[GreenKeys] 6AC7 tubes?

[Bruce Gentry]

6AC7 s are based the same as a 6SK7, but have a higher Gm, sharp 
cutoff,  and draw a bit more filament current. They were used 
extensively as an IF amp. in early FM and television receivers, as well 
as in the Hallicrafters S-30? "Ultra High Freqency" receivers.  They can 
often pep up a vintage general coverage receiver above 20MC. in the RF 
amp. position, but be aware of overloading and sometimes AGC problems.

        Bruce Gentry, KA2IVY


On 10/22/19 1:12 AM, hwhall at compuserve.com wrote:
> Is there any interest in 6AC7 tubes? I keep passing up a bunch that 
> are probably old stock in boxes because they don't seem to get any 
> interest at Ebay or elsewhere.  Should I buy some of these for anyone 
> in the Mailman radio groups?
>
> Thanks,
>
> Wayne
> WB4OGM
>
>
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