K3 - remote control head

[Bill Clarke]

Will the "mini" be able to perform the same job the control head on a
Kenwood 480 does? Put the radio on a back shelf and only have a 2" deep
control panel to drag around the desk? Maybe a blank panel cover for the
K3 and a remote kit that will provide for this?

There are days when I am not feeling too sparky and I use my 480 because
I can drag the control panel over to my recliner and put it on a TV
tray. Life would be great if I could do the same with the K3.

Thanks,

Bill W2BLC


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[alsopb]

How about a detachable P3 display?  The box takes up way too much space.

73 de Brian/K3KO

On 4/29/2013 14:51, Bill wrote:

> Will the "mini" be able to perform the same job the control head on a
> Kenwood 480 does? Put the radio on a back shelf and only have a 2" deep
> control panel to drag around the desk? Maybe a blank panel cover for the
> K3 and a remote kit that will provide for this?
>
> There are days when I am not feeling too sparky and I use my 480 because
> I can drag the control panel over to my recliner and put it on a TV
> tray. Life would be great if I could do the same with the K3.
>
> Thanks,
>
> Bill W2BLC
>
>
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[Bill Frantz]

I call that the SVGA option. :-) Of course, my display is a lot
larger than the P3, but it is better located so I almost never
look at the P3. Field day will be different of course.

Cheers - Bill, AE6JV

On 4/29/13 at 8:41 AM, [hidden email] (Brian Alsop) wrote:

>How about a detachable P3 display?  The box takes up way too much space.

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[Josh Fiden]

Armchair copy OM!

73,
Josh W6XU


On 4/29/2013 7:51 AM, Bill wrote:
> I can drag the control panel over to my recliner and put it on a TV tray.

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[Iain MacDonnell - N6ML-2]

On Mon, Apr 29, 2013 at 7:51 AM, Bill <[hidden email]> wrote:
> Will the "mini" be able to perform the same job the control head on a
> Kenwood 480 does? Put the radio on a back shelf and only have a 2" deep
> control panel to drag around the desk? Maybe a blank panel cover for the K3
> and a remote kit that will provide for this?
>
> There are days when I am not feeling too sparky and I use my 480 because I
> can drag the control panel over to my recliner and put it on a TV tray. Life
> would be great if I could do the same with the K3.

I'm not familiar with the details of the K3/0 mini, so the following
is *speculation*....

The K3/0 should allow you to control a K3 over a RS232 connection,
which could be a fairly long cable (up to 50 feet, perhaps?), but it
will not get audio (RX or TX), keying (PTT or CW) or DC power over the
RS232 cable, so you would have to handle those separately (more long
cables, and probably a wall-wart by the recliner).

I doubt that there will ever be a blank front-panel option for the K3.
The K3/0 (mini) does not replace the functionality of the "real" front
panel. I suppose there could be a version with no
display/buttons/knobs, but it seems unlikely that that would be worth
the development effort...

73,

    ~iain / N6ML
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[Eric Swartz - WA6HHQ]

Yes.

Eric
elecraft.com

On 4/29/2013 9:56 AM, iain macdonnell - N6ML wrote:

> On Mon, Apr 29, 2013 at 7:51 AM, Bill <[hidden email]> wrote:
>> Will the "mini" be able to perform the same job the control head on a
>> Kenwood 480 does? Put the radio on a back shelf and only have a 2" deep
>> control panel to drag around the desk? Maybe a blank panel cover for the K3
>> and a remote kit that will provide for this?
>>
>> There are days when I am not feeling too sparky and I use my 480 because I
>> can drag the control panel over to my recliner and put it on a TV tray. Life
>> would be great if I could do the same with the K3.
> I'm not familiar with the details of the K3/0 mini, so the following
> is *speculation*....
>
> The K3/0 should allow you to control a K3 over a RS232 connection,
> which could be a fairly long cable (up to 50 feet, perhaps?), but it
> will not get audio (RX or TX), keying (PTT or CW) or DC power over the
> RS232 cable, so you would have to handle those separately (more long
> cables, and probably a wall-wart by the recliner).
>
> I doubt that there will ever be a blank front-panel option for the K3.
> The K3/0 (mini) does not replace the functionality of the "real" front
> panel. I suppose there could be a version with no
> display/buttons/knobs, but it seems unlikely that that would be worth
> the development effort...
>
> 73,
>
>      ~iain / N6ML
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
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>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html

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[Jim Brown-10]

:
> The K3/0 should allow you to control a K3 over a RS232 connection,
> which could be a fairly long cable (up to 50 feet, perhaps?),

Another very useful fact -- RS232 uses an unbalanced connection, and the
connection is NOT impedance-matched.  That is, the source has a low
source impedance and the receiver has a high input impedance, so the
interconnecting cable appears as a capacitive load to the driving
source. A decade or so ago, we often used RS232 for the connection
between a computer in the audience in a large performance space to
signal processing equipment buried in the bowels of the building. We
were able to reliably use runs on the order of 200 ft at decent speeds
by using CAT5 cable for the connection, using a pair for each signalling
circuit, by dedicating all un-used conductors to the return, and
connecting the returns to the SHELL of the DB9 connectors at both ends.
It works because CAT5 cable has good bandwidth AND low capacitance
between the conductors of a pair, the twisted pair rejects noise,
connecting to the shells at both ends gets around Pin One Problems that
may be present, and doubling up on the return conductors minimizes the
IR drop from AC power leakage currents that may be present because the
equipment is powered (and perhaps grounded) at widely separated points.

Another method to consider for longer runs is RS422, the BALANCED
configuration of the serial interface.  A very good company in Illinois
called B&B makes very nice, fairly inexpensive RS232 to RS422
converters.
http://www.bb-elec.com/Learning-Center/All-White-Papers/White-Papers-Category1/232_422-Converter-Connections-for-Extending-RS-232.aspx

73, Jim K9YC
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