[hpsdr] Questions about Ethernet and Bandwidth

[Jeremy McDermond]

On Aug 26, 2011, at 1:25 PM, n3evl wrote:

> ***** High Performance Software Defined Radio Discussion List *****
> 
> On Aug 24, 2011, at 9:33 PM, Jeremy McDermond <mcdermj at xenotropic.com> wrote:
>>>  That means that each packet is 1090 octets -- that's 1720 bits.
> 
> 
> Errr...I think 1090 Octets = 1090 x 8 = 8720 bits

Yeah, I realized that shortly after sending the message.  I think I typoed the first digit and it propagated through the math.  To correct the rest:

1000000000 bits per second /  8720 bits per packet = 114678 packets/sec

114678 packets/sec * 126 samples/packet = 14449541 samples/sec = 14.449 Msps

So, 14.5 MHz or so.

This is part of why I showed my work. :)

> Pete, N3EVL


--
Jeremy McDermond (NH6Z)
Xenotropic Systems
mcdermj at xenotropic.com




 1314828142.0