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David Walsh

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Jerry Moore

Re: test

Pass

Sent via the Samsung GALAXY S® 5, an AT&T 4G LTE smartphone

-------- Original message --------
From: David Walsh <[hidden email]>
Date: 10/8/16 11:54 (GMT-05:00)
To: [hidden email]
Subject: [Elecraft] test

test
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G4BVY

Interlocking two K3

In reply to this post by David Walsh

Hi All
I don't like re-inventing the wheel, so I'm looking for a design to
copy!
I'm looking for a circuit to interlock two K3 so they cannot transmit
simultaneously. I am aware of the simple connection cross linking the
PTT out and Inbibit input on the 15 pin connector. That does not meet
our needs as when both try to transmit - both are inhibited !!

TIA
Roger - G4BVY
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Val-12

Re: Interlocking two K3

Roger,

Check ACOM 2S1.

73, Val LZ1VB

> Hi All
> I don't like re-inventing the wheel, so I'm looking for a design to
> copy!
> I'm looking for a circuit to interlock two K3 so they cannot
> transmit simultaneously. I am aware of the simple connection cross
> linking the PTT out and Inbibit input on the 15 pin connector. That
> does not meet our needs as when both try to transmit - both are
> inhibited !!
>
> TIA
> Roger - G4BVY
> ______________________________________________________________
> 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
> Message delivered to [hidden email]
>

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charlie carroll

Re: Interlocking two K3

In reply to this post by G4BVY

Roger:
Look at:

http://www.kkn.net/~n6tv/SimpleElecraftK3SO2RLockoutCircuit.pdf

I belive it's different than the one you described in your email. I've
used this one successfully.

73 charlie, k1xx

On 10/8/2016 12:59 PM, irdixon+lists wrote:

> Hi All
> I don't like re-inventing the wheel, so I'm looking for a design to copy!
> I'm looking for a circuit to interlock two K3 so they cannot transmit
> simultaneously. I am aware of the simple connection cross linking the
> PTT out and Inbibit input on the 15 pin connector. That does not meet
> our needs as when both try to transmit - both are inhibited !!
>
> TIA
> Roger - G4BVY
> ______________________________________________________________
> 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
> Message delivered to [hidden email]
>

Val-12

Re: Interlocking two K3

Charlie, how this could work after there is no way the TX Inh inputs
to be pulled down?

73, Val LZ1VB

> Roger:
> Look at:
>
> http://www.kkn.net/~n6tv/SimpleElecraftK3SO2RLockoutCircuit.pdf
>
> I belive it's different than the one you described in your email.
> I've
> used this one successfully.
>
> 73 charlie, k1xx
>
> On 10/8/2016 12:59 PM, irdixon+lists wrote:
>> Hi All
>> I don't like re-inventing the wheel, so I'm looking for a design to
>> copy!
>> I'm looking for a circuit to interlock two K3 so they cannot
>> transmit
>> simultaneously. I am aware of the simple connection cross linking
>> the
>> PTT out and Inbibit input on the 15 pin connector. That does not
>> meet
>> our needs as when both try to transmit - both are inhibited !!
>>
>> TIA
>> Roger - G4BVY

Joe Subich, W4TV-4

Re: Interlocking two K3

The Key Out (LP) lines pull the TX Inh inputs low when transmitting.
However, this is the "simple cross connection" that will result in
neither transceiver transmitting if both try to transmit.

