[Elecraft] Accurate QRP Wattmeters?
Tom McCulloch
thom2 at att.net
Sun Jul 3 21:54:51 EDT 2005
Chuck and all.
Can you tell me if you need to use an RF probe along with the DL-1, or is
the circuitry built into the DL-1 and you can just use the DMM probes?
Thanks.
Tom
WB2QDG
----- Original Message -----
From: "Chuck Gehring" <gehringc at charter.net>
To: "J. Coote" <TSCM at jps.net>; <elecraft at mailman.qth.net>
Sent: Sunday, July 03, 2005 5:10 PM
Subject: RE: [Elecraft] Accurate QRP Wattmeters?
> The Elecraft Mini-Module DL1 Dummy Load has test points that allow you to
> use a DMM to measure out put. I can't imagine anything in that price
> range
> being more accurate
> 73, KI4DGH
> Chuck Gehring
>
> -----Original Message-----
> From: elecraft-bounces at mailman.qth.net
> [mailto:elecraft-bounces at mailman.qth.net]On Behalf Of J. Coote
> Sent: Sunday, July 03, 2005 12:46 PM
> To: elecraft at mailman.qth.net
> Subject: [Elecraft] Accurate QRP Wattmeters?
>
>
> Hello List,
> I've posted my question on QRP-L and here as well- since I will be
> building
> a KX-1.
> I am looking for good ways to measure power output from my KX-1 while I am
> building it.
> What first came to mind was to set up my Tek 492 analyzer on a 2 dB scale
> and then use
> a 30 or 40 watt (high power) attenuator to measure CW power. I have
> several
> Bird 43's
> but have never seen Bird slugs for QRP LF, MF or HF. I think a competing
> company may
> have a through wattmeter with HF but I forget the lowest scale of that
> one.
> I have read
> the E-Ham reviews for the Oak Hills QRP wattmeter- 300 Khz to 54 MHz and
> 100mW, 1W and 10W
> scales- still thinking over the reviews.
>
> Comments on the accuracy of using the Tek 492 method, and on other
> accurate
> wattmeter options?
>
> 73
> Jay
> W6CJ
> AAR9QM
>
>
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