Hi,

I would like to buy a desk kW-class amplifier (tube or solid-state) but
before I try to get as much information I can about advantages and drawbacks
of each model (I have 12 tubes amps to compare while solid-states are not
numerous between Icom - too expensive -, Yaesu and Tokyo Hy-Power).

I learnt for example that Yaesu VL-1000 Quadra displays a RF ouput of about
1kW PEP, in line with its specs
On the contrary the Tokyo Hy-Power HL-1KFX, 1.2 kW PEP provides less than
600W peak output (250W in RTTY or AM), even using an antenna tuner to get a
VSWR 1:1 on the working band. So we cannot really say that the lost power
(in this case 600W) is lost as heat as my SWR on the line is well 1:1.

Can someone explain me where goes the lost power in the Tokyo model or if my
reflexion is faulty?

Thanks in advance

Thierry
ON4SKY
QSL Mgr for LX3SKY
http://www.astrosurf.com/lombry

Hi,

I learnt for example that Yaesu VL-1000 Quadra displays a RF ouput of about
1kW PEP, in line with its specs
On the contrary the Tokyo Hy-Power HL-1KFX, 1.2 kW PEP provides less than
600W peak output (250W in RTTY or AM), even using an antenna tuner to get a
VSWR 1:1 on the working band. So we cannot really say that the lost power
(in this case 600W) is lost as heat as my SWR on the line is well 1:1.

Can someone explain me where goes the lost power in the Tokyo model or if my
reflexion is faulty?


It is all about how you read the specifications.

The VL-1000 has 1.0kW output for 2.1kW DC input

The HL-1KFX has 0.6kW output for 1.2KW DC input.


73 de Joe, G3LLV

Hi,

I learnt for example that Yaesu VL-1000 Quadra displays a RF ouput of about
1kW PEP, in line with its specs
On the contrary the Tokyo Hy-Power HL-1KFX, 1.2 kW PEP provides less than
600W peak output (250W in RTTY or AM), even using an antenna tuner to get a
VSWR 1:1 on the working band. So we cannot really say that the lost power
(in this case 600W) is lost as heat as my SWR on the line is well 1:1.

Can someone explain me where goes the lost power in the Tokyo model or if my
reflexion is faulty?


It is all about how you read the specifications.

The VL-1000 has 1.0kW output for 2.1kW DC input

The HL-1KFX has 0.6kW output for 1.2KW DC input.


73 de Joe, G3LLV

The radio equivalent of "serving size" calories, eh? grin

Can anyone tell me (out of curiosity) how much does the Tokyo Hy_power
HL-1KFX cost?

Paul


"Joe McElvenney" wrote in message
...
Hi,

I learnt for example that Yaesu VL-1000 Quadra displays a RF ouput of
about
1kW PEP, in line with its specs
On the contrary the Tokyo Hy-Power HL-1KFX, 1.2 kW PEP provides less
than
600W peak output (250W in RTTY or AM), even using an antenna tuner to
get a
VSWR 1:1 on the working band. So we cannot really say that the lost
power
(in this case 600W) is lost as heat as my SWR on the line is well 1:1.

Can someone explain me where goes the lost power in the Tokyo model or
if my
reflexion is faulty?


It is all about how you read the specifications.

The VL-1000 has 1.0kW output for 2.1kW DC input

The HL-1KFX has 0.6kW output for 1.2KW DC input.


73 de Joe, G3LLV

The radio equivalent of "serving size" calories, eh? grin

Can anyone tell me (out of curiosity) how much does the Tokyo Hy_power
HL-1KFX cost?

Paul


"Joe McElvenney" wrote in message
...
Hi,

I learnt for example that Yaesu VL-1000 Quadra displays a RF ouput of
about
1kW PEP, in line with its specs
On the contrary the Tokyo Hy-Power HL-1KFX, 1.2 kW PEP provides less
than
600W peak output (250W in RTTY or AM), even using an antenna tuner to
get a
VSWR 1:1 on the working band. So we cannot really say that the lost
power
(in this case 600W) is lost as heat as my SWR on the line is well 1:1.

Can someone explain me where goes the lost power in the Tokyo model or
if my
reflexion is faulty?


It is all about how you read the specifications.

The VL-1000 has 1.0kW output for 2.1kW DC input

The HL-1KFX has 0.6kW output for 1.2KW DC input.


73 de Joe, G3LLV

"Joe McElvenney" wrote in message
...
Hi,

I learnt for example that Yaesu VL-1000 Quadra displays a RF ouput of
about
1kW PEP, in line with its specs
On the contrary the Tokyo Hy-Power HL-1KFX, 1.2 kW PEP provides less
than
600W peak output (250W in RTTY or AM), even using an antenna tuner to
get a
VSWR 1:1 on the working band. So we cannot really say that the lost
power
(in this case 600W) is lost as heat as my SWR on the line is well 1:1.

Can someone explain me where goes the lost power in the Tokyo model or
if my
reflexion is faulty?


It is all about how you read the specifications.

The VL-1000 has 1.0kW output for 2.1kW DC input

The HL-1KFX has 0.6kW output for 1.2KW DC input.



You right. I misread specs...

Thierry
73 de Joe, G3LLV

"Joe McElvenney" wrote in message
...
Hi,

I learnt for example that Yaesu VL-1000 Quadra displays a RF ouput of
about
1kW PEP, in line with its specs
On the contrary the Tokyo Hy-Power HL-1KFX, 1.2 kW PEP provides less
than
600W peak output (250W in RTTY or AM), even using an antenna tuner to
get a
VSWR 1:1 on the working band. So we cannot really say that the lost
power
(in this case 600W) is lost as heat as my SWR on the line is well 1:1.

Can someone explain me where goes the lost power in the Tokyo model or
if my
reflexion is faulty?


It is all about how you read the specifications.

The VL-1000 has 1.0kW output for 2.1kW DC input

The HL-1KFX has 0.6kW output for 1.2KW DC input.



You right. I misread specs...

Thierry
73 de Joe, G3LLV