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Re: [Amps] Many Unusual sources of HV and some amp parts are out there.

To: amps@contesting.com
Subject: Re: [Amps] Many Unusual sources of HV and some amp parts are out there.
From: Roger <sub1@rogerhalstead.com>
Date: Thu, 05 Feb 2009 20:25:54 -0500
List-post: <amps@contesting.com">mailto:amps@contesting.com>
Oops, I didn't get my sig on the original post.

Roger wrote:
> Rex Lint wrote:
>   
>> I'm surprised I hadn't found the connection between this industry and ours
>> before!
>>   
>>     
> I worked in the semiconductor industry for over 26 years.  We used RF 
> generators that ranged from 6 or 8 KW out into widely varying impedances 
> to some that were well into the hundreds of KW output.We also used RF 
> and DC plasma generators.
>
> When they modernized and got mostly out of the float zone single crystal 
> business they sold off a lot of the equipment.  I purchased two of the 
> small generators.  The plate transformers were single phase 440/408 
> primaries with center tapped 6600 volt secondaries.  One local ham 
> stripped out the RF deck which BTW contained a pair a Jennings vacuum 
> variable capacitors suitable to the tune and load caps for 80 through 
> 10. The smaller was motor driven.  He then put in a 4-1000.  He joked 
> that although he many not have had the most powerful ham amp but he most 
> likely had the heaviest.  The cabinet was about 4 X 4 X 4 feet made of 
> roughly 1/8" steel with a door on the PS and the RF deck sides.
>
> How heavy were these?  I don't have an actual figure, but I purchased 
> two of those "small" generators and brought them home on a pickup 
> truck.  We set up a block and tackle with skids to get them out of the 
> truck. As the last one made it to the skids I noticed the front wheels 
> "bouncing" and three of us jumped onto the front bumper as it headed up. 
> Three of us added enough weight to bring the front end down *slowly*, 
> but the generator which had made it to the skids wasn't going to stop at 
> this point.  The hope was that the front end would be down by the time 
> the weight was off the back end, but it was apparent that was not to 
> be.  *Fortunately* the front end only had about 3 feet to go when the 
> generator's weight shifted onto the skids.  All three of us jumped at 
> that point.
>
> All I can say is, Man! What a cloud of dirt!  I didn't realize that old 
> truck was hauling that much of mother nature around.
> I took one of the transformers down stairs by myself.  I'm still not 
> sure how I managed that as it took two guys to get the thing out of the 
> basement. (That's probably what's wrong with my back now <sigh>)It was a 
> nice, clean, open frame transformer with the windings on each leg, 
> shellacked and terminals for everything.
>
> BTW, I purchased those two generators for about $30 each.
>
> Many industries use RF generators and with the economy being what it is, 
> it'd probably pay to keep track of business auctions as well as putting 
> out some feelers to find out who uses what  in any particular area.
>   

73

Roger (K8RI)
>> Google 
>>
>>      RF Heat Sealer Replacement Parts.  
>>
>> Amazing!
>>
>>     -Rex-
>>
>>      Rex Lint, Consultant
>>      26 Brek Drive
>>      Merrimack, NH 03054
>>      PH:    603-860-7651    
>>
>>
>> -----Original Message-----
>> From: amps-bounces@contesting.com [mailto:amps-bounces@contesting.com] On
>> Behalf Of butwheat
>> Sent: Wednesday, February 04, 2009 10:15 AM
>> To: amps@contesting.com
>> Subject: [Amps] Unusual source of HV and some amp parts
>>
>> Strange place to find this stuff:
>>
>> http://www.landlmachinery.com/Parts.html
>>
>> HTH,
>>
>> Mark KX8XX
>> ...-.-
>>
>> .
>>
>> .
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>>   
>>     
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