Driver Chassis
1. Added C11 , C13 330pF micas on the Q3, Q4 2SC2879's collector to ground.

2. Added a 6" #14 gray teflon jumper from next to relay on driver PCB ground to Final Amp PCB #3 ground.

3. R5 was removed from across R4.

4. C8 was changed from 470pf mica to 190pf mica.

5. Wire lead "d" @ T1 xfomer. is connected to R5 a 10 ohm 2W to driver PCB ground.

6. F1 30A ATC fuse on driver PCB was changed to 20A ATC fuse.

7. C21 was changed from 2200uF 35VDC to 6800uF 25VDC.

8. R12 was changed from 1.6ohm to 1.8 ohm.

9. Q1 & Q2 where changed from 2N4125 to PN 2907A.

Final Amp Chassis
1. C11, and C32 where changed from 2200uF 35VDC to 6800uF 25VDC.

2. Added C56 a 33pf mica from RV1 pot, where the coax center conductor connects to RV1 solder lug, to #1 PCB ground.

3. C55 was changed from 150pF to 120pF mica at input of toroid L1.

4. Two 100pF metal micas C48 and C49 in series and mounted in front of relay RL1 on PCB # 4 replaces C48, C49, C50 225pF micas.

5. Added a F1 5X20MM, 1amp fuse in series with radio (input) connector's center conductor to mini coax's center conductor.

Changes Mid 2007

Bias Relay Update - The relay RL2 is the new bias relay part number Fujitsu LZ-12VM-K, SPST-NO, 10 amp.

See Schematic for changes

Text Version of the Updates