The AUTOINF (Tech mode) switch can have the K3(S) automatically
send frequency data on the RS-232 interface. The manual warns
that turning this on may not be compatible with all PC software,
but everything I run seems happy with it being on. With this on,
you don't need to have a program
I'm following up here with the verified solution to my issue.
To recap - When I used a KXSER cable to connect my KXPA/KX3 to my Ciro Mazzoni
Magloop antenna controller, that left no port available for me to control the
KX3 with RS232 using the program FLRig. The best solution I found was to use
Get an inexpensive RS-232 breakout box. The LEDs and jumpers will help you
see what is happening on the data and control lines and enable you to
make/verify any cable you need. Compact gender changers address the
male/female connector issue as well as the 25 pin/9 pin conversion. I
still have a
In broadcasting - we learned very quickly interfacing equipment with RS232,
that if it worked once it would continue to work.
Back in the beginning of using RS232 interfaces (cira. 70s) one of our the
engineers made a box with input/output pigtails in both male and female with
a rotary switch
I never really understood RS-232 until I read “Technical Aspects of Data
Communication” by John McNamara. Very clear. Not sure it is worth getting the
book just for that, but you might check a library.
https://smile.amazon.com/Technical-Aspects-Data-Communication-McNamara-ebook/dp/B01H5GQK78/
Bill,
No, DCE is Data Communications Equipment and that means Modem which does
connect to a phone line or other communications carrier medium.
DTE means Data Terminal Equipment and connects to a modem.
Those designations have been in place since 1960 or earlier.
73,
Don W3FPR
On 7/9/2018
I think the correct acronym expansion of DTE is "Data Carrier
Equipment". Remember, this whole area was designed by telephone
companies who thought they would be a part of every connection.
73 Bill AE6JV
On 7/9/18 at 10:20 AM, k6...@foothill.net (Fred Jensen) wrote:
The flaw is naming them
The flaw is naming them "transmit" and "receive." "DTE2DCE" and vice
versa might have been a better choice so many years ago. "Data
Terminal" and "Data Communications" were probably equally poor naming
choices, but it seemed so obvious then.
73,
Fred ["Skip"] K6DGW
Sparks NV DM09dn
Washoe
Back in the day, I worked for Tymshare, a time sharing company
(AKA early cloud computing). We used Bell 103 protocol modems to
provide full duplex connections for our users who were using
ASCII terminals, both CRT and teleprinter. They could type at
the same time the computer was sending
telephone line.
>>
>> As I remember it.
>>
>> Cheers,
>> Fred KE7X
>>
>>
>>
>>
>>
>> From: elecraft-boun...@mailman.qth.net
>> on behalf of Don Wilhelm
>> Sent: Sunday, July 8, 2018 10:0
> From: elecraft-boun...@mailman.qth.net
> on behalf of Don Wilhelm
> Sent: Sunday, July 8, 2018 10:04 PM
> To: elecraft@mailman.qth.net
> Subject: Re: [Elecraft] [KX3] RS232 xcvr control when serial ports are
> occupied
>
> The computer is the DTE device, and
Sent: Sunday, July 8, 2018 10:04 PM
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] [KX3] RS232 xcvr control when serial ports are occupied
The computer is the DTE device, and those devices designed to connect to
the computer via the serial port are normally wired as DCE devices.
The original
NDY DURBIN; elecraft@mailman.qth.net
Subject: Re: [Elecraft] [KX3] RS232 xcvr control when serial ports are occupied
Andy,
No TXD is TXD all the way through the path. Yes, the DTE TXD will have
the drivers, and the DCE will have receivers, but it is TXD from end to
end. RXD is the other way arou
PM
To: ANDY DURBIN; elecraft@mailman.qth.net
Subject: Re: [Elecraft] [KX3] RS232 xcvr control when serial ports are occupied
Andy,
No TXD is TXD all the way through the path. Yes, the DTE TXD will have
the drivers, and the DCE will have receivers, but it is TXD from end to
end. RXD is the other
"No, TXD is TXD all the way through the path. Yes, the DTE TXD will have the
drivers, and the DCE will have receivers, but it is TXD from end to end. RXD
is the other way around because the DCE drives that line. Transmit and receive
are named with respect to the DTE."
