Jeremy,
That 5 volts at U4 pin 13 is higher than normal, and is the reason you
do not have any control over the frequency of the VFO.
Make certain the path from the VFO output through C62 to U4 pin 4 is
intact with good soldering all the way. Check the value of C62 (0.01
uF marked 103). Make certain pins 5, 6 and 7 of U4 are properly
soldered. Do the DC voltage checks on U4 and let me know the results.
73,
Don W3FPR
On 2/2/2013 6:42 PM, JeremyJones wrote:
U4 pin13 = 5.029V
U6 pin6 = 5.026V
U6 pin7 = 0.020V
L30 with 1 red lead removed = 0.5ohm
--
View this message in context:
http://elecraft.365791.n2.nabble.com/K2-VCO-Alignment-only-0-02V-R30-tp7569523p7569545.html
Sent from the Elecraft mailing list archive at Nabble.com.
______________________________________________________________
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:[email protected]
This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
______________________________________________________________
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:[email protected]
This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
