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.

Yes, the slugs can be calibrated. Plate on slug is removed, then the slug
is calibrated. Important thing is to have an accurate standard to calibrate
to. Known 50 ohms with an accurate reading of voltage in the center of the
frequency range is a good start.

Colin K7FM

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.

P.S. IF you are really desperate, either remove
the silver cover, or drill a hole , about dead
center, in the (Power. Letter, as in ,where,say
1000 C, in the rectangular box),Just the aluminium
plate, NOT any deeper!).This about 6 o'clock
position. There is a calibration pot accessable
thru an access hole in the slug, and can be
adjusted- BUT I highly recommend against it! Jim
NN7K

Jim - NN7K wrote:
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.

Thanks guys and girls! Some good ideas. I hope the OP is following too.

L.

"Jim - NN7K" wrote in message
...
P.S. IF you are really desperate, either remove
the silver cover, or drill a hole , about dead
center, in the (Power. Letter, as in ,where,say
1000 C, in the rectangular box),Just the aluminium
plate, NOT any deeper!).This about 6 o'clock position. There is a
calibration pot accessable
thru an access hole in the slug, and can be
adjusted- BUT I highly recommend against it! Jim
NN7K

Jim - NN7K wrote:
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.