Elecraft

FSK-D wiring

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Jim AB3CV

FSK-D wiring

The recent FSK-D firmware update has me considering wiring up for that
approach vs my current AFSK approach. Since I don't do RTTY that often I'm
looking at FSK-D as a potential screw-up preventer.

Since I already have a Y-cable to send band info to my RCS-12 and the rest
of the K-line on the other half of the Y, I'm considering just getting a
second Y cable and dedicate it to the FSK/PTT signals coming from a
dedicated USB serial cable.

This is turning into a real jumble of cables but I don't see any cleaner
way of dealing with it. I'm planning to put the transistor/level shifters
in a gender changer shell in between the USB RS232 connector and the Y
cable.

Anyone have anything cleaner? The electrical part is easy for me. I'm
trying to minimize mess/clutter.

Thanks

Jim ab3cv
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Ed Muns, W0YK

Re: FSK-D wiring

This is the approach I have used since K3 Field Test. I just keep adding
Y-adapters as needed. Another variation I've used is to build specific
Y-cables. For example, I have some homebrew cables that have two cables
coming out of the DB15 plugged into the K3 ACC jack. One goes to a DB9 for
a KRC2 and the other goes to a DB9 for a PC Com port for FSK/PTT.

Another approach some people like is to make a break-out box with RCA Phono
jacks for each of the signals on the K3 ACC jack. The box is connected via
a single DB15 cable.

I prefer the multiple Y-adapter scheme because it is modular and individual
functional cables can be swapped in and out both for easy configuration of
any system as well as easy troubleshooting. It is about as neat a "cable
mess" as can be had without making a specific special cable for just one
configuration.

Ed W0YK

Jim AB3CV wrote:

> The recent FSK-D firmware update has me considering wiring up
> for that approach vs my current AFSK approach. Since I don't
> do RTTY that often I'm looking at FSK-D as a potential
> screw-up preventer.
>
> Since I already have a Y-cable to send band info to my RCS-12
> and the rest of the K-line on the other half of the Y, I'm
> considering just getting a second Y cable and dedicate it to
> the FSK/PTT signals coming from a dedicated USB serial cable.
>
> This is turning into a real jumble of cables but I don't see
> any cleaner way of dealing with it. I'm planning to put the
> transistor/level shifters in a gender changer shell in
> between the USB RS232 connector and the Y cable.
>
> Anyone have anything cleaner? The electrical part is easy for
> me. I'm trying to minimize mess/clutter.

Cady, Fred

Re: FSK-D wiring

Winford engineering makes some nice breakout boards.

http://www.winfordeng.com/products/

-----Original Message-----
From: [hidden email] [mailto:[hidden email]] On Behalf Of Ed Muns
Sent: Wednesday, March 27, 2013 9:53 PM
To: 'Elecraft Reflector'
Subject: Re: [Elecraft] FSK-D wiring

This is the approach I have used since K3 Field Test. I just keep adding Y-adapters as needed. Another variation I've used is to build specific Y-cables. For example, I have some homebrew cables that have two cables coming out of the DB15 plugged into the K3 ACC jack. One goes to a DB9 for a KRC2 and the other goes to a DB9 for a PC Com port for FSK/PTT.

Another approach some people like is to make a break-out box with RCA Phono jacks for each of the signals on the K3 ACC jack. The box is connected via a single DB15 cable.

I prefer the multiple Y-adapter scheme because it is modular and individual functional cables can be swapped in and out both for easy configuration of any system as well as easy troubleshooting. It is about as neat a "cable mess" as can be had without making a specific special cable for just one configuration.

Ed W0YK

Jim AB3CV wrote:

> The recent FSK-D firmware update has me considering wiring up for that
> approach vs my current AFSK approach. Since I don't do RTTY that often
> I'm looking at FSK-D as a potential screw-up preventer.
>
> Since I already have a Y-cable to send band info to my RCS-12 and the
> rest of the K-line on the other half of the Y, I'm considering just
> getting a second Y cable and dedicate it to the FSK/PTT signals coming
> from a dedicated USB serial cable.
>
> This is turning into a real jumble of cables but I don't see any
> cleaner way of dealing with it. I'm planning to put the
> transistor/level shifters in a gender changer shell in between the USB
> RS232 connector and the Y cable.
>
> Anyone have anything cleaner? The electrical part is easy for me. I'm
> trying to minimize mess/clutter.

