Elecraft

K3 External ALC Modification Question

Classic

List

Threaded

6 messages Options

Roger Marrotte-2

K3 External ALC Modification Question

I'm in the process of implementing the K3 external ALC mod. It is not clear
to me, between the picture and instructions supplied with the mod kit, what
is going on at the junction of the 69.8K, the 100K and the 137K resistors.
Is this junction floating above the board or soldered to one of the header
pins? It kind of looks as if the junction is raised above the board but I'm
not at all sure.

Roger Marrotte, W1EM
_______________________________________________
Elecraft mailing list
Post to: [hidden email]
You must be a subscriber to post to the list.
Subscriber Info (Addr. Change, sub, unsub etc.):
http://mailman.qth.net/mailman/listinfo/elecraft

Help: http://mailman.qth.net/subscribers.htm
Elecraft web page: http://www.elecraft.com

KK7P

Re: K3 External ALC Modification Question

> I'm in the process of implementing the K3 external ALC mod. It is not clear
> to me, between the picture and instructions supplied with the mod kit, what
> is going on at the junction of the 69.8K, the 100K and the 137K resistors.

They converge on pin 9 of the connector, and are soldered to it.

73,

Lyle KK7P

_______________________________________________
Elecraft mailing list
Post to: [hidden email]
You must be a subscriber to post to the list.
Subscriber Info (Addr. Change, sub, unsub etc.):
http://mailman.qth.net/mailman/listinfo/elecraft

Help: http://mailman.qth.net/subscribers.htm
Elecraft web page: http://www.elecraft.com

KK7P

Re: K3 External ALC Modification Question

Lyle Johnson wrote:
>> I'm in the process of implementing the K3 external ALC mod. It is not
>> clear
>> to me, between the picture and instructions supplied with the mod kit,
>> what
>> is going on at the junction of the 69.8K, the 100K and the 137K
>> resistors.
>
> They converge on pin 9 of the connector, and are soldered to it.

I meant, the 9th pin from the nearer end of the connector. In other
words, the pad under which the leads from the three resistors come
together in the photo is soldered to those leads.

73,

Lyle KK7P

_______________________________________________
Elecraft mailing list
Post to: [hidden email]
You must be a subscriber to post to the list.
Subscriber Info (Addr. Change, sub, unsub etc.):
http://mailman.qth.net/mailman/listinfo/elecraft

Help: http://mailman.qth.net/subscribers.htm
Elecraft web page: http://www.elecraft.com

Charly

RE: K3 External ALC Modification Question

LYLE.... What is a "ALC external mod" ????????????????

Charles Harpole

[hidden email]

> Date: Wed, 10 Sep 2008 10:24:27 -0700
> From: [hidden email]
> To: [hidden email]
> Subject: Re: [Elecraft] K3 External ALC Modification Question
> CC: [hidden email]
>
> Lyle Johnson wrote:
>>> I'm in the process of implementing the K3 external ALC mod. It is not
>>> clear
>>> to me, between the picture and instructions supplied with the mod kit,
>>> what
>>> is going on at the junction of the 69.8K, the 100K and the 137K
>>> resistors.
>>
>> They converge on pin 9 of the connector, and are soldered to it.
>
> I meant, the 9th pin from the nearer end of the connector. In other
> words, the pad under which the leads from the three resistors come
> together in the photo is soldered to those leads.
>
> 73,
>
> Lyle KK7P
>
> _______________________________________________
> Elecraft mailing list
> Post to: [hidden email]
> You must be a subscriber to post to the list.
> Subscriber Info (Addr. Change, sub, unsub etc.):
> http://mailman.qth.net/mailman/listinfo/elecraft
>
> Help: http://mailman.qth.net/subscribers.htm
> Elecraft web page: http://www.elecraft.com

_______________________________________________
Elecraft mailing list
Post to: [hidden email]
You must be a subscriber to post to the list.
Subscriber Info (Addr. Change, sub, unsub etc.):
http://mailman.qth.net/mailman/listinfo/elecraft

Help: http://mailman.qth.net/subscribers.htm
Elecraft web page: http://www.elecraft.com

dj7mgq

RE: K3 External ALC Modification Question

Quoting Charles Harpole <[hidden email]>:
>
> LYLE.... What is a "ALC external mod" ????????????????

<http://www.elecraft.com/K3/mods/K3ALCMod.pdf>

_______________________________________________
Elecraft mailing list
Post to: [hidden email]
You must be a subscriber to post to the list.
Subscriber Info (Addr. Change, sub, unsub etc.):
http://mailman.qth.net/mailman/listinfo/elecraft

Help: http://mailman.qth.net/subscribers.htm
Elecraft web page: http://www.elecraft.com

Greg - AB7R

RE: K3 External ALC Modification Question

In reply to this post by Roger Marrotte-2

Charles,

Its on the enhancements and application mods page.

http://www.elecraft.com/K3/k3_app_notes.htm

-------------------------
73,
Greg - AB7R
Whidbey Island WA
NA-065

On Fri Sep 12 3:15 , Charles Harpole sent:

>
>LYLE.... What is a "ALC external mod" ????????????????
>
>
>Charles Harpole
>
>[hidden email]
>
>
>
>
>
>
>> Date: Wed, 10 Sep 2008 10:24:27 -0700
>> From: [hidden email]
>> To: [hidden email]
>> Subject: Re: [Elecraft] K3 External ALC Modification Question
>> CC: [hidden email]
>>
>> Lyle Johnson wrote:
>>>> I'm in the process of implementing the K3 external ALC mod. It is not
>>>> clear
>>>> to me, between the picture and instructions supplied with the mod kit,
>>>> what
>>>> is going on at the junction of the 69.8K, the 100K and the 137K
>>>> resistors.
>>>
>>> They converge on pin 9 of the connector, and are soldered to it.
>>
>> I meant, the 9th pin from the nearer end of the connector. In other
>> words, the pad under which the leads from the three resistors come
>> together in the photo is soldered to those leads.
>>
>> 73,
>>
>> Lyle KK7P
>>
>> _______________________________________________
>> Elecraft mailing list
>> Post to: [hidden email]
>> You must be a subscriber to post to the list.
>> Subscriber Info (Addr. Change, sub, unsub etc.):
>> http://mailman.qth.net/mailman/listinfo/elecraft
>>
>> Help: http://mailman.qth.net/subscribers.htm
>> Elecraft web page: http://www.elecraft.com
>_______________________________________________
>Elecraft mailing list
>Post to: [hidden email]
>You must be a subscriber to post to the list.
>Subscriber Info (Addr. Change, sub, unsub etc.):
> http://mailman.qth.net/mailman/listinfo/elecraft
>
>Help: http://mailman.qth.net/subscribers.htm
>Elecraft web page: http://www.elecraft.com