[AMPS] abnormallly high plate current

[Michael Tope]

Lane,

Are any of amp components (aside from the tube) running
unusually hot? If not, conservation of energy says that
the missing output power is being dissipated in the tube?

Mike, W4EF 

----------
From: 	Lane Zeitler[SMTP:Ku7i@worldnet.att.net]
Sent: 	Thursday, January 06, 2000 4:46 AM
To: 	measures; Mike Willis; AMPS
Subject: 	Re: [AMPS] abnormallly high plate current


This all started when I went to calibrate the plate current meter. That is
when I discovered that the plate current was actually much higher that I
thought. The dummy load is not an issue since it has the same indications
using the antenna also with a 1.1:1 vswr.

Lane
Ku7i
----- Original Message -----
From: measures <measures@vcnet.com>
To: Mike Willis <Mike@g0mjw.freeserve.co.uk>; AMPS <amps@contesting.com>
Sent: Thursday, January 06, 2000 5:27 AM
Subject: Re: [AMPS] abnormallly high plate current


>
> >
> >What is the bias voltage ? Have you tuned it up properly and are both
meter
> >shunts still the correct resistance ?
> >
> Checking the meter accuracy is a good idea.  So is measuring the R of the
> dummy load.  Wattmeters can not give accurate readings unless the load is
> 50 ohms, as checked with a DMM.  //  Heath cantennas are especially
> vulnerable to damage because they use a resistor that is rated at 50w
> continuous.
>
>
> -  Rich..., 805.386.3734, www.vcnet.com/measures.
>
>
> --
> FAQ on WWW:               http://www.contesting.com/ampsfaq.html
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>
>


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