Well where it was being used (63mhz) in pulsed
service using 10kv on the plate, the schematic etc.
one can use their tricks easily on 1/3 that freq...
Sent from my iPad
> On May 23, 2017, at 19:16, Jeff AC0C <keepwalking188@xxxxxxxx> wrote:
>
> Uh huh. There is Cout that is manageable -- and then there is the YC156. I
> am pretty sure that anyone who has actually been-there, done-that with this
> tube - would use the term "easily" in conjunction with the work needed to
> make that tube and the upper bands play together.
>
> 73/jeff/ac0c
> www.ac0c.com
> alpha-charlie-zero-charlie
>
> -----Original Message----- From: Bill Turner
> Sent: Tuesday, May 23, 2017 6:53 PM
> To: Amps group
> Subject: Re: [Amps] new amp race
>
> ------------ ORIGINAL MESSAGE ------------(may be snipped)
>
>> On Tue, 23 May 2017 16:46:59 -0500, you wrote:
>>
>> The second and more serious
>> issue is the Cout on the YC156 is massive. Getting that tube to run on 20m+
>> takes work. It can be done but it is a challenge even if you have serious
>> skills and time. Of course on 40m & below, the Cout is not a problem.
>>
>> 73/jeff/ac0c
>
> REPLY:
>
> Easily fixed with the L-network described in any recent ARRL handbook
> in the amplifiers section. Requires just one small coil in the plate
> lead and like magic, the Cout problem is gone.
>
> 73, Bill W6WRT
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