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Fairbanks Morse Model 8a Problem
#5

I should say that I have voltage to the rf coil only on the shortwave bands when the 6k7 has the voltage also. Even then plate  voltage is 300v and pin 4 is 150. On Broadcast band that particular 6k7 (rf?) only has heater voltage 6.3 ac  the other 6k7 (if)has voltage all the time 300v plate 150 at pin 4..Sorry if did not make that clear.  

With the radio on shortwave and all tubes showing plate voltage....voltage is still 300v plate 6k7's and at the 5y3, bias is -55v at the filter, -60v at the 5y3. 

Thanks,
Bob


Messages In This Thread
Fairbanks Morse Model 8a Problem - by bm071 - 01-15-2016, 10:23 AM
RE: Fairbanks Morse Model 8a Problem - by bm071 - 01-18-2016, 10:24 AM
RE: Fairbanks Morse Model 8a Problem - by bm071 - 01-18-2016, 10:40 AM
RE: Fairbanks Morse Model 8a Problem - by bm071 - 01-18-2016, 08:37 PM
RE: Fairbanks Morse Model 8a Problem - by bm071 - 01-20-2016, 10:19 AM
RE: Fairbanks Morse Model 8a Problem - by bm071 - 01-20-2016, 06:55 PM
RE: Fairbanks Morse Model 8a Problem - by bm071 - 01-20-2016, 06:59 PM



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