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KX3 to Non-Elecraft Linear Amp

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n7dsx

KX3 to Non-Elecraft Linear Amp

I am looking to see if anyone else has used an Ameritron AL811 with their
KX3 with positive results.

I plan on buying the KXPA100, but after buying the Shack in a Bag, I will
need to put it off for a little bit. In the mean time, I would like to try
using what I have, but I am hesitant to try since the KX3 is new to me and
I don't want to harm anything.

I have a base station radio that plugs into the Ameritron AL811 by way of
the ARB-704 and it works great with 70 watts going it to make 600 watts
going out. The ARB amp line is a simple RCA jack from the ARB 704 to the
rear of the Amp, but the radio cord is the Multi cord plugged into my base
station. I know I can unplug the multi cord and use the RCA jack on the
back of the ARB 704 "radio" input, but I am not sure where that will plug
into.

I know that I can only push 15 watts max into the Ameritron, but wouldn't
that mean that I could get somewhere around 180 watts out of it? Would it
work like that?

I bought the cable pack from Elecraft, so I am pretty sure I have
everything that I need to make it happen, but I would love the advice of
someone on here that may have already done this, or has good information on
why I should not try this. I could also use help in which plugs to plug
where.

Thank you for any information that anybody may be able to give and please
forgive me if this has been posted somewhere already. I have done my best
to search for several days online and in this forum, but I am not coming up
with any answers.

73,

Dan
N7DSX
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Don Wilhelm

Re: KX3 to Non-Elecraft Linear Amp

Dan,

The KX3 has a KEYINE OUT output which will key your amplifier. It is on
the ring contact of the ACC 2.5mm jack. See page 5 of the KX3 manual.

When you add the KXPA100, there is a "black box" on the KX3 to KXPA100
cable set which brings that KEYLINE signal out to an RCA jack. See the
KXPA100 manual.

So if you have only the KX3 now, you will have to build a cable which
takes the ring contact of a 2.5mm stereo plug out to an RCA plug which
you would connect to your amplifier.

The KX3 KEYLINE output is rated to accept up to 30 volts and up to 100ma.

73,
Don W3FPR

On 4/2/2019 10:04 AM, Dan Smith wrote:

> I am looking to see if anyone else has used an Ameritron AL811 with their
> KX3 with positive results.
>
> I plan on buying the KXPA100, but after buying the Shack in a Bag, I will
> need to put it off for a little bit. In the mean time, I would like to try
> using what I have, but I am hesitant to try since the KX3 is new to me and
> I don't want to harm anything.
>
> I have a base station radio that plugs into the Ameritron AL811 by way of
> the ARB-704 and it works great with 70 watts going it to make 600 watts
> going out. The ARB amp line is a simple RCA jack from the ARB 704 to the
> rear of the Amp, but the radio cord is the Multi cord plugged into my base
> station. I know I can unplug the multi cord and use the RCA jack on the
> back of the ARB 704 "radio" input, but I am not sure where that will plug
> into.
>
> I know that I can only push 15 watts max into the Ameritron, but wouldn't
> that mean that I could get somewhere around 180 watts out of it? Would it
> work like that?
>
> I bought the cable pack from Elecraft, so I am pretty sure I have
> everything that I need to make it happen, but I would love the advice of
> someone on here that may have already done this, or has good information on
> why I should not try this. I could also use help in which plugs to plug
> where.
>
> Thank you for any information that anybody may be able to give and please
> forgive me if this has been posted somewhere already. I have done my best
> to search for several days online and in this forum, but I am not coming up
> with any answers.
>
> 73,
>
> Dan
> N7DSX
> ______________________________________________________________
> 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
>

______________________________________________________________
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Don Wilhelm

Re: KX3 to Non-Elecraft Linear Amp

Dan,

That looks like it should work fine.

73,
Don W3FPR

On 4/2/2019 11:50 AM, Dan Smith wrote:

>
> Thank you, Don.
>
> I think I have the Elecraft cable for the Keyline output/ACC2 as it
> came with the cable pack that I purchased.
>
> >From this lead, I would connect the RCA to the RCA amp port on the
> ARB 704 interface as the buffer step between the transceiver and the
> amplifier as is the case with my base station, correct?
>
> Can you confirm that this will isolate the KX3 from the amp and not
> cause any damage to either? Under normal/best case circumstances.
>
> Does this look right?
> Image
>
>
> Image
>
>
> Thank you so much for your help with this.
>
> 73,
>
> Dan
> N7DSX
>
>
>
>
> From: Don Wilhelm
> Sent: Tuesday, April 2, 7:45 AM
> Subject: Re: [Elecraft] KX3 to Non-Elecraft Linear Amp
> To: Dan Smith, [hidden email]
>
>
> Dan, The KX3 has a KEYINE OUT output which will key your amplifier. It
> is on the ring contact of the ACC 2.5mm jack. See page 5 of the KX3
> manual. When you add the KXPA100, there is a "black box" on the KX3 to
> KXPA100 cable set which brings that KEYLINE signal out to an RCA jack.
> See the KXPA100 manual. So if you have only the KX3 now, you will have
> to build a cable which takes the ring contact of a 2.5mm stereo plug
> out to an RCA plug which you would connect to your amplifier. The KX3
> KEYLINE output is rated to accept up to 30 volts and up to 100ma. 73,
> Don W3FPR On 4/2/2019 10:04 AM, Dan Smith wrote: > I am looking to see
> if anyone else has used an Ameritron AL811 with their > KX3 with
> positive results. > > I plan on buying the KXPA100, but after buying
> the Shack in a Bag, I will > need to put it off for a little bit. In
> the mean time, I would like to try > using what I have, but I am
> hesitant to try since the KX3 is new to me and > I don't want to harm
> anything. > > I have a base station radio that plugs into the
> Ameritron AL811 by way of > the ARB-704 and it works great with 70
> watts going it to make 600 watts > going out. The ARB amp line is a
> simple RCA jack from the ARB 704 to the > rear of the Amp, but the
> radio cord is the Multi cord plugged into my base > station. I know I
> can unplug the multi cord and use the RCA jack on the > back of the
> ARB 704 "radio" input, but I am not sure where that will plug > into.
> > > I know that I can only push 15 watts max into the Ameritron, but
> wouldn't > that mean that I could get somewhere around 180 watts out
> of it? Would it > work like that? > > I bought the cable pack from
> Elecraft, so I am pretty sure I have > everything that I need to make
> it happen, but I would love the advice of > someone on here that may
> have already done this, or has good information on > why I should not
> try this. I could also use help in which plugs to plug > where. > >
> Thank you for any information that anybody may be able to give and
> please > forgive me if this has been posted somewhere already. I have
> done my best > to search for several days online and in this forum,
> but I am not coming up > with any answers. > > 73, > > Dan > N7DSX >
> ______________________________________________________________ >
> 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 >
>