Friday, December 28, 2007

GI7B Six Meter Amplifier Project - Update 7

Last evening round up all connections and perform initial test at the input SWR. At firs, the SWR is quite high with 1:3 , modified the coil to 4 turn 13 mm dia. with good result at 1:1.2.

After that, connect plate voltage and measured the plate idle current at 80mA, which indicated it is correct.

Now the amplifier is ready to go for load test.