At 05:14 PM 4/11/2007, John Ackermann N8UR wrote:
>Jim Lux said the following on 04/11/2007 07:52 PM:
>
> > If you multiply it up to 200 MHz for the SDR1K, the noise would
> > increase by 20logN, or 26 dB.. That would make the noise at 1kHz out
> > about -124dBc/Hz. The VF161 in the radio already
At 05:29 PM 4/11/2007, [EMAIL PROTECTED] wrote:
>quote
>"I've been thinking of the implications for multiple simultaneous same
>band operations.. Since you're transmitting, conceivably, a few
>hundred Hz or a few kHz away from where you're receiving, this
>presents some very challenging signal proc
I have just struck an odd problem and I would appreciate some advice.
I started the software, and it worked ok, while I checked the calibration
against WWV on 15mhz.
I stopped the software, then restarted everything appears to work , BUT it does
not receive,
ie after pushing standby, there is n
Could the sampling of the Noise Blanker be done with another Sub RX? You
could park the Noise Blanker sampling Sub RX in a quiet section of the band.
- Original Message -
From: "KA5MIR" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Wednesday, April 11, 2007 10:22 AM
Subject: Re: [Fle
quote
"I've been thinking of the implications for multiple simultaneous same
band operations.. Since you're transmitting, conceivably, a few
hundred Hz or a few kHz away from where you're receiving, this
presents some very challenging signal processing problems.. If you
had sufficient dynamic range
Jim Lux said the following on 04/11/2007 07:52 PM:
> If you multiply it up to 200 MHz for the SDR1K, the noise would
> increase by 20logN, or 26 dB.. That would make the noise at 1kHz out
> about -124dBc/Hz. The VF161 in the radio already has a floor of
> about -125 dBc/Hz at 1kHz out, so it's
At 11:28 AM 4/11/2007, Mike Monnier wrote:
>Hello,
>
>I picked up a Brandywine GPS4 time and frequency standard that I hope to use
>with my SDR 1000. I would like you to look at the phase noise specifications
>and tell me if this item is usable as a master oscillator for the rig or a
>calibration t
Is the measured mic voltage, described meter (average) or scope (p-p) ?
Jim McLester ai4vx
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I don't see any way to correct this problem without changing the Delta 44
card and comparing the output with another one and if there is a problem
with the PCI Bus I couldn't touch that either because my PC is functioning
perfectly. I also use the PC for video editing and DVD authoring.
It seem
I've never seen a Delta 44 that didn't measure around 1Vrms. This could
indicate a problem with the card itself or maybe the voltage on the PCI bus.
Eric Wachsmann
FlexRadio Systems
> -Original Message-
> From: Edwin Marzan [mailto:[EMAIL PROTECTED]
> Sent: Wednesday, April 11, 2007 2:2
Bill, have you grounded your PC (from the hex headed screws around
the power supply) to the rig? it sounds like a ground loop issue. I
had to run a separate ground wire from my PC --> RIG --> ATU -->
Power Supply to eliminate problems with RFI leaking back through the
software in the PC.
Ken
With line isolators the voltage is .20. Without line isolators voltage is
.60. I'm using the radio shack model.
Do you think there may be something wrong with the Delta 44?
Edwin Marzan
AB2VW
>From: "Eric Wachsmann" <[EMAIL PROTECTED]>
>To: "'Edwin Marzan'" <[EMAIL PROTECTED]>,
>Subject:
Am running in to the following problem: With a high rf field in the shack from
a nearby antenna on voice peaks the t-r function in the flex is momentarily
disabled then reenambled. I have done all of the usual toroid things on all
lines in and out of both the computer and the flex. The problem e
Are you using line isolators?
Eric Wachsmann
FlexRadio Systems
> -Original Message-
> From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]
> radio.biz] On Behalf Of Edwin Marzan
> Sent: Wednesday, April 11, 2007 12:11 PM
> To: FlexRadio@flex-radio.biz
> Subject: [Flexradio] Low voltage outp
Hello,
I picked up a Brandywine GPS4 time and frequency standard that I hope to use
with my SDR 1000. I would like you to look at the phase noise specifications
and tell me if this item is usable as a master oscillator for the rig or a
calibration tool only.
Frequency10 MHz
Period
Hi Tim,
Thank you for your feedback, I love your marketing and your sales
addiction.
As least when you say No, one would love to have a minimum explanation
rather than just 'No'.
I can cope with answer 37 as it is pure hardware design, but 38 is just
not a fair answer, as long as you have spar
At 09:02 AM 4/11/2007, [EMAIL PROTECTED] wrote:
>Hi Jim,
>
>while I was not thinking about something like this:
>
>http://www.helsinki.fi/~korpela/PU/PU1_2007.pdf
>(pages 1 and 5)
>
>A bank of sub-octave bandpasses would strike as the minimum - this is off the
>top of my head without having done th
With the help of a fellow flexer I was able to test the voltage on my Delta
44 Soundcard and to my surprise the reading was a bit low at .60 volts. When
I changed the value in the setup form from .98 to .60 my SDR-1000 is now
able to calibrate on all bands. It was unable to calibrate all bands u
Hi Jim,
while I was not thinking about something like this:
http://www.helsinki.fi/~korpela/PU/PU1_2007.pdf
(pages 1 and 5)
A bank of sub-octave bandpasses would strike as the minimum - this is off the
top of my head without having done the math and I do not have data about the
Flex-5000 fronten
At my noisy qth, I have to use the noise blankers. This results in strong
signals OUTSIDE the filtered bandwidth, anywhere in the 96kc passband,
modulating the noise blanker INSIDE the filtered frequency range. It often
causes desired signals in the filtered range to be unreadable.
I woul
Jean-marc,
The answers to your question can be found in the Knowledge Base
FLEX-5000 FAQ article listed as questions Q37, Q38, Q39.
http://kb.flex-radio.com/article.aspx?id=10374
-Tim
-
FRS KB Administrator
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Beh
http://www.asio4all.com/
10 April 2007: Version 2.8 BETA 2 - Download ASIO4ALL 2.8 BETA 2!
Changes since version 2.8 Beta 1:
* WaveRT support now also includes event notification mode as
well as support for very basic implementations with no position
register.
* A number of audio d
At 11:38 PM 4/10/2007, Jean-marc BORD wrote:
>Hi,
>
>I have two areas of interests , which I don't see covered in either the
>Flex5000 Faq nor in the SDR1000 kdb
>
>a) The SDR1K main weaknesses are coming from the DDS/mixer board, and at
>a lower level by the non-narrowband BPF.
>On the first issue
Tim,
Your updates to the FLEX-5000 FAQ have been great. Is there some way to
tell what things have been changed from one version to the next? The time
on the FAQ is two hours after the time of your announcement and I don't want
to miss any little detail changes.
Regards,
Richard W5SXD
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