45w into one 2879

[dave457]

.......lol

 

[FlatlandBusa]

That's not going to last long...

 

[sp5it]

C-class splatterbox

 

[FlatlandBusa]

C-class splatterbox

Definitely. I drive a 8 pill with 90 watts and that's pushing the 8 past linearity.

 

[BC Coyote]

Good Grief !

 

[Enterprise312ok]

Definitely. I drive a 8 pill with 90 watts and that's pushing the 8 past linearity.

The Hg 2sc2879C Is a whole other animal Than the Toshiba 2sc2879. I have a Texas star 1600 with toshibas That will key 100 with 2 watts drive. I have a Paladin Tx-800 with 4 Hg 2879c that will key 100 with 10 watts drive. At vehicle voltage.

 

[AudioShockwav]

I think the gain is lower on the "C" suffix and that is why they require more drive.
Somewhere there is a spec sheet floating around that claims 150 watts out of The C and only 100 out of the straight 2879@12v
That that with a grain of salt.

73
Jeff



I suspect that the run of " fake" Toshiba's that all have the same lot number were actually hg2979c with Shiba printed on them. They seem to work well....

 

[Enterprise312ok]

The 2879c is not the same as the fakes tx star was using. The fakes work with only minor tuning changes to the circuit. The 2879C requires different winding of the input and output transformers to function properly.

 

[AudioShockwav]

The 2879c is not the same as the fakes tx star was using. The fakes work with only minor tuning changes to the circuit. The 2879C requires different winding of the input and output transformers to function properly.

Good to know, there is not a lot of info out there.

73
Jeff

 

[Shockwave]

These are impressive numbers that were commonly achieved with the original part.

 

[FlatlandBusa]

The Hg 2sc2879C Is a whole other animal Than the Toshiba 2sc2879. I have a Texas star 1600 with toshibas That will key 100 with 2 watts drive. I have a Paladin Tx-800 with 4 Hg 2879c that will key 100 with 10 watts drive. At vehicle voltage.

They will do impressive meter numbers, I have never seen a C box that wasn't starting to spread out by the time it reached 150 watts per pill.

 

[Enterprise312ok]

The 2 pill 2sc2879c with a built in low pass filter will do 500 nice and clean on the spectrum analyzer, throw in a true regulated ab bias circuit and you have ham level performance.

 

[Eldorado828]

The 2 pill 2sc2879c with a built in low pass filter will do 500 nice and clean on the spectrum analyzer, throw in a true regulated ab bias circuit and you have ham level performance.

Who builds it? I'd like to have one of those.