Yes, there is some good information floating around. However, it all
boils down to, in your words, having an accurate standard available. I
do not.

Another poster essentially suggested "close is good enough" - match the
slug against some other meter reading. I understand that reasoning,
and for the most part that's fine. However, I didn't buy a Bird to
calibrate against my MFJ. I want to know power out (+/- Bird
tolerance), not just estimate it.

I bet I have a dozen or more wattmeters, but I only have one Bird 43,
and I want it to be within spec.

It's starting to look like I should just borrow someone else's 2,500
watt slug known to be accurate, and then just adjust the pot in mine to
match! Anyone want to lend me theirs? ;-)


Ed wrote:

Now, I too am interested to see if anyone has any knowledge of doing
such thing - the procedure, equipment used, etc. IF it is something I
can do with my own - then by all means, I'll do it. I've got a
decently equipped bench.



IF - you have an accurate standard available to compare your Bird
Wattmeter against, then I see no reason you can not do a calibration on
your Bird Wattmeter Slug yourself.

The information you need is readily available.... in fact QST,
September 2006 issue, page 49, provides enough information for most hams
to figure out how to calibrate their Bird Meter's slug. The article
actually allows some rather neat features, too, if you are "slug" poor.


Ed K7AAT