Posted by
Richard Smith-23 on
Oct 10, 2007; 4:54am
URL: http://elecraft.85.s1.nabble.com/Comparison-K3-and-SDR-5000A-tp454268p454279.html
Hi John,
As I understand it, latency is no longer an issue. Latency issues with the
early versions of PowerSDR and the SDR-1000 have been resolved. That being
said, signal processing latency is a fact of life for all digital radios.
We are talking microseconds, and I don't think its fair to say that the
performance of the SDR-5000A will be inferior in this respect to other
radios such as the K3. PCs are pretty damn fast processors these days. I
think the much slower serial control commands are more significant in
dictating the feel of the software controlled radio than the signal
processing latency.
73,
Rich W1EZ
----- Original Message -----
From: "John A. McCabe" <
[hidden email]>
Cc: <
[hidden email]>
Sent: Tuesday, October 09, 2007 12:53 PM
Subject: Re: [Elecraft] Comparison: K3 and SDR 5000A
> Hi Rich,
>
> Actually, and correct me if I am wrong on this, but I believe that one of
> the bigger issues with SDR's right now is with latency. There is some
> delay in the processing of the signal on the computer which can cause
> effects such as slower turn around time for CW/Digtal Modes, slightly
> slower tuning, a slight delay in received and transmitted audio, etc. I
> know there has been a lot of improvement made in that area, but I don't
> believe it is quite at the level of other radios such as the K3. . Whether
> or not this latency is more or less more then serial control of a radio, I
> am not sure. But I suspect that some of that might depend on the baud rate
> of the radio. I have a TS-2000 set to 57600 baud and it seems quite
> responsive, whereas my K2 which I believe is 4800 baud is noticeably less
> responsive. I am not sure what the baud rate is on the K3. And as far as
> booting up a computer, I work as a computer consultant, and sometimes the
> last thing I want to do when I get home from work is boot up my computer
> :)
>
> John, KD8K
>
>
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