Quick and dirty solution is to use PC out to one channel of stereo headphones
and radio out to the other channel. Then if needed amplify via small low
cost stereo amp.
--
Sent from: http://elecraft.365791.n2.nabble.com/
__
Elecraft ma
James,
a widely used design is to wire the sources together via some resistors,
and get some gain by a following OP-amp. The resistors could be made as
pots to adjust volume.
I built one for my guitar amp, if you look into DIY guitar electronics
you'll find plenty of design ideas.
here is mine:
lman.qth.net
Subject: Re: [Elecraft] Sorta OT - assistive technology assistance needed
Funny, I just realized I was misreading “OT” as Occupational Therapy. Our son
just finished OT grad school and is studying for the board. Of course,
assistive tech is a big part of occupational therapy.
Funny, I just realized I was misreading “OT” as Occupational Therapy. Our son
just finished
OT grad school and is studying for the board. Of course, assistive tech is a
big part of
occupational therapy.
wunder
K6WRU
Walter Underwood
CM87wj
http://observer.wunderwood.org/ (my blog)
> On Jan 9, 2
if the levels were close, 6 resistors costing pennies would do the job. No case
or machining necessary.
Sent from my iPad
> On Jan 9, 2019, at 8:42 PM, Dave Fugleberg wrote:
>
> I usually like to build stuff when I can, but I have to agree with the
> others who suggested a commercial mixer. T
Not the answer you are asking for but
still maybe a valuable idea for your
friend.
My mother was totally deaf and my father
wanted to teach her code. What he did was
disassemble & repurpose a speaker and made
an arrangement that attached to her
forearm, this connected to the audio
output. T
I usually like to build stuff when I can, but I have to agree with the
others who suggested a commercial mixer. They are cheap and work well.
I recently bought a small behringer USB mixer for under 50 bucks for a
project at work. It acts as a USB sound card, so you can mix audio to or
from the PC w
James,
There was a homebrew headphone mixer in the ARRL Handbook sometime back
- simple, with op-amps to isolate the sources.
However with the advent of 2 to 5 input mixers being available in the
$20 to $60 range (see Amazon), it seems foolish to consider building
your own - drilling the enc
Without knowing more details I think levels are the biggest problem. Otherwise
a simple passive mixer comprised of a few resistors would suffice.
Sent from my iPad
> On Jan 9, 2019, at 6:03 PM, Richards wrote:
>
> Good Day.
>
> Background:
>
> I am assisting a blind ham who also suffers some
"Any traction? Can anyone point me to an appropriate circuit schematic
or other resource? "
You don't mention what rig is being used. Many modern rigs provide a USB port
for use with a PC. This USB port typically provides an audio as well as a CAT
interface. With such a rig, mixing PC sou
] Sorta OT - assistive technology assistance needed
Good Day.
Background:
I am assisting a blind ham who also suffers some hearing loss. I suggested
using headphones to attenuate ambient environmental noise as he operates. The
rub is, he needs to hear both his receiver AND his computer (which
There are simple mixers that are probably cheaper than the parts you would need
to build one.
The Behringer MX400 is a four-channel mono mixer for $25.
https://www.amazon.com/Behringer-Micromix-MX400-Low-Noise-4-Channel/dp/B000KGYAYQ
The Rolls MX51S is a four-channel stereo mixer for $55.
http
Good Day.
Background:
I am assisting a blind ham who also suffers some hearing loss. I
suggested using headphones to attenuate ambient environmental noise as
he operates. The rub is, he needs to hear both his receiver AND his
computer (which provides audible feedback when logging contacts a
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