[AMRadio] Nice find at tailgate swap yesterday

[russ dworakowski]

Yes Mahlon,  the IT-28,  which is what I have is a real winner.  I am real 
fussy about my test gear,  the balance adjustment is a bit tweaky,
but you can test them down to a few pf.  Fixed a lot of stuff using this 
item.    Russ.


>From: Mahlon Haunschild <mahlonhaunschild at cox.net>
>Reply-To: amradio at mailman.qth.net
>To: amradio at mailman.qth.net
>Subject: [AMRadio] Nice find at tailgate swap yesterday
>Date: Sun, 22 Sep 2002 18:45:23 -0500
>
>
>Hello, list.
>
>Picked up an older Heathkit IT-11 capacitor checker at a tailgate swap
>yesterday for $10.  I've been shopping 'round for something more
>sophisticated, like an old Sprague Tel-Ohm-Ike analyzer, but hey, for
>$10,  who cares?
>
>Gotta tell ya, this unit is way more capable than I thought it was going
>to be.  The leakage test can be conducted at any voltage from 3 to 600
>volts, which should cover most anything we are likely to come in contact
>with in our boatanchors.  And the capacitance bridge is reasonably
>accurate,
>too.  Additionally, it can be used to determine transformer turns
>ratios.
>
>If you find one of these, know that apparently the older version of the
>IT-11 used paper capacitors in the bridge circuit, which I had to
>replace with polyesters before the thing would work properly.  The old
>wax-covered paper capacitors leaked like sieves.
>
>The IT-28 is apparently the same design, just in the newer tan-colored
>Heathkit paint scheme.
>
>The only drawback that I can think of is that these testers use a 6E5
>eye tube, which is hard to come by.
>
>The later version of the IT-11 and, I imagine, all of the IT-28s have a
>dual-voltage power transformer.  Mine is 117 VAC only.
>
>--
>regards,
>
>Mahlon - K4OQ
>
>Icom IC-756 / IC-765 / IC-821 / IC-W32A
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