Re: {Collins} Cetron 811A Blues and Surplus Sales



I had zero issues with rf parts tubes...many tubes bought and no failures



> On May 25, 2015, at 5:04 PM, Peter Wittenberg Sr <K2LRC@xxxxxxxxx> wrote:
> 
> Joe, I have had a very similar reply from Bob in Surplus Sales after being a long term multi purchase buyer of these Cetron 811A's. I had two tubes burn out, in two different 30L-1's, at turn on after having then for a few weeks.  He replaced one and fought me over the second one. Most all of the tubes had loose bases and some had loose top caps.
> 
> A month or so later I went to order another three sets of 4 matched 811A's from him and he refused to sell me any more tubes and blamed me for misusing the tubes in my application.  I still have a copy of his email..
> 
> Certainly not a Customer Oriented shop or people...
> 
> -73- Peter K2LRC
> www.k2lrc.com
> God Bless America !
> 
> "When they call the roll in the Senate, the Senators do not know whether to answer "present" or "not guilty."  Theodore Roosevelt !
> 
> Limit all politicians to two terms.
> One in office, One in prison.
> It works: Detroit and Chicago already do this.
> 
> 
> 
> -----Original Message-----
> From: Collins [mailto:collins-bounces+k2lrc=k2lrc.com@xxxxxxxxxxxxx] On Behalf Of Joe
> Sent: Monday, May 25, 2015 1:12 PM
> To: collins@xxxxxxxxxxxxx
> Subject: {Collins} 811A Blues
> 
> Guys,
> 
> Back about 18 months ago, I acquired a RE 30L1 but the guy shipped it with the tubes in. There was a pair of Cetron's and a pair of nice RCA's. As it would be one on each pair came loose and broke. With help from the seller I purchased 3 brand new Cetrons from Surplus Sales of Nebraska. Now I'm pretty experienced engineer who held a general class ticket in 1963 at the age of
> 13 so I didn't just fall off the turnip truck. Anyway after going through the amp and installing the tubes she came up fine on all bands into my dummy load. The amp sat for about a year and was never put on the air so I had no more than 30 minutes on the tubes. Then I decided to put the amp into service and prior to powering up I noticed white crystals around the base and plate caps on all three tubes purchased from Surplus Sales. The remaining Cetron from the original purchase seems fine, no white crystals at all. I removed the top two 811s and right away the plate cap was loose. I took pictures of both the tubes I removed and the remaining ones in the bottom and sent a nice email to Surplus Sales explaining what had happened, here is his reply:
> 
> JOE,
> 
> THE WARRANTY IS 30 DAYS. LOOKS LIKE WE HAVE ABOUT 2 YEARS HERE. THE TUBES ARE NOT COVERED FOR REPLACEMENT.
> 
> THERE WAS NOT A "BAD LOT OF TUBES" ELECTRICALLY. EVERY SINGLE 811A WE HAVE SOLD HAS PASSED AN RF TEST BEFORE SHIPPING. WHAT WE DID FIND IS THAT IF GUYS GOT A LITTLE ROUGH WITH THE INSTALLATION, THE CAPS COULD COME LOOSE. THE WHITE CRYSTALS ARE AN AFTER EFFECT FROM THE GLASS CEMENT THAT WAS USED TO REINFORCE THE CAPS AND BASES. IT DOESN'T HURT ANYTHING. IF YOU HAVE A LOOSE PLATE CAP THAT MEANS YOU EVEN TORQUED IT ENOUGH TO BREAK THE BOND ON THE NEW CEMENT.
> 
> BOB  WD0FDE
> 
> 
> I have since removed the other two tubes and not only are the caps loose but so are the bases. I want to know if this guy is being honest with me because I can't see how this could of happened, I know my handling was not the cause of this. I happen to own another 30L1 with RCA tubes and have never seen anything like this. 
> 
> Any input would be appreciated
> 
> Joe KV4PN
> 
> 
> 
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