Jim Haynes wrote:
["Followup-To:" header set to rec.radio.amateur.equipment.]
On 2009-08-18, dave wrote:
I need to lose about 5 dB from a 15 Watt exciter. Thanks.

Do you really need to lose some watts? Or do you just need to
reduce the voltage to whatever you are driving? Maybe a capacitive
voltage divider would do what you need.

Jim W6JVE

It's a Tokyo Hy-Power HL-45B amp, designed to be driven with a Yaesu
FT-817. I'm using a "20 Watt" Argonaut V, which isn't terribly linear
at 5 Watts (closer to 3 is actually what's required by the THP).

On Aug 18, 8:32*am, dave wrote:
I need to lose about 5 dB from a 15 Watt exciter. *Thanks.

You could build the attenuator so it takes the power down in steps
perhaps 2 1db attenuators followed by a 3db attenuator. I didnt run
then numbers but I think this is doable with 2 watt resistors.

Jimmie

JIMMIE wrote:
On Aug 18, 8:32 am, dave wrote:
I need to lose about 5 dB from a 15 Watt exciter. Thanks.

You could build the attenuator so it takes the power down in steps
perhaps 2 1db attenuators followed by a 3db attenuator. I didnt run
then numbers but I think this is doable with 2 watt resistors.

Jimmie

Thanks. I have some honkin' metal oxide resistors that I'm going to use.