[Amps] 4cx350f/j's

[Steve Katz]

> Any of you fellas ever apply these to a project for amateur amplification?
> Is 
> there any disadvantage to the 26.5 volts on the heater, or does it just
> heat 
> quicker? Not much info on Rell's page via Richardson's Electronics. Let me
> 
> know.
> Paul...N2TZV
> 
	[Steve Katz]  The advantage of 4CX350Fs is that they're often found
new surplus very inexpensively.  I've used them for many years, can't tell
any difference in operation between the 350F and a 250B, and never had to
perform any circuit alterations other than the filament transformer.  I
don't recall the 350F heating up any quicker than a 250B -- and I always
used a 120 second timer to assure warmup prior to hitting the tube with
drive, plate or screen voltage. -WB2WIK/6


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