[Boatanchors] Capacitor Bridge Reccomendation

Wed Nov 11 00:21:45 EST 2009

Hats off to Larry for his generosity.  Here is San Diego, lots of gear has
been donated to the radio room of the Midway Carrier Museum.

I have a Sprague TO3, which I believe is similar to the TO4.  (Have never
found a manual or any info on the TO3)
It is perfect for what you need.  It has continuously variable voltage, with
a leakage current meter with a few ranges, and no need to hold a switch to
monitor.  I have a couple of Heathkit cap checkers, but they use eye tubes
for monitoring current, and some of the larger high voltage caps will, when
good, have more leakage current than will open the tube, so it's necessary
to use a milliameter in series with the cap to measure the leakage.  The
Sprague is a very nice bridge and leakage tester, and I use it often to
re-form caps.  The bridge uses an eye tube, but just to indicate balance in
the bridge.  Just be careful of the high voltage exposed when using the
leakage function.

Again, congrats to Larry for his generosity.

Ron K2RP

-----Original Message-----
From: boatanchors-bounces at mailman.qth.net
[mailto:boatanchors-bounces at mailman.qth.net] On Behalf Of Larry WA9VRH
Sent: Tuesday, November 10, 2009 6:00 PM
To: jfor at quik.com; Christopher J. Nardi
Cc: boatanchors at mailman.qth.net; vintage-military-radar at yahoogroups.com;
boatanchors at lists.tempe.gov
Subject: Re: [Boatanchors] Capacitor Bridge Reccomendation

Hi John,

That's the least I can do. Being it Central Illinois it would be real tough 
to get a Battleship up the Illinois river! However there were LST's built 
about 40 miles North of here. A couple of years ago LST325 (I think that is 
the number) visited here and both my wife and I enjoyed visiting it.
My wife is actually more of a WWII historian than I am. Probably because her

Dad was involved.

I will let you know how my tests work out. Actually sisnce I have my Eico if

either of the TO-4s work I will send it to you. Would you give me an address

that I should send it to.
Please keep up the good work keeping these very important historical 
monuments intact.

73 Larry WA9VRH

----- Original Message ----- 
From: "J. Forster" <jfor at quik.com>
To: "Larry WA9VRH" <wa9vrh at dishmail.net>; "Christopher J. Nardi" 
<curator at battleshipcove.org>
Cc: <boatanchors at mailman.qth.net>; <boatanchors at lists.tempe.gov>; 
<vintage-military-radar at yahoogroups.com>
Sent: Tuesday, November 10, 2009 7:45 PM
Subject: Re: [Boatanchors] Capacitor Bridge Reccomendation

> Hi Larry,
>
> That's very, very kind of you. The folks at the Massachusetts are working
> very hard to get these things operational. I'm CCing a copy of this email
> to Chris Nardi, the Curator of Battleship Cove.
>
> Thanks again,
>
> -John
>
> ==============
>
>
>> Hi J. Forster,
>>
>> I have an Eico 950 that I built in high school so I don't want to dispose
>> of it.
>>
>> However I have two TO-4 Sprague testers.  I will check out both of these
>> over this next weekend and if
>> both work I will send you one. I believe I have the manual and I will
>> include a copy of it also. They may need some
>> caps replaced and some TLC but neither of them have been abused.
>>
>> I will be happy to donate one of them to the Battleship Massachusetts
>> along
>> with the shipping to get it to you.
>>
>> Thanks for all you do to help keep these Battleships for all to remember.
>>
>> A number of years ago my wife and I were privileged to experience the
>> Arizona (which unless you have been there and seen the diesel fuel still
>> bubbling up)  It was a very moving experience. Seen it on tv many times
>> but
>> nothing like being there in person. The same with standing on the deck of
>> the Missouri where the instrument of surrender was signed.  We both look
>> forward to going back and doing it again.
>>
>> 73 Larry WA9VRH
>>
>> ----- Original Message -----
>> From: "J. Forster" <jfor at quik.com>
>> To: <boatanchors at mailman.qth.net>; <BOATANCHORS at LISTS.TEMPE.GOV>
>> Cc: <vintage-military-radar at yahoogroups.com>
>> Sent: Monday, November 09, 2009 11:31 PM
>> Subject: [Boatanchors] Capacitor Bridge Reccomendation
>>
>>
>>> I'm looking for a good Capacitance Bridge and Leakage Checker for the
>>> Battleship Massachusetts. I'm thinking of something along the lines of a
>>> 60s+ vintage Eico, Heath, or similar unit.
>>>
>>> The basic requirements are:
>>>
>>> Cap Range:  <100 pF to >100 uF.
>>> Leakage to:  >450 VDC, 600 VDC or higher a real plus.
>>> Manual:  Included or readily available.
>>>
>>> It's main use will be to check oil filled caps in WW II radio and RADAR
>>> gear.
>>>
>>> I'm think something like the Eico 955 or 965. Price is an important
>>> consideration.
>
> 

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