[Elecraft] Voltage drop in DC Power to K3

Dave Cole dave at nk7z.net
Sun Apr 26 13:43:03 EDT 2020


Voltage drop the easy way:

1.  Press the DISP button on the K3.
2.  Adjust VFO B for voltage.
3.  Go into transmit at full power.
4.  Write down the voltage you see.
5.  Meter the power supply.
6.  Go into full power transmit.
7.  Write down the Power Supply voltage.

Subtract the number you got in step 4, form teh number you got in step 
7.  You have now calculated the total voltage drop across your 12 V 
power system.

If you want to know the individual item drops, replace an item with a 
jumper, goto step 1.

According to WMR, each mating surface adds .0006 ohm on a 35 Amp PP 
connector.

73, and thanks,
Dave (NK7Z)
https://www.nk7z.net
ARRL Volunteer Examiner
ARRL Technical Specialist
ARRL Asst. Director, NW Division, Technical Resources


More information about the Elecraft mailing list