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Re: LF: Re: RF Thermo Couple Meter, calibration?

To: [email protected]
Subject: Re: LF: Re: RF Thermo Couple Meter, calibration?
From: "M. Bruno" <[email protected]>
Date: Sat, 6 May 2000 19:58:22 +0200
Data: Sat, 06 May 2000 18:58:52 +0100
In-reply-to: <[email protected]>
Reply-to: [email protected]
Sender: <[email protected]>
I always believed that you could calibrate true bolometric RF ammeters using
DC? I've checked a couple of thermocouple RF ammeters and it seems to work.
Martin Evans
You can, if you calibrate in DC reversing the current flow and averaging the
readings. Many thermocouple ammeters exibit asymmetries, probably due
to other thermocouple effects in the joints, that are nulled in AC.

73, Marco IK1ODO



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