[1000mp] ETO 91b and yaesu keying

[Jay Bromley]

Hi Mark,
Yes that is correct and it will work, but when I tested my setup I found out 
that it is not really using the Key-Out line without the pullup resistor. 
Give it a try both ways.  I bet you will find that un-hooking the Key-Out 
without the pull up resistor installed the rig will still have power out. 
With the 10K ohm resistor pull up resistor installed by un-hooking the Key 
out jack the power output should drop out indicating the loop is working.  I 
have used both the 91b ( a friend's amp ) and my 99, both are identical in 
operation as far as I can tell.

Gud luck and 73 de jay..


> Jay
> thanks I will try it.On the other page of N1EU he explaine that the 10k
> resistor is not needed on a 99.I don't see any difference in a 91 and 99
>
> marc on4ma
>
>> Hi Marc,
>> Try this link out.   http://www.qsl.net/n1eu/Yaesu/MPAcom.htm
>>
>> I made up a cable that goes to my band data jack in the back of FT-1000mp
>> Mark V Field and use both the Key In and Key Out jacks with my Alpha 99.
>> The setup works great!  Make sure you have the right DIN connector.  You
> can
>> get them direct from Yaesu.  The standard 8 pin DINs will damage the DIN
>> socket Yaesu uses in the back of rig.  On my Mark V the 10K ohm pull up
>> resistor was needed for what you are trying to do.  If you wire your rig
> up
>> per the diagram you can check it by removing the Key-Out cable.  If you
> made
>> the cable right the rig will not transmit without the Key Out jack hooked
>> up.  For that matter just plugging in the DIN plug should do the same
> thing.
>> Hooking the Key-Out jack back up you should have output from the rig.
>> Wiring the rig and amp this way should remove any chance of hot 
>> switching.
>> Funny that Alpha sells a pre-made cable that only uses the one line.  It
>> does allow you to use transistor keying from the Mark V and makes the
>> operation quieter, but for around $50 you would think they could add the
>> second cable.  I guess with all the protection that have in the amp they
> may
>> think it is not necessary??
>>
>> Now a days hot switching may not much of a problem with vacuum relays and
>> rigs with transistor switching.  But I did ruin a Jennings relay in my
> Alpha
>> 77 DX before getting smart.  I don't use full break-in to much with the
>> current setup, but I think it runs smoother in semi-break-in mode.  I do
> use
>> the rig in QSK when I am barefoot mode and love it.
>>
>> Don't forget if you ever unhook the cables to the amp, be sure to add a
>> phono barrel or unplug the band data jack or you will have no output.  I
> had
>> my Alpha unhooked and forgot about why no power output.  I felt pretty
>> stupid when I remembered why!
>>
>> Using old AM rigs like the KW-1 and the Johnson Desk KW will teach you a
> lot
>> about relay sequencing!  One of my old Dow Keys had a grove cut in the
>> insulator before I smartened up.  Things are much better these days!!
>>
>> I would like to think Barry for making this information available.
>>
>> Gud luck and let me know how you make out.
>>
>> 73 de jay..
>>
>>
>>
>>
>>
>> ----- Original Message -----
>> From: "Marc Wullaert" <marc.wullaert3 at pandora.be>
>> To: <amps at contesting.com>
>> Cc: <1000mp at mailman.qth.net>
>> Sent: Sunday, March 27, 2005 2:46 AM
>> Subject: [1000mp] ETO 91b and yaesu keying
>>
>>
>> > Hi ,
>> > I'm a bit confused.I want to connect my Yaesu ft1000mp to my
>> > ETO 91b ampli via the banddata of the radio.
>> > On the back of the 91b you have RELAY  and KEY  OUT.
>> > I want tho use the Key out also to not have hot key switching while
>> > using qsk.
>> > My thaugt was to connect the Key out to the TX INHIBIT off the
>> > radio.On the alpha site they say to connect TX INHIBIT to the ground
>> > on the Relay jack.
>> >
>> > I thaugt that the KEY OUT  is for thelling the radio all is ok you can
>> > transmit or
>> > give power out ? Wright
>> >
>> > Could someone set a light on this ?
>> >
>> > marc on4ma
>> >
>> >
>> >
>> >
>> >
>> >
>> >
>> >
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