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Re: [TowerTalk] LP-100 digital wattmeter with complex impedancedisplay

To: Jim Lux <>
Subject: Re: [TowerTalk] LP-100 digital wattmeter with complex impedancedisplay
From: Larry Phipps <>
Date: Mon, 20 Mar 2006 15:26:03 -0500
List-post: <>
Hi Jim. It's the version published in QEX except for the added circuitry 
and firmware to handle the phase detection and complex impedance calcs.  
It also uses a newer, faster PIC, and has the 
powder-coated/silk-screened enclosure mentioned in the article.

Larry N8LP

Jim Lux wrote:
> At 10:10 AM 3/20/2006, Larry Phipps wrote:
>> My LP-100 wattmeter, as featured on the cover of the Jan/Feb QEX, and
>> shown at Dayton 2005 at the SteppIR booth, is now ready for sale. The
>> LP-100 has excellent accuracy over a wide dynamic range (50 mW to 2500W)
>> for both power and SWR. It has a unique combination of features too
>> numerous to list here, including a nifty new complex impedance display.
>> This screen adds Z, R and X display from 0-999.9 ohms to the long list
>> of features.
> Cool deal..
> I'd like to know a bit more about the R & X measurement capability...
> Is the LP100 the version with the stripline coupler and the detectors 
> at the probe or the version with the dual transformer coupler and RF 
> going back to the box?
> Jim, W6RMK

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