[Elecraft] Power Measurement Instrument

Fri Nov 8 22:22:00 2002

Hi

I have one of these also as well as the OHR WM-2 and a Autek WM-1 computing
wattmeter. The Autek has two meters that read SWR and forward power
simultaneously much like the KAT100.  I use the TenTec mostly on VHF. It
works very well but the WM-2 has a little nicer meter. Either one will make
a nice addition to your shack.

The Autek has 3 ranges 20,200 and 2000 watts and it will measure average or
peak watts. It has a remote mounted SWR/power pickup and nice lighted analog
meters. It does not come in kit form though.

I posted a modification to the OHR Dummy load a while back to make the WM-2
read 100 watts on the 1 watt scale by converting the load into a 20 db power
attenuator.

The most accurate "meter" I have is a TenTec 300 watt dummy load with a
precision 40 db attenuator circuit built in and measured on a Textronix 2465
scope. This is what I calibrate the other meters against.

Don Brown
KD5NDB

----- Original Message -----
From: "Stuart Rohre" <[email protected]>
To: <[email protected]>; <[email protected]>
Sent: Thursday, November 07, 2002 5:59 PM
Subject: Re: [Elecraft] Power Measurement Instrument

> And another best buy in RF power and SWR meter kits, is the Ten Tec HF and
> VHF one.  It sells for $59, and covers 2m, and HF with two pickups.
> Accuracy seems as good as the Bird I had to compare it with.
>
> It has battery power, or can operate off wall wart DC supply.  Ranges come
> with instruction for setting 20 watt full scale or 200 watts, but cal pot
> allows resetting either scale to 2 watts full scale.  The VHF pick up also
> seems to work fine at 440 UHF band.  Accuracy on 2 watt scale was linear
> down to 1/2 watt or better.
> It is a well documented kit, a snap for a K2 builder!
> 72,
> Stuart K5KVH
>
>
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