[Milsurplus] [Boatanchors] Mercury Rectifiers

[Ray Fantini]

There are solid state replacements that plug into the same socket. I have used them in old tube type broadcast transmitters with no issues and never a failure. If for some weird reason you wanted all original just pull them out and stuff the tubes back in.
RF

-----Original Message-----
From: milsurplus-bounces at mailman.qth.net [mailto:milsurplus-bounces at mailman.qth.net] On Behalf Of J. Forster
Sent: Monday, April 23, 2012 1:42 PM
To: Todd, KA1KAQ
Cc: boatanchors at mailman.qth.net; Jim Wiley; milsurplus at mailman.qth.net; boatanchors at puck.nether.net
Subject: Re: [Milsurplus] [Boatanchors] Mercury Rectifiers

Thanks everybody.

I neglected to explain these 866s are in an MC 1 Battle Announcing system on a Museum Ship.

We want to keep it as original as possible, but have had issues with the 866s blowing over.

Thanks all,

-John

==================





> Yes I did. Sorry I wasn't more clear about that. It's one of those 
> assumptions made after decades of experience, figuring others must 
> posses the same knowledge. Clearly not a good assumption to make in 
> matters of HV!
>
> ~ Todd,  KA1KAQ/4
>
> On Mon, Apr 23, 2012 at 12:03 PM, Jim Wiley <jwiley at alaska.net> wrote:
>
>> **
>> He means filaments only - no plate voltage.  30 minutes or so should  
>> do the trick.
>>
>>
>> - Jim, KL7CC
>>
>>
>>
>> Todd, KA1KAQ wrote:
>>
>> On Mon, Apr 23, 2012 at 11:31 AM, J. Forster <jfor at quikus.com> 
>> <jfor at quikus.com> wrote:
>>
>>
>>
>>  Hi,
>>
>> Is there an issue with Mercury pooling in rectifiers, like the 866, 
>> in long term storage that would cause them to blow over more easily?
>>
>> If so, is there a fix?
>>
>>
>>
>>  AFAIK John, you simply need to run the rectifiers at temperature for
>> 10-15
>> minutes (a half hour is even better) to re-vaporize the mercury. I've 
>> also seen guys roll the tube around to spread the mercury into a 
>> thinner surface coating to speed things up. Not sure if that's 
>> required.
>>
>>
>


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