----- Original Message -----
From: "Bill, W6WRT" <dezrat1242@yahoo.com>
To: <amps@contesting.com>
Sent: Sunday, February 21, 2010 9:07 PM
Subject: Re: [Amps] 120 Hz hum from Henry...
> ORIGINAL MESSAGE:
>
> On Sun, 21 Feb 2010 14:40:05 -0500, "Carl" <km1h@jeremy.mv.com> wrote:
>
>>I guess you are unfamiliar with almost all commercial ham amps.
>>
>>Read a few schematics.
>
> REPLY:
>
> The ones I am most familiar with are Alpha and Command. The smallest
> filter I have seen there is 35 uF and most are in the 50's.
>
> You state you have a 24 uF filter and are complaining about poor
> regulation. Duh!
>
> 73, Bill W6WRT
Uhh....Im not complaining about the LK-500 regulation, simply stating a
fact.
Now if you want to look at the classic Alphas of the 7 series, Ameritron,
Ten Tec, Heath, Dentron, Drake, Swan, etc, etc, you will find them in the
17-33uF range....duh.
The latest series of some amps have more C as a result of capacitor
technology, not engineering brilliance.
Going back further to the 1963 NCL-2000 it is 10uF AS PER THE RCA specs for
the 8122's. Static regulation at 0 to 2000W is 16%. Dynamic is much better
for SSB.
Carl
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