Hi Tim,

Thanks, here are my details... I just wanted to get the ball rolling on a known 
issue across many SVN's, Firmware & release dating back to pre-pal. We would 
like to re-visit the issue please.

What version of PowerSDR are you referring to?  SVN3501

What Hardware platform are you using? Flex5000A

What Firewire driver are you using? (assuming a FLEX-x000) 3.5.0.7171

What firmware are you using? (assuming a FLEX-x000)  2.0.0.3

This is my current status, Les will contact with his details.

73'

James

--- On Thu, 21/1/10, Tim Ellison <[email protected]> wrote:

From: Tim Ellison <[email protected]>
Subject: RE: [FlexEdge] ARQ mode Problems Winmor / RFSM etc
To: "James Nelson" <[email protected]>, "flexedge" 
<[email protected]>
Cc: "[email protected]" <[email protected]>
Received: Thursday, 21 January, 2010, 5:43 PM

What version of PowerSDR are you referring to?

What Hardware platform are you using?

What Firewire driver are you using? (assuming a FLEX-x000)

What firmware are you using? (assuming a FLEX-x000)

This information should always be included in a post like this because if it 
isn't there is no reference point to start with.



-Tim

-----Original Message-----
From: [email protected] [mailto:[email protected]] 
On Behalf Of James Nelson
Sent: Thursday, January 21, 2010 1:37 AM
To: flexedge
Cc: [email protected]
Subject: [FlexEdge] ARQ mode Problems Winmor / RFSM etc

Hi All,

Recent excitment with the Winmor project has been the recent catayst for 
looking once again closely at latencies & syncing with data traffic and so 
whilst ruinning 2 gateways in our region full time with many beta testers 
watching connects from myself and others we have observed the following;

When using SDR (like pactor) I have kept the buffers both in driver and DSP at 
512. Usually the connects are 1st time however during the connection at a 
random time the ack frames become shortened or truncated hence the data frames 
are damaged and the connection is lost.

What we have found using "hit and miss" experimentation is by restarting the 
Psdr console "off then on" for one second or more during the symptom described 
above, the synchronization for the PTT and Audio becomes re-aligned and 
consequently they renegotiate and the connection is saved. Should the power 
"off and on" remedy not be actioned completion of the transfer cannot be 
processed resulting in both stations simply calling it quits.

Observations would indicate an audio truncation with the PTT timing. Having a 
VOX selection on the VAC in Digi U/L mode may create a workaround but a 
solution to the underlying PTT & Audio alignment problem would place our SDR's 
"up there" with the real time radios thwarting the SDR latency critics. With 
the help of Les Keppie VK2DSG we have been trying to solve the ARQ mystery. 

Any help here Gentlemen is very much appreciated.

73'

James. VK2JN. &. Les  VK2DSG
    

------------------------------
Sent from my iPhone
------------------------------


      
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