I have a 2,500 watt, HF slug that I don't have confidence in. Anyone
know who calibrates slugs for a reasonable fee?

Thanks.
Jeff
W8KZW

wrote in message
oups.com...
I have a 2,500 watt, HF slug that I don't have confidence in. Anyone
know who calibrates slugs for a reasonable fee?

Thanks.
Jeff
W8KZW

Have you contacted Bird? Last I heard, they were still making equipment. As
to "reasonable" - thats a good question. But then at least you would know it
is "accurate".

L.

L. wrote:
wrote in message
oups.com...
I have a 2,500 watt, HF slug that I don't have confidence in. Anyone
know who calibrates slugs for a reasonable fee?

Thanks.
Jeff
W8KZW

Have you contacted Bird? Last I heard, they were still making equipment. As
to "reasonable" - thats a good question. But then at least you would know it
is "accurate".

L.


Yes, Bird is still in business and, no (IMHO), they are not reasonable...

"Carter-k8vt" wrote in message
. ..
L. wrote:
wrote in message
oups.com...
I have a 2,500 watt, HF slug that I don't have confidence in. Anyone
know who calibrates slugs for a reasonable fee?

Thanks.
Jeff
W8KZW

Have you contacted Bird? Last I heard, they were still making equipment.
As to "reasonable" - thats a good question. But then at least you would
know it is "accurate".

L.
Yes, Bird is still in business and, no (IMHO), they are not reasonable...

As you seen, I questioned "reasonable". I guess a good question may be - ARE
they the only game in town to do such calibrations? There are a few places
who do "Service Monitor" calibrations and such. I wonder if "they"
would/could do them?

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.

L.

Ok guys here is what you need to cal a Bird

Youb need a
Fluke Model 5100B Calibrator, About $2,695.00 on ebay
you will also need a D-c input 4381-050 Element about $275-$300 new
That goes in place of the element on the Bird meter ( has a BNC on it)


10 milli amps--------10 watts
20 milli amps---------middle scale
30 milli amps----------full scaleand thats how you cal a bird watt
meter



Karl N2RLD

On Wed, 13 Sep 2006 19:03:31 -0400, "L." wrote:

"Carter-k8vt" wrote in message
...
L. wrote:
wrote in message
oups.com...
I have a 2,500 watt, HF slug that I don't have confidence in. Anyone
know who calibrates slugs for a reasonable fee?

Thanks.
Jeff
W8KZW

Have you contacted Bird? Last I heard, they were still making equipment.
As to "reasonable" - thats a good question. But then at least you would
know it is "accurate".

L.
Yes, Bird is still in business and, no (IMHO), they are not reasonable...

As you seen, I questioned "reasonable". I guess a good question may be - ARE
they the only game in town to do such calibrations? There are a few places
who do "Service Monitor" calibrations and such. I wonder if "they"
would/could do them?

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.

L.

OK - lets see here. First of all, thanks for the "Bird Wattmeter"
calibration info. I appreciate it as I'm sure others may as well. However,
the question was of calibrating a(n) "element/slug". So, can you enlighten
us on that aspect - or is it that they're either go /no go - and it is the
"meter" which is all that is calibrated?

L.

"Karl" wrote in message
...
Ok guys here is what you need to cal a Bird

Youb need a
Fluke Model 5100B Calibrator, About $2,695.00 on ebay
you will also need a D-c input 4381-050 Element about $275-$300 new
That goes in place of the element on the Bird meter ( has a BNC on it)


10 milli amps--------10 watts
20 milli amps---------middle scale
30 milli amps----------full scaleand thats how you cal a bird watt
meter



Karl N2RLD

On Wed, 13 Sep 2006 19:03:31 -0400, "L." wrote:

"Carter-k8vt" wrote in message
t...
L. wrote:
wrote in message
oups.com...
I have a 2,500 watt, HF slug that I don't have confidence in. Anyone
know who calibrates slugs for a reasonable fee?

Thanks.
Jeff
W8KZW

Have you contacted Bird? Last I heard, they were still making
equipment.
As to "reasonable" - thats a good question. But then at least you would
know it is "accurate".

L.
Yes, Bird is still in business and, no (IMHO), they are not
reasonable...

As you seen, I questioned "reasonable". I guess a good question may be -
ARE
they the only game in town to do such calibrations? There are a few places
who do "Service Monitor" calibrations and such. I wonder if "they"
would/could do them?

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.

L.

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

"Ed" wrote in message
. 192.196...


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

Damned, I'll have to see if my friend still gets QST. I don't. Thanks!

L.

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

Heck best thing can do, is find someone else with
a wattmeter, and then compare the measurement, vs.
your slug/wattmeter. If within +- 5 % don't
worry! You wouldn't even hear the diff at 10 %!,
but if memory serves, these are susposed to be
accurate to 5%.. Jim NN7K


L. wrote:
wrote in message
oups.com...
I have a 2,500 watt, HF slug that I don't have confidence in. Anyone
know who calibrates slugs for a reasonable fee?

Thanks.
Jeff
W8KZW

Have you contacted Bird? Last I heard, they were still making equipment. As
to "reasonable" - thats a good question. But then at least you would know it
is "accurate".

L.