I have a pretty good stock of original and red dot Toshiba transistors, if anyone is interested....
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Texas Star DX500 max input?
- Thread starter bestro
- Start date
Wow I sometimes laugh at my older posts. I could have toned it down a notch or two.
Today these drive levels are rolling the dice, on a very large bet.
I still have this same 500, it has lasted going on 40 years now and the reason is I keep output below 400 watts on a peak reading meter.
It has seen some abuse, I once got the mic stuck down in the seat, radio and amp keyed on AM until it flattened the batteries in my truck.
It literally melted the meter out of the amp, not dripping but melted enough that it fell loose from the face of the amp.
I replaced the meter and it still works as well as the day I bought it.
Removing the poor fuse holders, upgraded power wires and a fan and the 500 is a very good amp when run below the 400 watt level.
At the cost of original Toshiba transistors for me it's not worth beating on it.
73
Jeff
This is what I found in Google. If that amp has HG pills, I think it’s lower PEP. Maybe somebody knows that info.
Yes that is a new version with HG finals. That is a very steep price. For that kind of money I would just have one built below. Just add the class B bias and SSB delay, still cost less and comes with a fan.
400hd - Carl Built
400 4×2879, Class C bias, fan cooled. Max amp draw 70a, install recommended with 4ga wire and 100a fuse. Max input carrier of 8w or 180w max carrier from amp. Max peak input 100w.
carlbuilt.net