KX3 KXUSB vs KXSER interface

[Bruce Beford-2]

The KX3 will ship with the KXUSB interface cable (USB) unless the buyer
specifies the KXSER (RS232) cable instead.

It has been stated that a module will be developed that will allow the KX3
to work to the P3.

In a fully integrated K3/P3 set, the P3 daisy-chains on the RS232 interface
to the host computer (for firmware updates, utility program use etc).

This raises the following questions:

Is the proposed KX3/P3 interface module going to include a data connection
between the P3 and the KX3? If so, how will this be accomplished? e.g. Will
there be a logic level cable to the KX3, and an RS232 connection to the P3?

If a KX3 purchaser gets the standard KXUSB cable, perhaps that could plug
into the second USB connector for communications? I would not expect so, as
the second connector is a USB type-b, an adapter would be needed.

I realize a lot is in flux right now. I am trying to determine if there is a
any real reason to get the RS232 type cable over the USB flavor for the KX3
if one is already using USB converters successfully with the K3/PS etc.

Another question from a home-brewer/tinkerer perspective- I already have an
FTDI based USB-TTL converter that terminates in a 3.5mm plug. Is the KXSER
cable a simple RS232/TTL level converter?

Perhaps it's too early to have full answers for these issues, but I thought
tossing them out there for the designers to mull over might help the
process.

73,
Bruce, N1RX




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[Val-12]

And one more question:

After KXUSB terminates in a 3.5mm plug, there is no place for DTR line. Then
how is arranged the CW keying by a computer?

73, Val LZ1VB

> The KX3 will ship with the KXUSB interface cable (USB) unless the buyer
> specifies the KXSER (RS232) cable instead.
>
> It has been stated that a module will be developed that will allow the KX3
> to work to the P3.
>
> In a fully integrated K3/P3 set, the P3 daisy-chains on the RS232
> interface
> to the host computer (for firmware updates, utility program use etc).
>
> This raises the following questions:
>
> Is the proposed KX3/P3 interface module going to include a data connection
> between the P3 and the KX3? If so, how will this be accomplished? e.g.
> Will
> there be a logic level cable to the KX3, and an RS232 connection to the
> P3?
>
> If a KX3 purchaser gets the standard KXUSB cable, perhaps that could plug
> into the second USB connector for communications? I would not expect so,
> as
> the second connector is a USB type-b, an adapter would be needed.
>
> I realize a lot is in flux right now. I am trying to determine if there is
> a
> any real reason to get the RS232 type cable over the USB flavor for the
> KX3
> if one is already using USB converters successfully with the K3/PS etc.
>
> Another question from a home-brewer/tinkerer perspective- I already have
> an
> FTDI based USB-TTL converter that terminates in a 3.5mm plug. Is the KXSER
> cable a simple RS232/TTL level converter?
>
> Perhaps it's too early to have full answers for these issues, but I
> thought
> tossing them out there for the designers to mull over might help the
> process.
>
> 73,
> Bruce, N1RX
>
>
>
>
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[doberman]

I think I read somewhere that the KX3 is/will be Bluetooth capable -
will there be recognition/provision of/for a wireless mini keyboard or
will there be some other way to plug a keyboard directly into the KX3?


Dan - KI4YZE
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[Bruce Beford-2]

I would think that whatever external keying device you are using would have
to connect via the KEY jack. This would be a contact closure (or the
equivalent) to ground, with the KEY jack in straight key mode, via the KX3
menu.73,
Bruce, N1RX

> After KXUSB terminates in a 3.5mm plug, there is no place for DTR line.
> Then how is arranged the CW keying by a computer?

> 73, Val LZ1VB


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[Bruce Beford-2]

Dan-
There are no plans (that I know of) for a Bluetooth interface for the KX3.
Some prospective users have asked about such, but Elecraft has no plans to
offer one. You could add a 3rd party Bluetooth interface for mic/speaker if
you wish. That would be up to you, however.

As for keyboard, there is no provision for a keyboard connection directly to
the KX3 (at this time/that I am aware of...) Perhaps a future option, but
that would be for Wayne to confirm/deny...

73,
Bruce, N1RX

> I think I read somewhere that the KX3 is/will be Bluetooth capable -
> will there be recognition/provision of/for a wireless mini keyboard or
> will there be some other way to plug a keyboard directly into the KX3?
>Dan - KI4YZE



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[Val-12]

Well, this means that KXUSB is unusable for CW operation. We will need
"full" USB adapter, carrying DTR line like KUSB, DB9 socket, than a
transistor key and two 3.5mm plugs - one for the KEY jack and one for the
COM port. How spoiled are we by K3, hi.

73, Val LZ1VB

>I would think that whatever external keying device you are using would have
> to connect via the KEY jack. This would be a contact closure (or the
> equivalent) to ground, with the KEY jack in straight key mode, via the KX3
> menu.73,
> Bruce, N1RX
>
>> After KXUSB terminates in a 3.5mm plug, there is no place for DTR line.
>> Then how is arranged the CW keying by a computer?
>
>> 73, Val LZ1VB
>
>
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[Mike Heitmann]

All the programming/CW/PTT cable discussions prompted me to pass along this tip
someone else gave me:
On  the recommendation of someone I met in Dayton this  year, I've made several
radio programming/CAT/CW/PTT cables using these devices:
http://www.ftdichip.com/Products/Cables/USBRS232.htm

They  terminate to bare wires so you can put whatever connector you need on  the
end. It's also easy to slip a copper braid over the wire for  shielding if that
is required. I've had no issues using them on Windows  or Linux.

Mouser sells them:
http://www.mouser.com/Search/m_ProductDetail.aspx?FTDI/USB-RS232-WE-1800-BT_50/&qs=D1/PMqvA100CRKe9cg4TXA==


This model is RS-232, but they have them with TTL an RS-422 as well if you have
a requirement for those interfaces.

I'm  using them for radio CAT/PTT/CW keying with my K2 and IC-706. The '706 CAT
cable is connected homebrewed CIV circuit covered  with black heat shrink
tubing. The PTT/CW keying cables are connected to homebrew single transistor
keying circuits specific for the radio it's intended for, also covered with heat
shrink tubing. It makes a nice, compact set of cables. I use a separate cable
for programming/CAT and keying/PTT.


Off topic a bit, but I also use these cables for radio programming and low speed
data with my D-STAR radios.

Mike Heitmann, N0SO
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[Eric Swartz - WA6HHQ]

hi dan,

Not at this time. We do not have Bluetooth inside the KX3.

73, Eric

Eric
---
www.elecraft.com


On 1/5/2012 11:39 AM, Dan Boardman wrote:
> I think I read somewhere that the KX3 is/will be Bluetooth capable -
> will there be recognition/provision of/for a wireless mini keyboard or
> will there be some other way to plug a keyboard directly into the KX3?
>
>
> Dan - KI4YZE
>
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