Re: NC40A revision B power measurements

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From: Adam O'Donnell (adam@philadelphia.libertynet.org)
Date: Thu May 25 1995 - 16:47:56 EDT


> Typical numbers for the NorCal 40A running at 14 volts are:
>
> - 2 watts out with drive set to about 80% clockwise,
> PA collector current 185mA, PA efficiency approx. 77%,
> Total transceiver current on transmit: 221mA
>
> - 3 watts out with drive set to max clockwise
> PA collector current 285mA, PA efficiency approx. 75%,
> Total transceiver current on transmit: 323mA
>

If what you say is true...

The total effeciency (power out / power in) for:

        1 - 2w/(14v * .221A) = 64.6%
        2 - 3w/(14v * .323A) = 66.3%

The rig is more effecient with the drive set to max. I don't know how the
parts would feel about that...

73

-- 
Adam O'Donnell, N3RCS
Internet:  adam@libertynet.org

My parents tell me that I just take up time and space. It's true - I'm into relativity theory.

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