[Elecraft] Incorrect Voltmeter Reading

Fri Mar 5 17:46:01 2004

Hi

All of the Elecraft radios (K2, K1, KX1) have a reverse voltage blocking =
diode in series with the power supply. The internal voltmeter connects =
after this diode so the meter will always be about .3 to .4 volts lower =
than the actual supply voltage. This series diode along with the self =
resetting fuse and a shunt diode protects the radio if it were =
accidentally connected to a reversed polarity supply. Just remember to =
add .3 volts to whatever the internal voltmeter reads for the battery =
voltage.=20

Don Brown
KD5NDB
  ----- Original Message -----=20
  From: Sandy W5TVW<mailto:[email protected]>=20
  To: [email protected]<mailto:[email protected]> ; Fred =
Bongard<mailto:[email protected]>=20
  Sent: Friday, March 05, 2004 4:03 PM
  Subject: Re: [Elecraft] Incorrect Voltmeter Reading

  I have a similar problem with my 4 band K1.  The K1 battery voltmeter =
reads
  say 12.0 volts when the actual voltage is 12.3-12.35 volts.  I was =
thinking
  my battery supply was about to give out when indeed it wasn't.  I have
  since made a note on my "quick reference" guide I carry around with
  the transceiver and mentally add 0.3 volt to the reading that appears
  on the LCD panel.
  Anbody else notice this with their K1?
  73,
  Sandy W5TVW
  K1 #1178

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