"Fred McKenzie" wrote in message
...
In article
,
"Richard Knoppow" wrote:

Thanks for the reply. It might be but I tried it with a
single 9V battery and it did not seem to be enough. Two
batteries in series allowed the cal adjustment to work
but I
don't want to just put 18V on it without knowing what the
actual required voltage is. I found a manual at a pay-for
site but its nearly as much as I payed for the tester.

Richard-

There is a 22.5 volt battery about the size of an AA cell,
except it is
square instead of round. I used one to convert the flash
in an old film
camera from two AA Cells to one 22.5 volt battery plus a
similar-size
electrolytic capacitor, as a "BC" flash system. With AA
cells, the
flash was not reliable. With the BC system, it never
failed to fire.

I'll look through my collection of manual links for the
890. The first
one I checked had an 870, with about 30 pages scanned as
individual GIF
images:

http://www.ko4bb.com/cgi-bin/manuals...Sorted/2_Misc_
Test_Equip/Hickok/870

Fred
K4DII

I am familiar with the battery you mean. The clip in
the tester is for something close to the size of a D cell
although just a little shorter. I checked with a variable
power supply and it seems to require around 18 volts to work
so I can use a couple of 9 volt batteries in series but I
would like to know what is supposed to be there. Anything
you can come up with will be welcome. The 870 is a much more
elaborate set, not much similar to what I have.


--
Richard Knoppow
Los Angeles
WB6KBL