Carl wrote:
>
>----- Original Message ----- From: "Ian White GM3SEK"
><gm3sek@ifwtech.co.uk>
>To: <amps@contesting.com>
>Sent: Saturday, November 27, 2010 3:06 AM
>Subject: Re: [Amps] Tube Cooling..
>
>
>> Carl wrote:
>>>
>>>Top down cooling is the norm in many coaxial cavities at VHF/UHF. My
>>>Collins 432 MHz military amp with a 2.75KW dissipation tetrode runs
>>>that way and it was used as an AM linear at 1000W out. A seperate small
>>>blower cools the input side. Due to the TX/RX relay and the coax going
>>>to the hardline and antennas I cant run it even close to its capabilities.
>>>
>>>I'll also be using that method at 1296 with a pair of GI-7B's unless I
>>>decide to go with water cooling.
>>>
>>
>> Do you really mean "downward through the anode cooler", Carl?
>
>Yes
>
>Carl
>KM1H
So the entire anode cavity fills up with hot air...
Collins contributed many excellent ideas to the amplifier gene pool, but
that certainly wasn't one of them.
--
73 from Ian GM3SEK
http://www.ifwtech.co.uk/g3sek
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