Re: [Flexradio] Fun with the SDR-1000

2005-09-26 Thread Eric Wachsmann - FlexRadio
This is really great. I can imagine a day when people will sign up to participate in hands-on training for the software before they even receive the radio. This could really be a great way for the more experienced users to impart some of their learned wisdom to the new customers. J

Re: [Flexradio] SDR1000 IQ Signal Recordings

2005-09-26 Thread Eric Wachsmann - FlexRadio
Comments below. -Original Message- From: KD5NWA [mailto:[EMAIL PROTECTED] Sent: Sunday, September 25, 2005 4:05 PM To: FlexRadio - Eric; FlexRadio@flex-radio.biz Cc: [EMAIL PROTECTED] Subject: RE: [Flexradio] SDR1000 IQ Signal Recordings I've been playing with the settings on the

Re: [Flexradio] Receiver Sensitivity

2005-09-26 Thread Eric Wachsmann - FlexRadio
The High Preamp initialization was an issue before the Beta 1.4.5 Preview 1. This should not be an issue going forward. Eric -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of [EMAIL PROTECTED] Sent: Sunday, September 25, 2005 2:11 PM To:

Re: [Flexradio] Receiver Sensitivity

2005-09-26 Thread Eric Wachsmann - FlexRadio
Bob, Depending on the signal source, you may not hear an audible difference between the various Preamp modes because the AGC is normalizing the audio to roughly the same levels. Note that the software compensates for the various Preamp modes by adjusting the display and s-meter in

[Flexradio] USB-hub malfunction

2005-09-26 Thread Klaus_Lohmann
Hi all, Kurt asked me to relay his dedicated experience he made when using a TYPHOON "Anubis" 4-port USB hub. After extensive research he finally could trace some random audio bursts and/or clicks to the mentioned hub. Thanks Kurt! 73 - Klaus, DK7XL

Re: [Flexradio] Audiocards, USB, etc.

2005-09-26 Thread Ken - N9VV
To amplify Lee's point; for a very dramatic spectrum display of the HF noise, take a look at the demonstration that Alan K2WS did with his Audigy-2zs card! http://www.n9vv.com/K2WS.html (scroll down) Ken Pedlow, Lee wrote: The use of A weighting in A/D D/A measurements is a bit of

Re: [Flexradio] Audiocards, USB, etc.

2005-09-26 Thread Gerald Youngblood
Unweighted dynamic range is approximately 3dB below A weighted. Some converters specify both. Gerald K5SDR -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Behalf Of Pedlow, Lee Sent: Monday, September 26, 2005 2:31 PM To: Jim Lux; Tayloe Dan-P26412; Ahti

Re: [Flexradio] USB-hub malfunction

2005-09-26 Thread Robert McGwier
Why is he using an EVIL Goa'uld named hub anyway? (If you don't understand, never mind, science fiction geek at the keyboard). Bob [EMAIL PROTECTED] wrote: Hi all, Kurt asked me to relay his dedicated experience he made when using a TYPHOON Anubis 4-port USB hub. After extensive

Re: [Flexradio] Audiocards, USB, etc.

2005-09-26 Thread Pedlow, Lee
While the aggregate effect of A weighting vs. unweighted might appear to be only 3dB, the power spectral density (PSD) difference is enormous! The whole point of the apparent 100 plus dB SNR on a delta-sigma device is a technique where the conversion noise is shifted out of band. That's why we

Re: [Flexradio] Audiocards, USB, etc.

2005-09-26 Thread Jim Lux
At 07:08 PM 9/26/2005, Pedlow, Lee wrote: While the aggregate effect of A weighting vs. unweighted might appear to be only 3dB, the power spectral density (PSD) difference is enormous! The whole point of the apparent 100 plus dB SNR on a delta-sigma device is a technique where the conversion