As a blind guy, I use the MX400 mixer to put radio audio and screen
reader audio from the pc into my headphones. Works perfect for me.
73, Steve KW3A
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"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
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.
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
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
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.
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
Feed the receiver audio into the Computer and use it to mix the signals.
73,
Bill
K9YEQ
https://wrj-tech.com/
-Original Message-
From: elecraft-boun...@mailman.qth.net On
Behalf Of Richards
Sent: Wednesday, January 9, 2019 5:03 PM
To: Elecraft@mailman.qth.net
Subject: [Elecraft]
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.
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
My K3 has developed a problem and fault 6 is displayed on the front
panel.Anyone have information on fault 6. I contacted Elecraft support and have
not heard back from them.
Thanks, Jim K2ZF
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Using the CAT interface this way is great. BUT you loose some decoding
ability. I run a K3 in RTTY contests, TX is FSK RX is 3 decoders, the
K3 built in, mmtty and 2tone. usually 2tone beats the other 2, with
mmtty sometimes winning. The K3 decoder misses the most. You might
want to try
A very good idea Gordon. I do that with cocoaModem, which allows
me to decode the second receiver as well, allowing Single
Operator Two Receiver contesting. fldigi is also a possibility.
I'm currently in the process of trying to find a place for a
third monitor in my shack so I can have enough
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,
I did check that the RX I/Q was enabled and still hear nothing, on my
computer, when plugged in to the RX I/Q port. I'm ordering a set of adapters
so that I can put my headphones on the radio directly to see what I hear
then. Thanks all for trying to help...
I still wonder if I should hear
Do you still want to use this for fldigi? It is the wrong output for that.
wunder
K6WRU
Walter Underwood
CM87wj
http://observer.wunderwood.org/ (my blog)
> On Jan 9, 2019, at 9:24 PM, Kevin F. wrote:
>
> I did check that the RX I/Q was enabled and still hear nothing, on my
> computer, when
I have and use the Koss SB-40. I get great audio reports.
Yes, I agree, if the mike is not positioned correctly and the TX EQ not
set correctly, it can sound bad. So can any other mike where good mike
technique and application is not correctly used.
73
Bob, K4TAX
On 1/8/2019 11:51 PM,
With regard to "constantly plugged/unplugged", I leave mine plugged in
the rear of my K3S all of the time. I use the PF2 function configured
to switch between SPKR on/off and Headphones and switch the mike from
the front to the rear being the boom mike on the headphones. No
adapters
I suggest another set of CM-500's. They may last 2 years, 5 years or
10 years before they are headed for the trash. Just look at it as a
consumable item and that is just the cost of ownership.
73
Bob, K4TAX
On 1/8/2019 9:00 PM, James Bennett via Elecraft wrote:
Sad to say, but my
These are personal opinions, and headphones are a personal topic... I have a
substantial headphone collection from all the usual suspects gathered over the
years. I seem to collect these things.
An Inrad W1 from Vibroplex has become my favorite. My preferred headphone jacks
are 1/4", and I've
Dick,
You said “My preferred headphone jacks are 1/4", and I've had trouble with
3.5mm to 1/4" adapters from another manufacturer staying solidly
connected.” I agree, the 1/4” jacks/plugs are more rugged than the 3.5mm
especially for devices like headphones that are constantly
plugged/unplugged.
Jim,
I have a pair of Yamaha C-500's which I like a lot, however, I wanted to
try something different that was built a little better.
I picked up an Inrad W1 from Vibroplex. Physically they are built much
better than the CM-500. They are over the ear like the CM-500's and
they do a bit
Hi,
I bought a pair of Koss SB-45 when my CM-500 ear cushion covers started
disintegrating leaving the dreaded black dandruff. My wife fabricated a
couple of fabric covers and the problem was resolved. Recently I was
sent a pair of fabric earphone covers by a friend obtained from Amazon
who
The part of the Amazon ad located at:
https://www.amazon.com/Koss-sb45-SB-45-Communication-Stereophones/dp/B00081A2CW
that says:
"Oxygen-free copper voice coils improve signal transmission & conduction
for a clearer & louder sound."
makes me wonder about the rest of the statements on the
I had written up a nice couple of e-mails for the reflector asking about
upgrading my K3 with a KAT3A & KIO3B. But I went ahead and clicked check
out.
I'm really looking forward to cutting down a bit on the boxes and wires on
my desk. I couldn't think of a more expensive way of doing that!
I
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--
09.01.2019 20:02:33
I am very grateful
I have a K2 with the 100W, K2/100, mounted in the top. I want to obtain
a RS232 cable with male DB9 on one end and female on the other.
In order to make the connection in the back or the K2 it seems the male
plug needs to be modified. That is a slot cut so that it fits the
key/tab that is
I used a pair of Inrad W1s for CQWW and I liked them so much that I asked for a
pair for Christmas. I have not tried them yet.
They are well made and very comfortable.
Note that for CQWW I used them with an ICOM 7851 and not a K3.
I'll use them this weekend with my K3 in the NAQP CW contest .
CM-500 is OK. It had so-so sound insulation (not good with loud amp) and it
disintegrated.
Now I use Sennheiser PC 350. Much better built and better sound insulation.
Ignacy, NO9E
--
Sent from: http://elecraft.365791.n2.nabble.com/
I have a K2 built by another ham and am getting used to it. I I recently
discovered that when I plug my headphones into the headphone jack on the front
the speaker still is active as before. The only way I can disable the speaker
is to insert another plug into the speaker jack on the back. Is
Gene,
You must NOT plug a standard serial cable into that 9 pin AUX connector.
It is not RS-232 although there are 3 RS-232 signal lines in the
connector. The remaining signals are internal K2 signals that are used
with external Elecraft equipment like the KAT100, the KRC2 and the XV
The other day I got myself a GPS-disciplined frequency reference and
started going through
my rigs, calibrating them one by one.
When I came to my KX2 I quickly found that the reference frequency
oscillator calibration
procedure, as described in the manual, does not work. (To be really sure, I
Dave,
That is one failure mode of the headphone jack in the K2. There is a
little switch in the rear of the headphone jack that turns the speaker
on and off. The plastic operating arm for the switch has broken (inside
the jack).
The only way to fix it is to replace the headphone jack.
You
I have 2 remaining items I would like to sell: (please respond
off-list if interested)
N-GEN WIDEBAND NOISE GENERATOR -- BUILT $35 Shipped 1st class USPS
XG-1 SIGNAL GENERATOR -- built -- $35 Shipped 1st Class USPS
Thanks -- Doug -- KJ0F
doug (at) kj0f.com
Just for reference - this
On 1/9/19 at 8:05 AM, joseph.dur...@gmail.com (Joseph M. Durnal) wrote:
I think my only regret will be that I'll still need my separate FSK
interface, yeah yeah, AFSK, but if Elecraft didn't want us to use FSK, they
wouldn't have put it in the radio.
When I RTTY contest, I use a program that
Still more from the storage room:
Essentially brand-new MH3 microphone for the KX-line.
$50 Shipped 1st Class USPS CONUS
PayPal works best. (PayPal address dxvic...@gmail.com)
Please respond off-list.
--
73 de Doug -- KJ0F
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