K3 Non-Standard RS232 Interface?

[Phil Salas]

The RS-232 connector on the K3 will be the opposite sex of Kenwood & Yaesu,
which use a male DB9 connector on the radio.  I don't know what sex TenTec
uses.  Comments?
 
Phil - AD5X

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[Ed Muns, W0YK]

> The RS-232 connector on the K3 will be the opposite sex of
> Kenwood & Yaesu, which use a male DB9 connector on the radio.
>  I don't know what sex TenTec uses.  Comments?

The RS232 connector on the K3 rear panel has nine pins inside its shell.
The mating connector that plugs into it has nine corresponding sockets
inside its shell.  Depending on whether you base the connector gender on the
pins/sockets or the shell geometry that contains them, you might call the
same connector either "male" or "female".  That's why some engineers prefer
to use pins and sockets terminology rather than gender.  In any case, the
RS232 DE-9P connector on the K3 has nine pins inside its shell, which is the
same as other radios.  The Accessory DE-15S connector on the K3 has fifteen
sockets inside its shell.

73,
Ed - W0YK

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[KK7P]

> The RS-232 connector on the K3 will be the opposite sex of Kenwood & Yaesu,
> which use a male DB9 connector on the radio.

A male connector on the device implies wiring as Data Terminal Equipment
(DTE) such as the serial port on a PC.

A female connector on the device implies wiring as Data Communications
Equipment (DCE) such as a telephone modem (remember those? :-)

In general, if the sex of the connectors of the two devices you are
interconnecting is the same, a "null modem" cable (swaps various pin
pairs) is implied.  If the sex is opposite, a straight-through cable is
implied.

The K3 uses a standard, straight-through, male-to-female cable.  Its
DE-9 connector is wired as DCE.

73,

Lyle KK7P

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[Thom LaCosta]

On Wed, 29 Aug 2007, Phil & Debbie Salas wrote:

> The RS-232 connector on the K3 will be the opposite sex of Kenwood & Yaesu,
> which use a male DB9 connector on the radio.

I always figured that the female connector was on the chasis....But I'm hard
pressed to see how it makes much difference....unless of course one wants to
have one cable to fit all radios.

As there is a thriving bnc to bannana post adapter market, I guess we can look
forward to official QRP sex change adapters on EBAY.

Thom,EIEIO
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[Thom LaCosta]

On Wed, 29 Aug 2007, Lyle Johnson wrote:

> The K3 uses a standard, straight-through, male-to-female cable.  Its DE-9
> connector is wired as DCE.

Now wait a sec....standard or not....I am looking at the business end of the
usb to serial do dad I have....I see a bunch of pins inside the shell...So I
think the whatcha-call-it that plugs into that is a female end....so, If I got
that part right....what do I really need on the end that plugs into the the K3,
a whatca-call-it with pins, or a whatcha-callit with places for pins to
stick in to?

73 - k3hrn
Thom,EIEIO
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[Ed Muns, W0YK]

I apologize for an error in my recent posting below.  The RS232 connector on
the K3 has nine SOCKETS inside its shell, not PINS as I originally
mis-typed.

73,
Ed - W0YK

> -----Original Message-----
> From: [hidden email]
> [mailto:[hidden email]] On Behalf Of Ed Muns
> Sent: Wednesday, 29 August, 2007 11:09
> To: 'Phil & Debbie Salas'
> Cc: [hidden email]
> Subject: RE: [Elecraft] K3 Non-Standard RS232 Interface?
>
> > The RS-232 connector on the K3 will be the opposite sex of
> Kenwood &
> > Yaesu, which use a male DB9 connector on the radio.
> >  I don't know what sex TenTec uses.  Comments?
>
> The RS232 connector on the K3 rear panel has nine pins inside
> its shell.
> The mating connector that plugs into it has nine
> corresponding sockets inside its shell.  Depending on whether
> you base the connector gender on the pins/sockets or the
> shell geometry that contains them, you might call the same
> connector either "male" or "female".  That's why some
> engineers prefer to use pins and sockets terminology rather
> than gender.  In any case, the
> RS232 DE-9P connector on the K3 has nine pins inside its
> shell, which is the same as other radios.  The Accessory
> DE-15S connector on the K3 has fifteen sockets inside its shell.
>
> 73,
> Ed - W0YK
>
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[Tom Hammond-2]

Maybe I described it incorrectly.... at least that's what my good friend Ed,
W0YK tells me.

Both the 9-pin and the 15-pin connectors ON the back of the K3 will ACCEPT
a mating plug which contains the PINS. The socket on the K3 has the holes,
the plug, the pins.

I'll leave it up to everyone to determine which is male and which is female.
I thought (with three kids) I already knew, but I'm now having my doubts...

If I could post it here (no attachments permitted), I'd attach an image of
the connectors, but I will be tickled to SEND the image to anyone who asks.

If you have any questions, visit the following link to Mouser Electronics:

    http://www.mouser.com/catalog/631/1079.pdf

On this page, all along the right column, you will see numerous illustrations
of MALE vs FEMALE data connectors... draw your own conclusion.

73,

Tom

At 12:43 08/29/2007, Phil & Debbie Salas wrote:

>The RS-232 connector on the K3 will be the opposite sex of Kenwood & Yaesu,
>which use a male DB9 connector on the radio.  I don't know what sex TenTec
>uses.  Comments?
>
>Phil - AD5X
>
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>
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