I wonder what is a good quality notebook?
73,
John N1JM
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Dudley Hurry
Sent: Tuesday, June 27, 2006 12:29 AM
To: Gary W Strong; flexradio@flex-radio.biz
Subject: Re: [Flexradio] Notebook computers
Gary and
At 06:16 AM 6/27/2006, John L Merrill wrote:
I wonder what is a good quality notebook?
73,
John N1JM
John,
I am happy with my Sony VIO, particularity with the display and video
card. It runs faster at 1.8 GHZ than my HP AMD desk top at 2.1
GHZ. I got it on sale; probably last years model.
My 2.4 GHz Sony Vaio is solid and fast. I need to clean it out because
the fan is always on high but it is solid. I am reluctant to give it up
for one of these throttling monsters that you can't choke off from
throttle. My Dell laptop which runs Linux, has the throttle problem.
It is great
Robert McGwier wrote:
My 2.4 GHz Sony Vaio is solid and fast. I need to clean it out because
the fan is always on high but it is solid. I am reluctant to give it up
for one of these throttling monsters that you can't choke off from
throttle. My Dell laptop which runs Linux, has the
My HP/Compaq TC1100 Tablet PC has both a throttling CPU and a variable
speed fan. On battery, it runs at full speed (unless it's getting warm)
but the backlight dims. Runs at 1GHz normally, but on CPU bound tasks
(e.g. running NEC4) it slows down to around 300 MHz. It uses a Pentium M of
Eric Wachsmann - FlexRadio wrote:
Alan,
A notebook 1GHz+ with the Extigy will work. However, it will not have
the same dynamic range as our recommended cards provide. In short, the
legacy cards (Extigy, MP3+, Santa Cruz, Audigy 2 ZS) will work in terms
of being able to receive and transmit.
on
it. No I'm going to start playing with SDR in the Tablet mode.
Thanks,
Ken - N8KJG
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hi eric -
ok, i had to wait 'till field day was over, but, i have everything running
perfectly now. all the drivers had to be removed and reinstalled. the
griffin knob works great and so does the rest of the radio. what a great
radio it is too.
i would like to opine on the whole flex radio
My teenage son questions the suitability of any software-defined radio
-- especially one depending on a computer running Windows -- as a
reliable means of communications in emergencies. Any takers?
If I take the plunge and buy an SDR-1000, I expect to install my Icom
IC-706MkIIG in the car
Sounds like your son is a Linux user :-)
Embedded systems with dedicated processing may indeed be better
than a common Windoze desktop, however, with some care and
optimization, XP is proven to be a suitable platform for the
invention and development of the next generation of Ham Radio
Alan,
My opinion is that there are 2 things to keep in mind:
- Use a good quality computer (almost no problem nowadays) with
a good powersupply (my 12 volt with invertor to 220volts failed, the
charger starved)
- Dont use the computer for (to many) other applications. I installed
It looks like there are lots of places to get a Presonus Firebox, some
cheaper than others, etcand of course eBay.
I am wondering if there are advantages of where to get one, i.e. firmware
version, what to look out for, etc. since I have seen a number of
discussions going on here for
It's not quite like the Windows PC is controlling an elevator, a
failure would be catastrophic in that case.
There is always the re-boot off course, but if one wanted to cover
oneself for the worst possible situation, one would have as part of
the emergency kit a spare HD with an identical
Multiple profiles is not very difficult, it's not widely used but it
fairly easy.
Each user have their own profiles, but you can have more than one and
select at boot time which profile to load. In the device manager you
can control each device and what profile they work under, the same
thing
Mike,
I have both and there are several discussions on this in the Archives on
both the reflector and the Yahoo group. There are several reasons for
picking one over the other. They depend on operating preference (phone
vs. other), mobility, cost, and computer system resource usage. There
is no
Heisenberg's Principle of Uncertainty at work here. What profiler
does not in itself change how the system runs.
On my PC it goes from roughly 20% to 10% utilization, and how
accurate is that? It would be interesting to see how much time the
software is spending waiting for audio packets to
My teenage son questions the suitability of any software-defined radio
-- especially one depending on a computer running Windows -- as a
reliable means of communications in emergencies. Any takers?
If I take the plunge and buy an SDR-1000, I expect to install my Icom
IC-706MkIIG in the car
and
always the same way round. ie FT1000 higher than the SDR.
I think the problem arose following a Microsoft update but I can't be sure.
Any ideas please
Cliff
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Eric Wachsmann - FlexRadio wrote:
[snip]
All true.
