Ken Bessler wrote:

HF Pack's K5OOR amp build IV is nearing it's release
date. The amp accepts 1-2 watts drive to produce 35-40
watts output. The amp runs class AB and is bandswitched.
Operates 160, 80, 75, 60, 40, 30, 20, 17, 15, 12 & 10
meters. New to build IV is tha addition of 60 meters.

Cost of the amp is only $122 for the complete kit. You
can see details for this project at:

http://www.hfprojects.com/

Who winds the inductors in this kit? If there are no instructions this
could be a problem.

"ps" wrote in message
...
Ken Bessler wrote:

HF Pack's K5OOR amp build IV is nearing it's release
date. The amp accepts 1-2 watts drive to produce 35-40
watts output. The amp runs class AB and is bandswitched.
Operates 160, 80, 75, 60, 40, 30, 20, 17, 15, 12 & 10
meters. New to build IV is tha addition of 60 meters.

Cost of the amp is only $122 for the complete kit. You
can see details for this project at:

http://www.hfprojects.com/

Who winds the inductors in this kit? If there are no instructions this
could be a problem.



The buyer winds the inductors. Not to worry, though - the
instructions are easy to follow and well written. You can
download all the instruction manuals from the HFpack site.

http://www.hfprojects.com/modules.ph...download&cid=1

Basically, an example would be - pick x colored torriod, cut
x inches of enamled wire, wind x turns. Simple!

73's de Ken KG0WX

"ps" wrote in message
...
Ken Bessler wrote:

HF Pack's K5OOR amp build IV is nearing it's release
date. The amp accepts 1-2 watts drive to produce 35-40
watts output. The amp runs class AB and is bandswitched.
Operates 160, 80, 75, 60, 40, 30, 20, 17, 15, 12 & 10
meters. New to build IV is tha addition of 60 meters.

Cost of the amp is only $122 for the complete kit. You
can see details for this project at:

http://www.hfprojects.com/

Who winds the inductors in this kit? If there are no instructions this
could be a problem.



The buyer winds the inductors. Not to worry, though - the
instructions are easy to follow and well written. You can
download all the instruction manuals from the HFpack site.

http://www.hfprojects.com/modules.ph...download&cid=1

Basically, an example would be - pick x colored torriod, cut
x inches of enamled wire, wind x turns. Simple!

73's de Ken KG0WX

"Bob Miller" wrote in message
news
What if the exciter (a ten tec 1320) puts out 4 or 5 watts cw, and
there's no convenient way to lower the output? Would that overdrive
the amp?

Bob
k5qwg

Morning, Bob - I emailed K5OOR Virgil with your question but
in the mean time I looked at the schematics. The incoming signal
is fed through an attenuator. This attenuator (r2, r3 & r4) can be
set up for specific rigs. Here is the matrix:

DB R3 R2 R4 IN OUT RIG
3 300 18 300 2.0 1.0 K2
4 220 24 220 2.5 1.0 FT-817
5 130 43 130 3.0 1.0 Other

As you can see, the amp really needs only 1 watt of drive. It
would be very simple to make a pad to attenuate your 5w
down to 1w. A 6db pad would take 4w down to 1w but
5w would be 1.25 watts, a little much so I'd go with a 7db
pad - according to my math that would be just right.

Hope that helps,
Ken KG0WX

"Bob Miller" wrote in message
news
What if the exciter (a ten tec 1320) puts out 4 or 5 watts cw, and
there's no convenient way to lower the output? Would that overdrive
the amp?

Bob
k5qwg

Morning, Bob - I emailed K5OOR Virgil with your question but
in the mean time I looked at the schematics. The incoming signal
is fed through an attenuator. This attenuator (r2, r3 & r4) can be
set up for specific rigs. Here is the matrix:

DB R3 R2 R4 IN OUT RIG
3 300 18 300 2.0 1.0 K2
4 220 24 220 2.5 1.0 FT-817
5 130 43 130 3.0 1.0 Other

As you can see, the amp really needs only 1 watt of drive. It
would be very simple to make a pad to attenuate your 5w
down to 1w. A 6db pad would take 4w down to 1w but
5w would be 1.25 watts, a little much so I'd go with a 7db
pad - according to my math that would be just right.

Hope that helps,
Ken KG0WX

Morning, Bob - I emailed K5OOR Virgil with your question but
in the mean time I looked at the schematics. The incoming signal
is fed through an attenuator. This attenuator (r2, r3 & r4) can be
set up for specific rigs. Here is the matrix:

DB R3 R2 R4 IN OUT RIG
3 300 18 300 2.0 1.0 K2
4 220 24 220 2.5 1.0 FT-817
5 130 43 130 3.0 1.0 Other

As you can see, the amp really needs only 1 watt of drive. It
would be very simple to make a pad to attenuate your 5w
down to 1w. A 6db pad would take 4w down to 1w but
5w would be 1.25 watts, a little much so I'd go with a 7db
pad - according to my math that would be just right.

Update - Virgil just sent me the specs on a 7db pad:

DB R3 R2 R4
7 130.7 44.8 130.7

hope that helps,

73's de Ken KG0WX

Morning, Bob - I emailed K5OOR Virgil with your question but
in the mean time I looked at the schematics. The incoming signal
is fed through an attenuator. This attenuator (r2, r3 & r4) can be
set up for specific rigs. Here is the matrix:

DB R3 R2 R4 IN OUT RIG
3 300 18 300 2.0 1.0 K2
4 220 24 220 2.5 1.0 FT-817
5 130 43 130 3.0 1.0 Other

As you can see, the amp really needs only 1 watt of drive. It
would be very simple to make a pad to attenuate your 5w
down to 1w. A 6db pad would take 4w down to 1w but
5w would be 1.25 watts, a little much so I'd go with a 7db
pad - according to my math that would be just right.

Update - Virgil just sent me the specs on a 7db pad:

DB R3 R2 R4
7 130.7 44.8 130.7

hope that helps,

73's de Ken KG0WX

http://www.hfprojects.com/

Some nice pictures but I have a question...

Who's going to be first with a 100 in 1500 out mobile kit?

Lee Martin's Skywalker is nice but doesn't quite hit the mark:-)

(((73)))
--
Philip de Cadenet G4ZOW
Transmitters 'R' Us
http://www.transmittersrus.com

http://www.hfprojects.com/

Some nice pictures but I have a question...

Who's going to be first with a 100 in 1500 out mobile kit?

Lee Martin's Skywalker is nice but doesn't quite hit the mark:-)

(((73)))
--
Philip de Cadenet G4ZOW
Transmitters 'R' Us
http://www.transmittersrus.com