Dave made 1x4 original

[ShadowDelaware]

How many volts is "Safe" I am currently running it at 14.8 and dropping to 14 on key. I am definitely concerned about longevity given the scarcity of toshiba transistors.
I am running the Lincoln 2+ into it with a 2 watt dead key and about 35 watt pep. I have the variable on the the amp set to about 100 watt pep @ dk and am hitting about 845 pep on my meter.

 

[999]

You should use the radio to vary the output, not the amp. The variable in the amp will fail over time. Conversely you can measure the resistance where you have the 100 watt deadkey and replace the variable in the amp with a fixed 5 watt resistor and that will be much sturdier.
As far as the transistors go they are robust enough at that power level and voltage that I wouldn't worry about them so long as you have enough amps on tap and your SWR stays where it is.

 

[BC Coyote]

I keep my DC voltage to 14.2 Volts max for everything. 14.8 is a little high but not likely to be a big problem.........

 

[AudioShockwav]

How many volts is "Safe"

If it is a older class c with Toshiba's you are safe there.
We used to beat the snot out of them....

73
Jeff

 

[9C1Driver]

Great old school amplifier. 800 watts seems like quite a bunch even for a class C 1x4.

 

[ShadowDelaware]

It is the older class c with toshibas. 1 2290 driving 4 2879 red dots

 

[ShadowDelaware]

I recently gave it a face lift and replaced the original 100ohm 2watt resister on the variable. It works like a charm and looks good on the desk now.

 

[ShadowDelaware]

Before anyone gets offended I have dave made decals coming to me, they mailed them to me yesterday.

 

[BC Coyote]

800 watts seems like quite a bunch

Depends on if they are Dosy watts, Bird watts, or some other kind of watts !

 

[ShadowDelaware]

Depends on if they are Dosy watts, Bird watts, or some other kind of watts !

I'm calling them feel good watts