I have a Texas Star 667V I want to put on 10 meters.

I want to disable the pre-driver (2SC2290) to allow for higher input power.

Has anyone done this? Or know how to do it?

If you are a competent tech, could you check the schematic and get me going in the right direction?

Any help would be greatly appreciated!

Thanks.

It's been done many times. You should be in luck, many here posses that wisdom.

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You should be able to compare it to a texas star 500 schematic and make the nessasary disconections . Go to cbtricks.com and look at both schematics . Good luck

"I want to disable the pre-driver (2SC2290) to allow for higher input power."

how much input power?

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292 Radio Shop / FireCommunications Network
The Technicians Exchange    ASH    Ref

25-50 Watts PEP/15 Watt carrier (FM)

Thank you everyone for your input so far!

This should not be hard, but if done wrong poof! $$$

20WPEP into 4X2SC2879's @ 13db. Minimum Gain = 400WPEP Out.
15W in for FM is good.

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292 Radio Shop / FireCommunications Network
The Technicians Exchange    ASH    Ref

The power input sounds perfect, especially for FM.

Here is the original schematic, and then my butchered version. Feel free to laugh, flame etc.

But what to do with R7 and R10, if anything?


Original:

Extra tasty crispy:

Why in the world did they delete my pic?

I will repost it.

Probably has something to do with their TOS.

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When I die, I want to go out just like my Grandpa did, in his sleep, and not like the screaming passenger on his motorcycle...

Thank you!, as I did not keep a copy.