73,

... Joe, W4TV

On 10/9/2016 2:16 AM, Val wrote:

> Charlie, how this could work after there is no way the TX Inh inputs to
> be pulled down?
>
> 73, Val LZ1VB
>
>> Roger:
>> Look at:
>>
>> http://www.kkn.net/~n6tv/SimpleElecraftK3SO2RLockoutCircuit.pdf
>>
>> I belive it's different than the one you described in your email. I've
>> used this one successfully.
>>
>> 73 charlie, k1xx
>>
>> On 10/8/2016 12:59 PM, irdixon+lists wrote:
>>> Hi All
>>> I don't like re-inventing the wheel, so I'm looking for a design to
>>> copy!
>>> I'm looking for a circuit to interlock two K3 so they cannot transmit
>>> simultaneously. I am aware of the simple connection cross linking the
>>> PTT out and Inbibit input on the 15 pin connector. That does not meet
>>> our needs as when both try to transmit - both are inhibited !!
>>>
>>> TIA
>>> Roger - G4BVY
>

Don Wilhelm

Re: Interlocking two K3

In reply to this post by G4BVY

The time that the lockout of both transmitter is quite short, in
milliseconds, so the solution to that problem is for the first operator
to recognize that condition is to stop and then start again.
It should not happen frequently.

73,
Don W3FPR

On 10/8/2016 12:59 PM, irdixon+lists wrote:
> Hi All
> I don't like re-inventing the wheel, so I'm looking for a design to copy!
> I'm looking for a circuit to interlock two K3 so they cannot transmit
> simultaneously. I am aware of the simple connection cross linking the
> PTT out and Inbibit input on the 15 pin connector. That does not meet
> our needs as when both try to transmit - both are inhibited !!
>
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Edward R Cole

Re: Interlocking two K3

In reply to this post by G4BVY

The simple fix is to move the 470-ohm resistors to be inserted
between pin-1 and Pin-7. The resistor is used to limit current draw
when pin-7 is grounded (inhibiting Tx). With pin-10 directly
connected to pin-7, pin-7 will go directly to low when pin-10 does.

If you want a little more insurance that current goes the correct
direction add a diode pointing toward pin-10 from pin-7.

I am using inhibit with my station sequencer (except with the
opposite logic: INH=HI):
http://www.kl7uw.com/TX-INHIBIT.htm
also added a little more band logic for use with transverters and
disables inhibit with HF.

73, Ed - KL7UW

-----------------
From: "Val" <[hidden email]>
To: <[hidden email]>
Subject: Re: [Elecraft] Interlocking two K3
Message-ID: <835760C8560A48D18E811EB243F91E3E@OFFICE>
Content-Type: text/plain; format=flowed; charset="iso-8859-1";
reply-type=original

Charlie, how this could work after there is no way the TX Inh inputs
to be pulled down?

73, Val LZ1VB

> Roger:
> Look at:
>
> http://www.kkn.net/~n6tv/SimpleElecraftK3SO2RLockoutCircuit.pdf
>
> I belive it's different than the one you described in your email.
> I've
> used this one successfully.
>
> 73 charlie, k1xx

73, Ed - KL7UW
http://www.kl7uw.com
"Kits made by KL7UW"
Dubus Mag business:
[hidden email]

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G4BVY

Re: Interlocking two K3

In reply to this post by G4BVY

Thanks for the comments. I now have a prototype solution running with a
4027 and a 4528 !!
73
Roger

-----Original Message-----
From: Elecraft [mailto:[hidden email]] On Behalf Of Edward
R Cole
Sent: 11 October 2016 05:50
To: [hidden email]
Subject: Re: [Elecraft] Interlocking two K3

The simple fix is to move the 470-ohm resistors to be inserted between pin-1
and Pin-7. The resistor is used to limit current draw when pin-7 is
grounded (inhibiting Tx). With pin-10 directly connected to pin-7, pin-7
will go directly to low when pin-10 does.

If you want a little more insurance that current goes the correct direction
add a diode pointing toward pin-10 from pin-7.

I am using inhibit with my station sequencer (except with the opposite
logic: INH=HI):
http://www.kl7uw.com/TX-INHIBIT.htm
also added a little more band logic for use with transverters and disables
inhibit with HF.

