On 7/15/2012 12:15 AM, Edward R. Cole wrote:
I rarely listen to the audio of digital signals since my brain cannot
decode them, anyway. With a 3.5mm phone plug inserted the internal
speaker is disconnected so I suppose you are using either headphones
or ext. speaker. No need to hear the
Thanks for all the comments and suggestions. I will continue to explore the
possibility of an ultra-compact solution by just breaking out cables from a DB9
connector. However, in the interest of time, my first interface will use the
RIGblaster Plug Play unit from West Mountain Radio.
This
Joe, W4TV, wrote:
The difficulty in dealing with a computer interface for the KX3 is
the last of a fixed level audio output and the need to share audio
with the operator headphones/speaker. Levels for computer decoding
and operator comfort are not always the same G which means a
buffer/splitter
On 7/12/2012 5:50 PM, Edward R. Cole wrote:
I deduced the surest way to avoid audio
problems was by total isolation of computer ground and radio
ground. East to accomplish using isolation transformers for audio
and opto-isolators for dc controls.
Actually it is NOT the surest way. Simple
On 7/12/2012 3:49 PM, Don Wilhelm wrote:
Jim's bond everything together is a great solution (and it works) for
the home station using a desktop computer, but bonding the computer
becomes more difficult when using laptops with all plastic cases. I
cannot find a good place to connect to the
, 2012 01:19:19 GMT+00:00
Subject: Re: [Elecraft] Digital Mode Interface for the KX3 for WSJT modes
Ed,
For use with the KX3, I would believe the audio generated PTT signal
such as shown in Skip Teller's interface at
https://sites.google.com/site/kh6tyinterface/ would be the preferred PTT
solution
Bill,
You may want to re-think using the serial port on your interface.
Most data mode applications like to use the same COM port for rig
control (OK, maybe just frequency display) as they use to activate DTR
or RTS for PTT.
Given that the KX3 supplied cables only have RXD and TXD signals,
Hi Don,
The advantage of using the RTS line to trigger the PTT is that some software -
notably WSJT - provides a high signal on the RTS line well in advance of the
start of
any audio tones. This allows those of use who are using amplifiers,
preamplifiers
and coaxial relays to avoid hot
I don't understand this response. Why would he need to use 2 serial
ports or Y adapters? He states that a full serial port will run from
computer to interface box, where the serial signals will be broken out
as required for PTT and CW. Presumably the KXSER rs-232 cable could
run between interface
Given that the KX3 supplied cables only have RXD and TXD signals,
using the serial port to generate PTT requires that either you use 2
serial ports (one may be the KX3 USB cable and the other can be a
real port or USB to Serial adapter), or provide a Y adapter to go
to your interface.
Or
What is missing is that the KXSER serial cable carries only wires for
TXD and RXD.
Furthermore, the backshell is molded, so you cannot open it and add the
wires.
To use PTT from RTS or DTE, you would have to use a regular serial cable
to your interface box, and then provide an outlet from that
Joe,
That will work, BUT neither the KXSER or KXUSB cables could be used -
they do not contain RTS or DTR signals.
73,
Don W3FPR
On 7/13/2012 12:30 PM, Joe Subich, W4TV wrote:
Given that the KX3 supplied cables only have RXD and TXD signals,
using the serial port to generate PTT requires
: [Elecraft] Digital Mode Interface for the KX3 for WSJT modes
Given that the KX3 supplied cables only have RXD and TXD signals,
using the serial port to generate PTT requires that either you use 2
serial ports (one may be the KX3 USB cable and the other can be a
real port or USB to Serial adapter
-
From: Don Wilhelm w3...@embarqmail.com
To: Bob Cunnings bob.cunni...@gmail.com
Cc: Elecraft Reflector elecraft@mailman.qth.net
Sent: Fri, Jul 13, 2012 18:05:11 GMT+00:00
Subject: Re: [Elecraft] Digital Mode Interface for the KX3 for WSJT modes
What is missing is that the KXSER serial cable carries
Subject: Re: [Elecraft] Digital Mode Interface for the KX3 for WSJT modes
Given that the KX3 supplied cables only have RXD and TXD signals,
using the serial port to generate PTT requires that either you use 2
serial ports (one may be the KX3 USB cable and the other can be a
real port or USB
Hi Gary,
If it is still available, I would be interested. PSE let me know, and I will
send
you cash tmrw by mail. VY 73, Lance
On 7/13/2012 3:12 AM, Gary K9GS [via Elecraft] wrote:
Or just buy one of these:
http://www.unifiedmicro.com/sci6.htm
Hard to beat for $25.00.
BTWI
Yes, I *know* that the KXSER serial cable carries only wires for TXD and RXD.
That's why I said that the KXSER cable would run between the KX3 and
the interface box.
As the original message stated, a *full* serial port would run from
the computer to the interface box, where PTT and CW would be
Sorry Bob,
I did not mean to ignore your initial offerings, but there were others
chiming in with information that simply would not work, and assumptions
that the KXUSB cable could provide PTT via RTS or DTR.
The folks at Elecraft support have also been asked questions about RTS
or DTR PTT
Lance,
Still on my to-dolist, but today is devoted to finishing my
semi-annual shack clean-up and working up a presentation to demo the
KX3 this Saturday at our local hamfest (which I am chairman). Oh,
and somehow dig out all the stuff I wanted to unload at the
flea-market session. Only
Ed, Lance,
I have constructed my digital interface, but have not tried it yet.
The basis was the interface designed by Skip Teller KH6TY Classic
Universal Soundcard Interface from QST July 2010. That interface is
small and fits into the housing of a large DB-9 backshell.
I purchased some 3
https://sites.google.com/site/kh6tyinterface/
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net
This list hosted by:
Thanks, yes that is the one that produces the PTT from the audio stream.
I note that Skip no longer has kits and boards, but he has supplied a
complete parts list and the circuit is simple enough to wire on
perfboard. The photos provide a nice layout guide.
Contrary to K9YC's statements, I
Don,
After making several sound-card interfaces (never have used a
commercially made one), I deduced the surest way to avoid audio
problems was by total isolation of computer ground and radio
ground. East to accomplish using isolation transformers for audio
and opto-isolators for dc
Ed,
For use with the KX3, I would believe the audio generated PTT signal
such as shown in Skip Teller's interface at
https://sites.google.com/site/kh6tyinterface/ would be the preferred PTT
solution.
My reason is that the KX3 USB data cable includes only TXD and RXD. If
you use RTS or DTR
Or just buy one of these:
http://www.unifiedmicro.com/sci6.htm
Hard to beat for $25.00.
BTWI have a brand new one for sale, already assembled, never used.
Will sell for $20.00 including shipping to the lower 48 states. Note
this is NOT set up for the KX3...strictly stock using the
I am still waiting for my KX3, but I imagine with over 600 of them out in the
field,
SOMEBODY must have experimented with an interface for running WSJT modes. I
will
need to build up the custom interface cables as soon as my KX3 eventually
arrives,
and I won't have much time left to
On 7/11/2012 9:48 AM, Lance Collister, W7GJ wrote:
I am planning to connect the computer LINE OUT to the tip and sleeve of the
KX3 MIC
jack. However, in K9YC's interface manual, he suggests, putting a 4700 ohm
resistor
in series with the tip, and putting a 470 ohm resistor from tip to
27 matches
Mail list logo
