[AMRadio] Monitoring Modulation Accurately

rbethman rbethman at comcast.net
Sat Nov 16 13:33:53 EST 2013


When I got the Peak Reading Bird,  it was still in calibration.  I 
picked up a 2KW slug since it had come with a mess of VHF and UHF slugs 
and nothing in the HF range.

I do know that the 400W carrier shown on the ME-165 and the bird agree 

I'm not about to go and buy another meter at this stage in the hobby.

I'll stick with the Bird and go my merry way.  I really don't believe 
I'll have an issue so long as I don't over modulate and cause a big 
squawk.  The only squawk ever came from one person with a cordless 
phone.  Showed and explained FCC Part 15, and that was the end of that.

I keep it well rained in when I run it.

Bob - N0DGN

On 11/16/2013 12:57 PM, Jim Wilhite wrote:
> 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.
> http://www.telepostinc.com/lp100.html
> Jim
> W5JO

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