Carl wrote:
> Google is still your best friend. One has to be into VHF/UHF to know about
> Steve's products.
>
I have a link to his site on my page. What I haven't figured out is why
the 6-meter amp is export only when it's a legal limit amp with the same
tubes as the other amps unless it hasn't been approved yet.
Man, just think, a pair of 3CPX-800s for local packet! <:-))
73
Roger (K8RI)
> Carl
> KM1H
>
>
> ----- Original Message -----
> From: "Ron Youvan" <ka4inm@tampabay.rr.com>
> To: "amps" <amps@contesting.com>
> Sent: Saturday, November 07, 2009 7:46 AM
> Subject: Re: [Amps] PSU design question
>
>
>
>>> I float B- above ground with roughly 125 ohms of R, in one case
>>> (separate PSU & RF deck) with 2 separate 250 ohm 25w Rs, one in each
>>> chassis, as well as a 1N5408 & .01 3kv cap on each side as well a la
>>> Lunar
>>> Link.
>>>
>> I have never seen this and I do not understand a reason for this
>> practice with one exception,
>> that being where a tube element is grounded and that element needs
>> monitored and protected, such as
>> a klystron where the "body" (cavities) are grounded but must not have more
>> than 100 mA of current.
>> I am not sure if this design isn't providing grid bias inadvertently in
>> some amplifier designs,
>> bias that might vary for varying plate current.
>> I can't recall what a "la Lunar Link" is, I don't know if I ever heard
>> of it.
>> --
>> Ron KA4INM - Remember, the government cannot give anything to anyone
>> that they have not first taken away from someone else.
>> (like you and me)
>>
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>>
>
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