KX1 with HF Packer Amp

[Paul Webb]

Some discussion lately on using the K2 to drive the HF Packer Amp.  I
bought the amp kit some time ago and have not yet built it.  My main reason
for buying was to use it to beef up a KX1 signal.

Has anyone had any experience driving the Packer Amp with a KX1?  My KX1
puts out 4 watts on 40 meters and 3.5 watts on 20 meters.  Should have
plenty of drive for the Amp.

Any comments and help will be very much appreciated.

Paul Webb, K5HKX
Clute, TX


PAUL WEBB
[hidden email]


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[Sandy W5TVW]

That may be TOO much drive for the HF PAcker!  I drive one on 160-20 meters
with a K1 and it takes about 1.5-2.0 watts to make the HF Packer deliver 35
watts out.
If you can't control the power output of the KX1, then you may have to change the
values of the attenuator network in the input path of the HF Packer on the RF board
therein.
I have had fantastic results from my HF Packer.  Only complaint is it needs
a bit of modification of the "hang time".  Needs to be much shorter!
OK for SSB but no good for CW contest/net activity.  Ok for casual QSO's.
"Hang time" once keyed is much too long for CW.
73,

Sandy W5TVW
----- Original Message -----
From: "Paul Webb" <[hidden email]>
To: <[hidden email]>
Sent: Monday, February 06, 2006 12:04 PM
Subject: [Elecraft] KX1 with HF Packer Amp


| Some discussion lately on using the K2 to drive the HF Packer Amp.  I
| bought the amp kit some time ago and have not yet built it.  My main reason
| for buying was to use it to beef up a KX1 signal.
|
| Has anyone had any experience driving the Packer Amp with a KX1?  My KX1
| puts out 4 watts on 40 meters and 3.5 watts on 20 meters.  Should have
| plenty of drive for the Amp.
|
| Any comments and help will be very much appreciated.
|
| Paul Webb, K5HKX
| Clute, TX
|
|
| PAUL WEBB
| [hidden email]
|
|
| _______________________________________________
| 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
|
|
|
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[Leigh L. Klotz Jr WA5ZNU]

Paul,

With 2.4 to 4W out on your KX1 it sounds like you are running the KX1 on
13.8v.  Rather than adjusting the power out pot, which has a limited
lifetime according to the manual, try running the KX1 on internal
Lithium batteries (the Energizer ones that Elecraft recommends) and the
drive should be just right for the amplifier.

Also, for portable use, I don't uset the straight-fed wire antenna that
the manual suggests for the barefoot rig, but instead a vertical a few
feet away, or a doublet fed with twinlead.

The T1 tuner is OK for 35W with it for CW but I wouldn't run a contest
with it.

73,
Leigh/WA5ZNU
On Mon, 6 Feb 2006 5:17 pm, Paul Webb wrote:

> Some discussion lately on using the K2 to drive the HF Packer Amp.  I
> bought the amp kit some time ago and have not yet built it.  My main
> reason
> for buying was to use it to beef up a KX1 signal.
>
> Has anyone had any experience driving the Packer Amp with a KX1?  My
> KX1
> puts out 4 watts on 40 meters and 3.5 watts on 20 meters.  Should have
> plenty of drive for the Amp.
>

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