>Well, we do..... there are diodes that will handle as much as 10kW.... but
>they are expensive. Harris uses them in their gear...
>
** What is the piv rating of such diodes, William?
>Sincerely,
>
>Dr. William J. Schmidt, II K9HZ
>
>"Collector of Edison Wind-up Phonographs... Do you have one for me?"
>Email: bill@wjschmidt.com
>Alternate Email: wmschmidt@charter.net
>WebPage: www.wjschmidt.com
>
>
>
>----- Original Message -----
>From: "on4kj" <on4kj@skynet.be>
>To: <amps@contesting.com>
>Sent: Sunday, June 15, 2003 2:44 PM
>Subject: [Amps] electronic switching
>
>
>> Hello Folks,
>>
>> About steatite wafers used for band switching.
>> Why dont we see switching systems based on pindiode, for input ( 100 w )
>> must be possible nowadays. Even for high output power !!
>> What say ?
>>
>> Jos on4kj
>>
>>
>> ----- Original Message -----
>> From: "Osten B Magnusson" <sm5dqc@algonet.se>
>> To: <amps@contesting.com>
>> Sent: Saturday, June 14, 2003 10:35 AM
>> Subject: [Amps] 572B's WARNING
>>
>>
>> >
>> >
>> > STAY AWAY FROM RICHARDSON ELECTRONICS, ENGLAND www.rell.com
>> >
>> > 572B's are sold here in Europe by different dealers, the tubes are
>> distributed by Richardson Electronics in England, and they claim that it's
>> Cetron tubes manufactured for National. Sorry to tell, but it isn't the
>> truth - it's newly produced Chinese tubes re-badged by Richardsons as
>> National and also have ''Made in USA'' printed on them. So be careful,
>> before buying. I have been offered, not by Richardsons, but by the
>> distributor to get a full refund if sending the tubes back. Richardsons
>does
>> not even answer e-mails...
>> >
>> > This is part of an e-mail from a serious distributor in England:
>> >
>> > >>Hello Osten,
>> > >>Taylor is a brand name for RF parts but these can be re-badged
>any
>> type!
>> > >>We have National 572B which are badged by Richardsons which is
>the
>> main
>> > >>outlet for Eimac, but need not be Eimac !
>> >
>> > There are original Cetron NOS 572B's available here in Europe, have a
>look
>> at www.clhi-fi.it It's in Italian, but click on ''Surplus'' and than
>> ''avanti'' to go to page four. There are no prices on the WEB, but in an
>> e-mail they asked 500 ''euros'' for a matched pair, plus postage. That's
>> totally USD 645 for a matched pair!!! I know that there are also NOS
>> Cetron 572B's available in USA, but unfortunately we have to pay more
>> postage, customs, 25 percent VAT etc. so here we always try to buy from a
>> European Community country, this was no customs and other extra charges to
>> pay.
>> >
>> > Probably time to get all ''glass tubes'' amplifiers marked ''junk'' and
>in
>> the future only get amplifiers with ceramic tubes!
>> >
>> > 73 de Osten SM5DQC e-mail: sm5dqc@algonet.se
>> >
>> >
>> >
>> >
>> >
>> > _______________________________________________
>> > Amps mailing list
>> > Amps@contesting.com
>> > http://lists.contesting.com/mailman/listinfo/amps
>> >
>> >
>>
>>
>> _______________________________________________
>> Amps mailing list
>> Amps@contesting.com
>> http://lists.contesting.com/mailman/listinfo/amps
>
>_______________________________________________
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>http://lists.contesting.com/mailman/listinfo/amps
Rich, AG6K, 805-386-3734, www.vcnet.com/measures
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