It is also true that I took a rather ordinary Celeron laptop and an
Extigy to Belize last year and it worked very well under contest
conditions (at the time, the Extigy was basically all we had). Of
course, we were the pursued, which
I have a strange fault on my SDR, the frequency of received signals seems
to be offset by about 57.8 KHz.
For example a signal detected on my Yaesu FT1000 Rx is shown as 14.137460
MHz but appears on the SDR at 14.079600 MHz
This difference in frequency is substantially constant across the
for the
HM_5. I click the MOX button twice, leave the mouse pointer over the MOX button
and then use the keyboard's space-bar as a push to talk.
Jerry, KD6ET 40M
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Tom:
I was able to reproduce this by having DMA buffers on my D44 too small,
audio buffers on my PowerSDR small. Could you please share with us your
settings for your sound card (latency, DMA settings dependent upon which
card you own) and your audio settings.
Bob
Tom Thompson wrote:
On
In the task bar, on the bottom right, there is a little black
trapezoidal looking M for your M-Audio control panel. It should on the
task bar over by the clock. Double click on it. There is a DMA buffer
size setting there. If it is larger than 512, please decrease it to
512 and try
Tom,
I think what Bob is interested in is the DMA Buffer setting. To find
this setting, pull up the Delta 44 Control Panel and click on the
Hardware Settings Tab. The DMA Buffer size will be on the lower left.
Make sure this is set to 512 (or lower if your system will handle it).
Eric
Bob and Eric,
I reduced the dma buffer size on the Delta 44 to 512 as suggested. This
fixed the flutter, but the pop is still there on all audio tab settings
except 2048 and 48000. None of this occurs on svn 537 even with the dma
buffer set to 2048.
Tom W0IVJ
Robert McGwier wrote:
In
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Hi,All.
My observations (svn 560)
1. Buffer Delta 44 - does not give change for audio pop.
I continue to use 2048 for more smooth of the sound.
2. Buffer Audio - greater importance 2048 сокрашает time pop. Exactly so.
3. Buffe DSP - smaller importance completely avoids pop, 1024 and less.
Hi,All.
My observations (svn 560)
1. Buffer Delta 44 - does not give change for audio pop.
I continue to use 2048 for more smooth of the sound.
2. Buffer Audio - greater importance 2048 reduces time pop. Exactly so.
3. Buffe DSP - smaller importance completely avoids pop, 1024 and less.
for Delta 44 v.5052
SDR1k 1W + Home Made PA
Pentium 4 D820(Dual) 2.8GHz, Delta44, WinXP Pro SP2
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I also have both. I purchased my Firebox off ebay
from a seller that also included a prosumer quality
desk mic for the same price as the firebox alone. The
audio reports have been great and the 48V phantom runs
the mic fine. Given the addition of the mic (valued
at $100 what ever that means)
Dudley and others:
Turns out the Dell Latitudes both needed the speed step fix that Dell offers
on their web site:
R56673.EXE - Patches And Fixes: Microsoft SpeedStep Fix for WinXP, Patch,
Windows XP, English, Multi System, A00, Dated 4/2/2003. This patch is for
the following Dell Notebooks:
Please let me know if the code I checked in fixed the problem. Thanks
for the hint Frank.
Bob
Tom Thompson wrote:
The X2 delay is certainly the key. My svn 537 that was working had the
X2 delay set to zero. When I set it to a larger number the tone can be
heard when switching from
Bob,
I downloaded 1.6.3 svn 560 and the pop is gone with the dma buffer set
to 2048, the audio buffer to 1024, and the dsp buffer to 2048 with the
sampling rate at 96000. When I set the dsp buffer to anything smaller
than 2048, the audio motorboats. However, if I set the audio buffer to
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I never experienced the pops that started this thread, but after the
latest fix (560) I see the same behavior as Tom. I have to keep the
audio buffers high (2048) when the Firebox latency is 6 ms. Anything
smaller results in audio dropouts. I also noticed that something has
effected the VAC
The envelope algorithm in the switching code is still not really
correct (my miscalculation). The whole set of transition
parameters should be specified in seconds and not fractional
buffers. The fix is straightforward but won't be forthcoming for a
few days on account of travel.
I'm starting
At 12:55 PM 6/27/2006, Eric Wachsmann - FlexRadio wrote:
Tom,
I think what Bob is interested in is the DMA Buffer setting. To find
this setting, pull up the Delta 44 Control Panel and click on the
Hardware Settings Tab. The DMA Buffer size will be on the lower left.
Make sure this is set to 512
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