[time-nuts] CRT for Tracor 527A

[Clint Jay]

A little extra heater voltage and allowing the tube to 'cook' a while can
help as can a CRT rejuvenator but the cathode is usually tiny on a mono
tube and  from experience with television repairs back in the dawn of my
career, they very rarely last any length of time after rejuvenation before
emission dies off again.

YMMV, a NOS tube may respond better and if you've gone from nothing to
something it may be worth taking the gamble, especially if the tube you're
replacing is badly burned in.

On 20 Jun 2017 11:00 pm, "Brooke Clarke" <brooke at pacific.net> wrote:

> Hi:
>
> Yes, there are Cathode "Rejuvenators" that can sometimes give a CRT some
> more lift.  This is a problem with all test equipment that uses CRTs.
> There are LCD replacements for the CRT in some HP equipment, like the 8566
> SA.
>
> --
> Have Fun,
>
> Brooke Clarke
> http://www.PRC68.com
> http://www.end2partygovernment.com/2012Issues.html
>
> -------- Original Message --------
>
>> Hello to the group.
>> I was not going to comment on the thread. But realized I should.
>> A caution on CRTs is that if they have been around a long time they may
>> have very poor emissions. Even if new. Cathode pollutes over time.
>> Just saying don't be to surprised if you don't get what you paid for.
>> Best of luck to you.
>> Regards
>> Paul
>> WB8TSL
>>
>> On Tue, Jun 20, 2017 at 5:12 PM, Pete Lancashire <pete at petelancashire.com
>> >
>> wrote:
>>
>> Not rare but uncommon. I gave the one I have away a couple years ago. Ask
>>> on a few of he military/boatanchor lists, I've had pretty good luck.
>>>
>>> -pete
>>>
>>> On Tue, Jun 20, 2017 at 2:01 PM, David C. Partridge <
>>> david.partridge at perdrix.co.uk> wrote:
>>>
>>> Trying a long shot here, I'm looking for a 1" CRT type 1EP1 (or 1EP11,
>>>>
>>> or?)
>>>
>>>> for a Tracor 527A Frequency Difference Meter.
>>>>
>>>> I did spot some on eBay but the vendor had a rather high opinion of
>>>> their
>>>> worth :) at over 300 dollars
>>>>
>>>> Anyone got one to spare?
>>>>
>>>> Thanks
>>>> Dave
>>>>
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