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Jim Rhodes-2

Re: FSK-D wiring

In reply to this post by Jim AB3CV

I built my current interface into a small Bud box. I mounted 2 db15hd
connectors (1 male, 1 female) on one side of the box, wired straight
through via the pc board (a standard breadboard type) and the db9 for the
fsk/ptt on the other side. Now I see where I messed up. Since I will be
adding another circuit to it for SO2V RTTY operation I will parallel an
additional 2 or 3 db15hd connectors so that I can do away with the rats
nest of Y-connectors and just connect cables to my own break-out box. Life
is a learning process.

On Wed, Mar 27, 2013 at 9:35 PM, Jim Miller <[hidden email]> wrote:

> The recent FSK-D firmware update has me considering wiring up for that
> approach vs my current AFSK approach. Since I don't do RTTY that often I'm
> looking at FSK-D as a potential screw-up preventer.
>
> Since I already have a Y-cable to send band info to my RCS-12 and the rest
> of the K-line on the other half of the Y, I'm considering just getting a
> second Y cable and dedicate it to the FSK/PTT signals coming from a
> dedicated USB serial cable.
>
> This is turning into a real jumble of cables but I don't see any cleaner
> way of dealing with it. I'm planning to put the transistor/level shifters
> in a gender changer shell in between the USB RS232 connector and the Y
> cable.
>
> Anyone have anything cleaner? The electrical part is easy for me. I'm
> trying to minimize mess/clutter.
>
> Thanks
>
> Jim ab3cv
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:[hidden email]
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
>

--
Jim K0XU
[hidden email]
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Gary K9GS

Re: FSK-D wiring

In reply to this post by Cady, Fred

Can't beat the price either....

On 3/28/2013 8:31 AM, Cady, Fred wrote:

> Winford engineering makes some nice breakout boards.
>
> http://www.winfordeng.com/products/
>
>
>
> -----Original Message-----
> From: [hidden email] [mailto:[hidden email]] On Behalf Of Ed Muns
> Sent: Wednesday, March 27, 2013 9:53 PM
> To: 'Elecraft Reflector'
> Subject: Re: [Elecraft] FSK-D wiring
>
> This is the approach I have used since K3 Field Test. I just keep adding Y-adapters as needed. Another variation I've used is to build specific Y-cables. For example, I have some homebrew cables that have two cables coming out of the DB15 plugged into the K3 ACC jack. One goes to a DB9 for a KRC2 and the other goes to a DB9 for a PC Com port for FSK/PTT.
>
> Another approach some people like is to make a break-out box with RCA Phono jacks for each of the signals on the K3 ACC jack. The box is connected via a single DB15 cable.
>
> I prefer the multiple Y-adapter scheme because it is modular and individual functional cables can be swapped in and out both for easy configuration of any system as well as easy troubleshooting. It is about as neat a "cable mess" as can be had without making a specific special cable for just one configuration.
>
> Ed W0YK
>
>
> Jim AB3CV wrote:
>> The recent FSK-D firmware update has me considering wiring up for that
>> approach vs my current AFSK approach. Since I don't do RTTY that often
>> I'm looking at FSK-D as a potential screw-up preventer.
>>
>> Since I already have a Y-cable to send band info to my RCS-12 and the
>> rest of the K-line on the other half of the Y, I'm considering just
>> getting a second Y cable and dedicate it to the FSK/PTT signals coming
>> from a dedicated USB serial cable.
>>
>> This is turning into a real jumble of cables but I don't see any
>> cleaner way of dealing with it. I'm planning to put the
>> transistor/level shifters in a gender changer shell in between the USB
>> RS232 connector and the Y cable.
>>
>> Anyone have anything cleaner? The electrical part is easy for me. I'm
>> trying to minimize mess/clutter.
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:[hidden email]
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:[hidden email]
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
>

--

73,

Gary K9GS

Greater Milwaukee DX Association: http://www.gmdxa.org
Society of Midwest Contesters: http://www.w9smc.com
CW Ops #1032 http://www.cwops.org

************************************************

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