That's great when one
Andy,
No TXD is TXD all the way through the path. Yes, the DTE TXD will have
the drivers, and the DCE will have receivers, but it is TXD from end to
end. RXD is the other way around because the DCE drives that line.
Trsnsmit and receive are named with respect to the DTE.
73,
Don W3FPR
On
"TXD is really pin 3."
One end's TXD is the other end's RXD. That's obvious to those who have used
RS-233 for a while but if someone needs to ask then it may not be obvious. Find
the TXD pin on the source and connect it the RXD pin on the destination.
Sometimes it's easier to look with a
Sorry about the pin typo. Look at the cable link for the steppIR that
Dick K6KR sent and that will be obvious. I was looking at that diagram
when I typed my response, but did not proof it.
TXD is really pin 3.
73,
Don W3FPR
On 7/8/2018 7:24 PM, Stephen Rector wrote:
Don:
I tried a 3.5mm
Don:
I tried a 3.5mm Y-connector at the KXPA and this did not work. But based on
your feedback and also that of N6TV, I see that I have multiple TX drivers on
the TXD line. Even if there is no TX from the antenna controller, the
low-impedance of its TXD driver will load the line. Bob also
nt/uploads/2011/10/Y-Cable.pdf
>>
>> 73 de Dick, K6KR
>>
>>
>> -Original Message-
>> From: elecraft-boun...@mailman.qth.net On
>> Behalf Of Stephen Rector via Elecraft
>> Sent: Sunday, July 8, 2018 12:31
>> To: elecraft@mailman.qth.net
&g
Steve,
Yes, since you are using both the KXUSB and the KXSER cables, a "Y" at
the KXPA100 would serve you well.
If your magloop controller also attempts to transmit, you can remove the
connection to pin 2 on the DE9 end of the KXSER cable (just remove the
backshell and disconnect the wire).
y 8, 2018 12:31
> To: elecraft@mailman.qth.net
> Subject: [Elecraft] [KX3] RS232 xcvr control when serial ports are occupied
>
> Hy home station is a KX3 + KPXA100, and I can control the radio via the
> RS232 port on the KXPA. However, recently I added a Ciro Mazzoni magl
Hi Don:
Yes - it occurred to me after sending the post that I might be able to create
the split at the KXPA with a stereo Y-cable/connector. I am using a KXUSB to
the computer, with a KXSER cable going from the the antenna controller to the
KXPA. It is the KXUSB that presently has no place to
an.qth.net
Subject: [Elecraft] [KX3] RS232 xcvr control when serial ports are occupied
Hy home station is a KX3 + KPXA100, and I can control the radio via the
RS232 port on the KXPA. However, recently I added a Ciro Mazzoni magloop to
the station, and its controller plugs in to the KXPA serial por
Steve,
Are you using the KXUSB to connect with the KXPA100/KX3, or are you
using the KXSER with a real computer serial port or a USB to serial adapter?
Since your magloop controller only 'sniffs', it means it should only
listen and never try to transmit on the RS-232 signal lines. If it
"My first thought is that, since the antenna controller just sniffs for data, I
could add a DB-9 Y-cable to provide the extra port at the controller serial
port location. However, packets could still collide ...does the protocol handle
this? Is there some sort of multiplexer available?"
If
Hy home station is a KX3 + KPXA100, and I can control the radio via the RS232
port on the KXPA. However, recently I added a Ciro Mazzoni magloop to the
station, and its controller plugs in to the KXPA serial port to sniff for
frequency information, allowing re-tuning on the fly. This leaves no
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