:[email protected]] On Behalf Of George Allen
Sent: Sunday, July 01, 2012 3:31 PM
To: Ted Leonard; [email protected]
Subject: Re: [FlexEdge] older slower laptop
I have a Dell Laptop that I used with my F3K. Worked well with the F3K;
but, does not work well with the F1.5K. Too much latency for CW. Was going
to take the laptop and F1.5K with me on field day; but, latency was really
bad.
The Laptop is a dual core Dell (not sure of the speed).
The F1.5K works well with the W7 multicore desk system, so took the big
computer and F1.5K on field day.
George
K2CM
________________________________________
From: [email protected] [[email protected]] on
behalf of Ted Leonard [[email protected]]
Sent: Sunday, July 01, 2012 2:36 PM
To: [email protected]
Subject: [FlexEdge] older slower laptop
I have a 3000 on a nice spedy desktop and life is good. While I realize a
1.6 gHz laptop in XP is pretty minimal for my Flex I would like to try it on
a quick portable op as the laptop runs happily on 12VDC thus eliminating the
need for an inverter. It has a firewire port (unknown chipset) but has the
small rectangular connector on the computer for the firewire cable, I am
guessing there is a standard cable on one end that would go to the Flex and
the small rectangular connector on the other end that would go to the laptop
or it it just a little adapter I would need. (any part reference would be
helpful)
Other option would be I think to use a proper Firewire card in the card slot
it has it will take up to two type l or ll cards or one type lll card what
would be the proper Firewire card to get for this?
Then I could use the Firewire cable I already have. Or am I way off base---I
do realize it would be a minimal setup. It is a Panasonic CF51 Toughbook.
Thanks for thoughts,
Ted W3VG
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