Differences
This shows you the differences between two versions of the page.
Both sides previous revision Previous revision Next revision | Previous revision | ||
564_40m [2015/08/28 12:13] n1eu |
564_40m [2015/08/28 13:31] n1eu |
||
---|---|---|---|
Line 12: | Line 12: | ||
And the list goes on and on where missing bands have been concerned. Each | And the list goes on and on where missing bands have been concerned. Each | ||
of these problems was a PIN Diode. In your case it is D12 on the OSC-Low | of these problems was a PIN Diode. In your case it is D12 on the OSC-Low | ||
- | Mixer Board. If you look at page 6-14 of the Manual or page 52 of 132 of | + | Mixer Board. If you look at page 6-14 of the Manual, or page 52 of 132 of |
- | the .PDF on your computer. You will see Connector 82. ( osc-low mixer board | + | the .PDF on your computer, you will see Connector 82 ( osc-low mixer board). The band switching is done by applying a positive voltage to the proper |
- | ) The band switching is done by applying a positive voltage to the proper | + | |
diode to activate the proper crystal.\\ | diode to activate the proper crystal.\\ | ||
\\ | \\ | ||
Line 24: | Line 23: | ||
on one end. And then 80 will be the second one over and 40 the third pin | on one end. And then 80 will be the second one over and 40 the third pin | ||
in. So when you switch to 40 meters just make sure that the switching | in. So when you switch to 40 meters just make sure that the switching | ||
- | voltage is there and stable. If that voltage is there, Don't Check | + | voltage is there and stable. If that voltage is there, don't check |
... REPLACE ... D12. D12 is the PIN switching diode for the 40 meter | ... REPLACE ... D12. D12 is the PIN switching diode for the 40 meter | ||
crystal. These switching diodes have been a very common problem/repair for | crystal. These switching diodes have been a very common problem/repair for |