If a driver is bad.

Oldtimer · Post by **Oldtimer** » Tuesday 9th Sep 2008, 5:47

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Howdy.
If the driver is bad in a Cobra 29 will it rx and not tx.
What does the driver do?
Thanks to all who answers.
GOD BLESS

timrim · Post by **timrim** » Tuesday 9th Sep 2008, 6:34

Yes, it will still receive if the driver is bad. The driver is the amplification stage that supplies the rf signal to the final to be further amplified.

Oldtimer · Post by **Oldtimer** » Tuesday 9th Sep 2008, 8:23

How do I check a driver?
Thanks

timrim · Post by **timrim** » Tuesday 9th Sep 2008, 8:51

What test equiptment do you have? The easiest way is to look at the output on a scope. Make sure you have a stronger signal on the collector and a weaker signal on the base. If you don't have a scope, then you will need to pull it and either check it with an ohm meter or a transistor checker.

If you need to pull it and check it, follow the instructions on this webpage:

http://www.mikroe.com/en/books/keu/11.htm

Oldtimer · Post by **Oldtimer** » Tuesday 9th Sep 2008, 9:51

I removed the driver and the #'s are
C2341
F 4m
Can this driver be identified with those numbers.
Where can I find one?
Thanks

timrim · Post by **timrim** » Tuesday 9th Sep 2008, 11:06

You must have a newer model, most of the older ones are 2SC1957. The newer ones do use the 2314.

Oldtimer · Post by **Oldtimer** » Tuesday 9th Sep 2008, 12:24

Any ideas where a fella can get one?
Thanks

timrim · Post by **timrim** » Tuesday 9th Sep 2008, 13:38

Yes, www.rfparts.com , when you do a search there, search for "2SC", It will give you a listing of all the "2SC" series transistors. They can also be ordered directly from Cobra.

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If a driver is bad.

If a driver is bad.

Checking a driver

driver

Where can I get one?