73, Ed - KL7UW

-----------------
From: "Val" <[hidden email]>
To: <[hidden email]>
Subject: Re: [Elecraft] Interlocking two K3
Message-ID: <835760C8560A48D18E811EB243F91E3E@OFFICE>
Content-Type: text/plain; format=flowed; charset="iso-8859-1";
reply-type=original

Charlie, how this could work after there is no way the TX Inh inputs to be
pulled down?

73, Val LZ1VB

> Roger:
> Look at:
>
> http://www.kkn.net/~n6tv/SimpleElecraftK3SO2RLockoutCircuit.pdf
>
> I belive it's different than the one you described in your email.
> I've
> used this one successfully.
>
> 73 charlie, k1xx

73, Ed - KL7UW
http://www.kl7uw.com
"Kits made by KL7UW"
Dubus Mag business:
[hidden email]

______________________________________________________________
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delivered to [hidden email]

-----
No virus found in this message.
Checked by AVG - www.avg.com
Version: 2016.0.7797 / Virus Database: 4656/13187 - Release Date: 10/10/16

-----
No virus found in this message.
Checked by AVG - www.avg.com
Version: 2016.0.7797 / Virus Database: 4656/13188 - Release Date: 10/11/16

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Matthew Cook

Re: Interlocking two K3

Aren't those just virtual widgets that you stitch together in a software
package drop some pins down and download to your FPGA ?

You'd have to be old enough to know they started as silicon, I'm sure I can
find the masks or some bare dies for those here at work (*wink*).

73

Matthew
VK5ZM

On 14 October 2016 at 07:41, Roger Dixon <[hidden email]> wrote:

> Thanks for the comments. I now have a prototype solution running with a
> 4027 and a 4528 !!
> 73
> Roger
>
> -----Original Message-----
> From: Elecraft [mailto:[hidden email]] On Behalf Of
> Edward
> R Cole
> Sent: 11 October 2016 05:50
> To: [hidden email]
> Subject: Re: [Elecraft] Interlocking two K3
>
> The simple fix is to move the 470-ohm resistors to be inserted between
> pin-1
> and Pin-7. The resistor is used to limit current draw when pin-7 is
> grounded (inhibiting Tx). With pin-10 directly connected to pin-7, pin-7
> will go directly to low when pin-10 does.
>
> If you want a little more insurance that current goes the correct direction
> add a diode pointing toward pin-10 from pin-7.
>
> I am using inhibit with my station sequencer (except with the opposite
> logic: INH=HI):
> http://www.kl7uw.com/TX-INHIBIT.htm
> also added a little more band logic for use with transverters and disables
> inhibit with HF.
>
> 73, Ed - KL7UW
>
> -----------------
> From: "Val" <[hidden email]>
> To: <[hidden email]>
> Subject: Re: [Elecraft] Interlocking two K3
> Message-ID: <835760C8560A48D18E811EB243F91E3E@OFFICE>
> Content-Type: text/plain; format=flowed; charset="iso-8859-1";
> reply-type=original
>
> Charlie, how this could work after there is no way the TX Inh inputs to be
> pulled down?
>
> 73, Val LZ1VB
>
> > Roger:
> > Look at:
> >
> > http://www.kkn.net/~n6tv/SimpleElecraftK3SO2RLockoutCircuit.pdf
> >
> > I belive it's different than the one you described in your email.
> > I've
> > used this one successfully.
> >
> > 73 charlie, k1xx
>
>
> 73, Ed - KL7UW
> http://www.kl7uw.com
> "Kits made by KL7UW"
> Dubus Mag business:
> [hidden email]
>
> ______________________________________________________________
> 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
> Message
> delivered to [hidden email]
>
>
> -----
> No virus found in this message.
> Checked by AVG - www.avg.com
> Version: 2016.0.7797 / Virus Database: 4656/13187 - Release Date: 10/10/16
>
> -----
> No virus found in this message.
> Checked by AVG - www.avg.com
> Version: 2016.0.7797 / Virus Database: 4656/13188 - Release Date: 10/11/16
>
> ______________________________________________________________
> 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
> Message delivered to [hidden email]
>