[Amps] bird meters

[Steve]

I don't think you can hurt the slug by winding up the power until it 
gives 100uA, so DIY testing against another meter is ok.

If you prise off the sticky label there's a trimpot accessible through a 
hole in the top piece. If it's not quite aligned to get a trimtool at it 
the top comes off easily. I have no idea What range of adjustment that 
will give you, or what it does to the 'law' on the scale.

On a 100B element here the trimmer is 25k. I was able to adjust it to 
read 250W FSD on a regular 43 thruline. I don't recall how the scale 
accuracy fared at lower power, I wasn't interested.

Steve

> I have a couple of BIRD 100ua meters 2150-090 es 091
> if I use these on my thruline 4522-002-8 50 ohm with 43 slugs wot  
> error will I see?? as these slugs are for 30ua..meters!!
> or can I recal the slugs es if so "how"
> tu 73 vk3pa