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K3 to Al-811 Amplifier

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pastormg
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K3 to Al-811 Amplifier

pastormg
Hi Guys, I would like to hook up my K3 to an Ameritron Al-811 Amplifier. I assume that I connect the K3 output to the Amplifier Input. An the Keying Cable that is in the back to the Relay Plug on the Al-811? I see an ALC Output and ALC Adjustment knob. But I probably don't need to use those. But then again I could be wrong. Has anyone used the AL-811 with the K3? Thanks in advance. Mark Griffin, KB3Z
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Jim Bennett
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Re: K3 to Al-811 Amplifier

Jim Bennett
Hi Mark - I used an AL-811 along with my K3 for almost a year. It works fine, and the only two cables you need are the coax and the PTT line. ALC connection is not recommended. Also, you will need an RF power meter between the AL-811 and your antenna (if it is resonant), or between the AL-811 and your antenna tuner, if the antenna is NOT resonant. And don't forget, disable the K3's internal antenna tuner, if you have that option installed. There is a very good and helpful AL-811 tuning web page out there. The URL is:

http://www.w8ji.com/al811h_and_811_tuning_supplement.htm

Hope that helps.

73, Jim / W6JHB




On   Friday, Dec 13, 2013, at  Friday, 10:01 AM, [hidden email] wrote:

> Hi Guys, I would like to hook up my K3 to an Ameritron Al-811 Amplifier. I assume that I connect the K3 output to the Amplifier Input. An the Keying Cable that is in the back to the Relay Plug on the Al-811? I see an ALC Output and ALC Adjustment knob. But I probably don't need to use those. But then again I could be wrong. Has anyone used the AL-811 with the K3? Thanks in advance. Mark Griffin, KB3Z
> ______________________________________________________________
> Elecraft mailing list
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Dick Dievendorff-4
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Re: K3 to Al-811 Amplifier

Dick Dievendorff-4
In reply to this post by pastormg
Not an AL-811, but I've used an AL-1200 with my K3. I used an RCA cable for
amplifier keying and a PL-259 jumper for RF.

I did not connect ALC, I instead adjusted the K3's power output as
appropriate.

73 de Dick, K6KR


-----Original Message-----
From: [hidden email]
[mailto:[hidden email]] On Behalf Of [hidden email]
Sent: Friday, December 13, 2013 10:02 AM
To: [hidden email]
Subject: [Elecraft] K3 to Al-811 Amplifier

Hi Guys, I would like to hook up my K3 to an Ameritron Al-811 Amplifier. I
assume that I connect the K3 output to the Amplifier Input. An the Keying
Cable that is in the back to the Relay Plug on the Al-811? I see an ALC
Output and ALC Adjustment knob. But I probably don't need to use those. But
then again I could be wrong. Has anyone used the AL-811 with the K3? Thanks
in advance. Mark Griffin, KB3Z
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W5MF
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Re: K3 to Al-811 Amplifier

W5MF
I used an AL-811H for many years with my K3. Coax connection and PTT is all
that is needed.

Some other things to think about:
- Ameritron 811H only need about 60 watts or so to drive it. At the
beginning, I ran about 100 watts into the amp, but after a few years I
noticed that the finals had silvery spots on the grids. That's because I was
over driving the amp and melted the them. Only use enough in to get the
required out. 60 to 70 watts is plenty on that amp.


Harold "Marty" Fitzgerald W5MF
[hidden email]


Not an AL-811, but I've used an AL-1200 with my K3. I used an RCA cable for
amplifier keying and a PL-259 jumper for RF.

I did not connect ALC, I instead adjusted the K3's power output as
appropriate.

73 de Dick, K6KR


-----Original Message-----
From: [hidden email]
[mailto:[hidden email]] On Behalf Of [hidden email]
Sent: Friday, December 13, 2013 10:02 AM
To: [hidden email]
Subject: [Elecraft] K3 to Al-811 Amplifier

Hi Guys, I would like to hook up my K3 to an Ameritron Al-811 Amplifier. I
assume that I connect the K3 output to the Amplifier Input. An the Keying
Cable that is in the back to the Relay Plug on the Al-811? I see an ALC
Output and ALC Adjustment knob. But I probably don't need to use those. But
then again I could be wrong. Has anyone used the AL-811 with the K3? Thanks
in advance. Mark Griffin, KB3Z
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George Pontiakos
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Re: K3 to Al-811 Amplifier

George Pontiakos
I drive my 811 with 35 watts…and push out around 450…..u can drive it higher to get the full 600, but I have found it wears out the tubes much faster…

My very best to all,

George KA3ZHX
On Dec 13, 2013, at 12:30 PM, Harold Fitzgerald <[hidden email]> wrote:

> I used an AL-811H for many years with my K3. Coax connection and PTT is all
> that is needed.
>
> Some other things to think about:
> - Ameritron 811H only need about 60 watts or so to drive it. At the
> beginning, I ran about 100 watts into the amp, but after a few years I
> noticed that the finals had silvery spots on the grids. That's because I was
> over driving the amp and melted the them. Only use enough in to get the
> required out. 60 to 70 watts is plenty on that amp.
>
>
> Harold "Marty" Fitzgerald W5MF
> [hidden email]
>
>
> Not an AL-811, but I've used an AL-1200 with my K3. I used an RCA cable for
> amplifier keying and a PL-259 jumper for RF.
>
> I did not connect ALC, I instead adjusted the K3's power output as
> appropriate.
>
> 73 de Dick, K6KR
>
>
> -----Original Message-----
> From: [hidden email]
> [mailto:[hidden email]] On Behalf Of [hidden email]
> Sent: Friday, December 13, 2013 10:02 AM
> To: [hidden email]
> Subject: [Elecraft] K3 to Al-811 Amplifier
>
> Hi Guys, I would like to hook up my K3 to an Ameritron Al-811 Amplifier. I
> assume that I connect the K3 output to the Amplifier Input. An the Keying
> Cable that is in the back to the Relay Plug on the Al-811? I see an ALC
> Output and ALC Adjustment knob. But I probably don't need to use those. But
> then again I could be wrong. Has anyone used the AL-811 with the K3? Thanks
> in advance. Mark Griffin, KB3Z
> ______________________________________________________________
> 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
>
> ______________________________________________________________
> 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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