If it's insisted to use the OS sound card; one should make sure that the
audio driver (slightly harder to access in Win 10) does not allow local
microphone (web cam or often built into a laptop) to be accessed EVER
(by disabling it AND reducing the level to zero), lest it find a path
into the transmitter. Checking after each update is required; levels
and setting CAN change then (check 'listen' tabs to deny as well).
That is the same issue as those who choose a mic input for (computer
audio) digital TX, yet fail to disconnect the mic during digital
transmitting, so both go live and unintended station sounds are
transmitted with the wanted digital tones. (head slap!)
Again, a rig costs hundreds plus, a computer (except Pi) does also; yet
there is resistance to adding a $20 item to make legality simpler to
meet... not a significant price.
Phil, you're correct in that it merits a question on the test; it's that
common an error. (No, I won't poke the bear, except to get a better
photo, hi and only from a safe distance).
HNY,
Rick NK7I
On 1/1/2021 5:47 PM, Phil Kane wrote:
On 1/1/2021 5:11 PM, Don Wilhelm wrote:
Just make sure your OS does not set the external soundcard as
default. Windows often does that when you first install it - check
the soundcard settings.
The Winlink VARA setup instructions make this very clear, although I
have never experienced a Win 10 update turning my OS sound selection
on after I have turned it to "No Sounds".
73 de K2ASP - Phil Kane
Elecraft K2/100 s/n 5402
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