It would change the calibration procedures. It uses very low current so if you want to use 12 volts just put a dropping resistor and a 9volt zener after the dropping resistor.
-----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of [EMAIL PROTECTED] Sent: Wednesday, November 29, 2006 3:09 PM To: [EMAIL PROTECTED]; Paul Del Negro; [email protected] Subject: RE: [Elecraft] OHR WM-1 Here is the link for the 1990 QST project: http://www.arrl.org/tis/info/pdf/9002019.pdf Does anyone know if the WM-1 can take 13.8 volts or do I need a 9 volt voltage regulator. Tom WB2QDG K2 1103 -------------- Original message ---------------------- From: "Don Wilhelm" <[EMAIL PROTECTED]> > Paul, > > The OHR WM1 was based on the QRP Directional Wattmeter by Roy LeWallen, and > although I don't know how OHR may have changed it, I would believe that the > calibration procedure is quite similar. You may want to check the QRP > Directional Wattmeter article originally published in QST Feb 1990 and > appeared in several editions of the ARRL Handbook and Antenna book after > that time. > > 73, > Don W3FPR > > > -----Original Message----- > > > > Does anyone have the alignment instructions for the Oak Hills Research > > WM-1 wattmeter? Now that I have the K2 I want to use mine again. > > Changed the battery and would like to re-calibrate it but can't find the > > instructions. And thanks to all for help with my previous questions. > > Great group! > > 73s > > Paul > > N2PD > > > > > _______________________________________________ > Elecraft mailing list > Post to: [email protected] > You must be a subscriber to post to the list. > Subscriber Info (Addr. Change, sub, unsub etc.): > http://mailman.qth.net/mailman/listinfo/elecraft > > Help: http://mailman.qth.net/subscribers.htm > Elecraft web page: http://www.elecraft.com _______________________________________________ Elecraft mailing list Post to: [email protected] You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com _______________________________________________ Elecraft mailing list Post to: [email protected] You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
