RE: [Elecraft] K2 power with and without PA

[al_lorona]

> I would like to know, if you install the 100W 
> PA, and you run the K2 at 5W or 15W on 
> batteries in the field, is the K2 will drain 
> more power because the PA is installed, or 
> it will drain normal power like about 
> 180 mA - 240 mA on receive ?

> Jean-François Ménard / VA2VYZ

Jean-Francois,

I believe that with the PA installed, even if you shut off the PA's power 
supply and run QRP power, the current drain will be greater than the K2 QRP 
version. I don't have my schematic in front of me, but I believe there are 
circuits in the PA that draw current from the RF board of the K2. You can 
expect something like 150 mA quiescent current drain from the PA.

Therefore, if you are going to operate in the field from batteries, then you 
should physically remove the PA and replace with the QRP top cover to achieve 
the (approx) 200 mA receive current.

Regards,

Al  W6LX

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Re: [Elecraft] K2 power with and without PA

[Don Brown]

HI

The K2/100 will work the same as a QRP K2 if the power is supplied through the 
normal round power connector. When powered through the PowerPole connector on 
the KPA100 the amplifier is enabled. You can also disable the amp in the 
secondary menu. If you disable the PA the current should be about the same as 
the QRP K2. Of course you will need to use an external battery or power supply. 
One other option is to split the K2 and the KPA100. In this arrangement the 
KPA100 is installed in a matching EC2 box and the K2 will have the normal K2 
top with the battery option if you like. A control cable and a RF cable connect 
the two together and the K2 can be used by it self in the field. The KAT100 
tuner can also be installed into the same EC2 box with the KPA100.

Don Brown
KD5NDB 
  - Original Message - 
  From: JEAN-FRANCOIS MENARD 
  To: elecraft@mailman.qth.net 
  Sent: Wednesday, June 16, 2004 7:34 PM
  Subject: [Elecraft] K2 power with and without PA


  I'm very hesitating about building de 100W PA for the K2, because 
  sometime I would like to use it on field in dxpedition.

  I would like to know, if you install the 100W PA, and you run the K2 at 
  5W or 15W on batteries in the field, is the K2 will drain more power 
  because the PA is installed, or it will drain normal power like about 
  180 mA - 240 mA on receive ???

  And in TX at 5W or 15W, will the K2 drain the same power if you have 
  the PA or not ???

  On the field, I could use an external batterie if I installed the 100W 
  PA...

  Thanks for your help.


  A little newbie VA2VYZ

  ===
  Jean-François Ménard / VA2VYZ
  [EMAIL PROTECTED]

  Club d'Astronomie Amateur de Sherbrooke
  Club Radio Amateur de l'Estrie

  Mon site web personnel : 
http://homepage.mac.com/jfmenard
  ===
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RE: [Elecraft] K2 power with and without PA

[Gregg Lengling]

The 100 amp has a new power connector...if you use the original you are only
using the QRP portion and shouldn't have more than a milliamp or two of
extra drain.  Personally you can just remove the amp (the new lid) and put
your old top on and you're back to a QRP K2.\


Gregg R. Lengling, W9DHI, Retired
Administrator http://www.milwaukeehdtv.org
K2/100 S#3075 KX1 S# 57
Member:  ARRL, RSGB, RCA, WERA and ORC
 


-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of JEAN-FRANCOIS MENARD
Sent: Wednesday, June 16, 2004 7:35 PM
To: elecraft@mailman.qth.net
Subject: [Elecraft] K2 power with and without PA

I'm very hesitating about building de 100W PA for the K2, because 
sometime I would like to use it on field in dxpedition.

I would like to know, if you install the 100W PA, and you run the K2 at 
5W or 15W on batteries in the field, is the K2 will drain more power 
because the PA is installed, or it will drain normal power like about 
180 mA - 240 mA on receive ???

And in TX at 5W or 15W, will the K2 drain the same power if you have 
the PA or not ???

On the field, I could use an external batterie if I installed the 100W 
PA...

Thanks for your help.


A little newbie VA2VYZ

===
Jean-François Ménard / VA2VYZ
[EMAIL PROTECTED]

Club d'Astronomie Amateur de Sherbrooke
Club Radio Amateur de l'Estrie

Mon site web personnel : http://homepage.mac.com/jfmenard
===
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