[Amps] Please help ID this ETO PA chassis

[Jan Svabenik]

Hi!

It's a Chassis from a ETO S21-64D. Used for 1.5T MRI Imaging. (64MHz) The
original ETO Amp is capable of  > 25kW Impulse Power and 5kW cw. The first
stage is a SS amp.

Somewhere i have schematics flying around. I will look for it.


Regards

Jan

On 09.03.11 17:35, "Carl" <km1h at jeremy.mv.com> wrote:

>Id be interested in the driver and final tank circuits if they will not
>be 
>used. They would be nice to have just to study.
>
>Carl
>KM1H
>
>
>----- Original Message -----
>From: "Keith Morehouse" <w9rm at yahoo.com>
>To: <amps at contesting.com>
>Sent: Wednesday, March 09, 2011 10:46 AM
>Subject: [Amps] Please help ID this ETO PA chassis
>
>
>> AMPS-listers:
>>
>> I needed a quicky chassis to prototype a new PA and recently purchased
>> this on
>> EBay:
>>
>> 
>>http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&rt=nc&nma=true&item=1206914
>>60254&si=Zi9jCTjwufxwdIxjeQ30O0sC%252BAM%253D&viewitem=&sspagename=STRK%3
>>AMEWAX%3AIT
>>
>>
>>
>> What I received is a date-code 1991 ETO PA+IPA chassis, originally
>>using a
>> 3CPX800A (under chassis mount) driving a YC-156 (the custom spec
>> 3CPX5000A7
>> socket-less tube).  I assume this was either a prototype (or short
>> production
>> run) MRI 1.5T or 3.0T amplifier.  Looking at the PA compartments
>>matching
>> components, it's obviously a mid-VHF network, probably somewhere right
>> above
>> 6M.  I'm not recently schooled in MRI engineering, but I believe there
>> were (are
>>
>> ?) units that operated around 60 MHz.  Since my proto is for 50 MHz,
>>I'd 
>> like to
>>
>> try and use as much of the existing system as I can.
>>
>> Referring to the EBay pictures, can anybody ID the original operating
>>freq 
>> of
>> this chassis ?  Does anybody (John, W0UN ?) have any design info on it
>>? 
>> It has
>>
>> several ETO P/N's, including several in the series of MSX-X9**.  The
>>date 
>> code
>> is May 1991.
>>
>> Whatever it turns out to be, it looks like it'll cut a lot of time off
>>my 
>> design
>>
>> since I won't have to cut much metal and it has a real nice blower +
>>nice 
>> usable
>>
>> "stuff" included.
>>
>> TIA
>>
>> Jay W9RM
>>
>> Keith J. Morehouse
>> RF Specialists Inc
>> PO Box 849
>> Hampshire IL 60140
>>
>>
>>
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>
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