It was actually an modification, replacing a 2SC3553 with the NTE342
part for an increase in power in a QRP HF transceiver (other minor
changes to the circuit as well) - freq range from 3.5 to 30 mHz.
Leads are short. The NTE part definately runs hot even at 3 watts
output. Heatsink is bolted to the back using thermal compound.

On 12 Apr 2005 12:43:59 -0700, "Mark" wrote:

what was the original transistor part number

what frequency are you operating at

are the leads all very short, especially the emitter lead

Mark