|[AMRadio] Monitoring Modulation Accurately|
w5jo at brightok.net
Sat Nov 16 12:57:33 EST 2013
If you are going to buy the venerable Bird with slugs to work from 50 watts
up to 5 KW and the peak reading option then consider another meter.
Take a look at the Telepostinc with his LP 100A. It is guaranteed to 5% but
does better and the calibration is traceable to NBS. Both are in the $4-500
range and you don't have to change slugs for different power ranges.
I have an LP 100 and compared it to a Bird 4411 some years back. The slug
for the Bird was a new one from Bird and I found the linearity of the Bird
suffered some by comparison. With the 4411 it is a peak meter but to get
the true peak, you have to do some math. I won't go back to the Bird unless
I need something to carry up a tower and those days are past for me.
Here is some reading material about the LP 100A. No connection to Larry,
just a satisfied customer. By the way, he is a ham, N8LP.
----- Original Message -----
> Donald Chester pointed it out pretty well hitting it on the head.
> Our Peak Reading Bird watt meters aren't going to be all that accurate.
> Whom has taken and sent theirs back to Bird for calibration?
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