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VK7AX > WIA 08.08.15 01:22l 41 Lines 1474 Bytes #999 (0) @ WW
BID : 25756-VK7AX
Read: GUEST
Subj: [WIA-News] Windows bug can affect digital modes
Path: IW8PGT<CX2SA<VK7AX
Sent: 150807/2246Z 25756@VK7AX.#ULV.TAS.AUS.OC [Ulverstone] $:25756-VK7AX
From: VK7AX@VK7AX.#ULV.TAS.AUS.OC
To : WIA@WW
Windows bug can affect digital modes
Date : 01 / 08 / 2015
Author : Chris Platt - VK5CP
In this digital age is the ever present is the threat of errant software.
Now comes a warning that digital modes used by radio amateurs in the popular
Windows platform can be degraded, but a fix is available.
It seems there is a bug with the USB audio chipset used in sound interfaces
that occurs in Windows Vista and later.
The affected chipset is the TI PCM2900 series PCM2904 and below,
and pre-C revisions.
Attention to it comes from Michael Carey VK5ZEA who has used the fix
with success.
He had a few weird things happen since upgrading his shack PC to Windows 7.
The original information seems to be Jon Sands KD9DAL, who has posted a
non-exhaustive list of devices including all Icom, Kenwood and Yaesu
radios with USB audio, and the popular Signalink USB interface.
He warns that: "If you have one of these devices,
on windows vista or later, your performance is reduced due to this bug,
even if you think it's working fine."
Jon KD9DAL said that the bug is very odd and has some quirks that bring it
back very often even after the fix.
A detailed YouTube shows it and real measurements of the affects.
(Sourced from the WIA Website)
http://www.wia.org.au/newsevents/news/2015/20150801-1/index.php
(Posted to the Packet Radio Network courtesy Tony VK7AX)
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