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Author Topic: WHAT IS CONSIDERED A DRIVER TOOB-VIKER2  (Read 4276 times)
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ve6pg
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« on: June 07, 2006, 05:16:57 AM »
..HI FROM TIM...OUTTA TOWN,SO DONT HAVE THE INFO WITH ME...WHAT IS CONSIDERED THE DRIVER TOOB IN THE VIKING2?...MY VIKER IS LOSING POWER,THE LONGER I TRANSMIT...FINALS ARE FB,SO I'M THINKING THE DRIVER...ANY THOUGHTS?...TIM...SK..
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...Yes, my name is Tim Smith...sk..
KB2WIG
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« Reply #1 on: June 07, 2006, 09:03:44 AM »
5763 ... You just want the tube number..  right?        klc
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WA1GFZ
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« Reply #2 on: June 07, 2006, 10:56:21 AM »
6AQ5 driver
6AU6 multiplier and VFO


I wish it was a 5763
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W1FRM
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« Reply #3 on: June 07, 2006, 12:16:42 PM »
While you're at it, check on another common problem with
the vikers (as well as valiant and ranger):  The "drive pot"
that adjusts the screen voltage on the driver toob to
set the grid drive to the final, often fails due to the fact
that it is under rated for the power it must dissipate. 

Sometimes before they actually fail, they can get
mushy/flaky and  cause a loss of grid drive.  A good way
to prevent the failure is to put a 10K resistor in series
with the drive pot.
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KB2WIG
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« Reply #4 on: June 07, 2006, 02:35:30 PM »
Quote from: WA1GFZ on June 07, 2006, 10:56:21 AM
6AQ5 driver
6AU6 multiplier and VFO


I wish it was a 5763

 It taint?
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ve6pg
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« Reply #5 on: June 07, 2006, 02:57:52 PM »
..OK..IF IT IS THE DRIVE POT,(I'VE HERD ABT THIS FER THE DX100),AND IT IS BAD,WHAT VALUE OF RESISTANCE,AND WATTAGE WOULD YOU REPLACE IT WITH?...TIM...SK...
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...Yes, my name is Tim Smith...sk..
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