Curt,
Most any interface box will work with the K2 if you use the headphone
output and mic input - even homebrew. PTT can be derived from a USB to
serial adapter and a "one transistor keying" circuit. Take a look at
my website www.w3fpr.com for the K2 Fixed Audio Output article and the
Swi
At 07:49 AM 11/21/2013, you wrote:
For some reason I've become interested in trying PSK31 with my
K2/10. Receive works well, but haven't tried transmitting yet
because my laptop has only USB connectors. Before buying an
interface, would appreciate knowing whether others have had success
with
et
Subject: Re: [Elecraft] [K2]PSK31 QRP?
Curt,
Most any interface box will work with the K2 if you use the headphone output
and mic input - even homebrew. PTT can be derived from a USB to
serial adapter and a "one transistor keying" circuit. Take a look at
my website www.w3fpr.
For some reason I've become interested in trying PSK31 with my K2/10.
Receive works well, but haven't tried transmitting yet because my laptop has
only USB connectors. Before buying an interface, would appreciate knowing
whether others have had success with QRP level PSK31. Which interfaces pl
On 11/27/2012 3:30 PM, Tom McCulloch wrote:
>I have a very old Rig Blaster interface that uses jumpers to match
> the transceiver's microphone to the Rig Blaster outputs. The
> instructions are quite old and they don't list the jumper configuration
> for Elecraft rigs. I seem to remember
Tom.
You either have the microphone configuration header that was indtalled
as a part of the KSB2 option or you do not have the KSB2 option installed.
All properly constructed K2s with the KSB2 optionl 9 will have that
Microphone Configuration Header on the Front Panel Board. It is not a
c
Thhanks Bruce -- I think I have an older K2 (s/n 1103) that doesn't have
the jumpers - The jumpers are a good idea, it good to see they've
incorporated them
Tnx
Tom
wb2qdg
k2 1103
On 11/27/2012 6:49 PM, Bruce Beford wrote:
The K2 has internal jumpers for the mic jack configuration. This allow
The K2 has internal jumpers for the mic jack configuration. This allowed for
the use of almost any microphone. I suggest you open yours to see how it is
wired. Refer to the manual for the layout of the configuration header.
73,
Bruce, N1RX
> I seem to remember that the K2 mic jack is
> configure
Hello Tom
I run the K2 and psk31. It's fun, just remember set your power low. 5 watts
on k2/10 . As far as the mic, I am not sure.
Good luck hope to see you on the waterfall.
KC6CNN
On Nov 27, 2012 5:30 PM, "Tom McCulloch" wrote:
>
> Hi gang,
> I have a very old Rig Blaster interface that uses
Hi gang,
I have a very old Rig Blaster interface that uses jumpers to match
the transceiver's microphone to the Rig Blaster outputs. The
instructions are quite old and they don't list the jumper configuration
for Elecraft rigs. I seem to remember that the K2 mic jack is
configured the sa
On 5/22/2009 10:02 AM, John Chance-Read wrote:
> I note many are using K3 for PSK 31 but I've got a K2 so I guess
> for K2 owners this is all history
> I shall stick with CW Skimmer for morse and probably DigiPan for
> PSK31. I have a suitable computer
> K2 owner that have used these combination
John,
If you follow the advice of Jim Brown K9YC about using twisted pair
cable and bonding the computer and the K2 (see his reflector posts on
related subjects), you may not need any interface at all. You will need
some type of attenuator between the Line out and the K2 microphone AF
input -
I use microHAM's USB Interface II. It works well with my K2.
73! Ken Kopp - K0PP
elecraftcov...@rfwave.net
http://tinyurl.com/7lm3m5
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Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http:/
Thanks to every one who responded to my last request.
I note many are using K3 for PSK 31 but I've got a K2 so I guess for K2 owners
this is all history
I shall stick with CW Skimmer for morse and probably DigiPan for PSK31.
I have a suitable computer
K2 owner that have used these combinations
Ken Kirkley/NO4D wrote:
>
> In order to transmit PSK31 on the K2 do I have to have the RS232 adaptor?
> I am receiving the signals via the earphone output but now I want to
> transmit also! Always something…
>
No you don't. The KIO2 adds no essential functionality for transceiving data
modes, t
In order to transmit PSK31 on the K2 do I have to have the RS232 adaptor? I
am receiving the signals via the earphone output but now I want to transmit
also! Always something…
Ken/NO4D
--
View this message in context:
http://www.nabble.com/K2---PSK31-tp15885415p15885415.html
Sent from the El
The transformer is to break the ground loop of having the computer ground
connected to the RF chassis ground of the radio and producing possible
ground loop currents. In that case, you defeat the transformer if you
connect the computer case to radio case.
The computer case ground should be the
If you disconnect the ground connection to the average PC, the chassis
will sit at half supply potential above ground.
That's potentially 120V between your computer and radio, more than
enough to damage the radio.
Jim Harris wrote:
Someone mentioned about floating, that is
disconnecting, the
There has been discussion here about breaking the
ground loop between your computer and K2. Radio Shack
isolation transformers work well as was previously
mentioned.
Not mentioned was the PTT from the computer. It your
RS232 (com) port is connected to your K2 for PTT then
you have the potentia
Paul,
Connecting all your equipment to a common ground is NOT a mistake. Whether
you still have to use isolation transformers in the computer audio lines or
not depends on your particular computer - the audio return path is to the
motherboard instead of the computer chassis, so whether or not it
Conventional wisdom seems to be always use an isolation transformer in the
PSK-31 output to your mike input. I think most also agree it best to use
one in your PSK-31 input from your rigs audio out. Several of the
commercial kits/units do not do the latter. I have tried it with and
without and n
The posts on this topic mention an isolation transformer to
"separate" the computer from the PSK audio line. So I might have
missed the boat a little when I decided to ground the computer
chassis/case to the common equipment ground. That is, I have a ground
rod with a wire coming up to a copper
Thanks, Don.
I picked up two audio ground loop isolators from Radio Shack last week
when I wanted to recalibrate my filters using Spectrogram. I figured
if I needed one for audio to the computer, I'd probably need on for
audio out as well.
The isolator worked very well with Spectrogram; it remove
High Mark,
The 5.6k resister came with the microphone and instructions to install
it and how to set the jumpers.
You provided the key word here, 'electret'. I'd seen the word before,
but had thought it was a branding term rather than a functional term.
I just did a google search and now I know w
I would suggest leaving the resistor in place because your microphone needs
it -- it provides power to the electret element in the mic.
You could put a capacitor in series with the audio to the K2 to provide DC
isolation. Somewhere between 0.1 uf and 1 uf would seem like the proper
range for the
I'm using Ham Radio Deluxe/PSK31 Deluxe software which handles the
PTT, but I still need to connect from the sound card to the K2's
microphone jack.
I have the Proset-K2 headset that has an 8 pin adapter that accepts
the monophonic Proset-K2 microphone plug. I would like to use an
audio ground lo
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