[Elecraft] Trouble with Alignment and Test, Part II

Mike mikekopacki at verizon.net
Sun Jan 2 10:18:54 EST 2005


I ran into a little snag here and if anyone could help, I'd appreciate it.

I have ser# 4619, just started the Alignment and Test, Part II.  I 

In the VCO Alignment steps, I obtained the following results (Table 6-1. VCO Voltage Readings):

Band    Low Freq.    Voltage    High Freq.    Voltage
80m      3500              2.0            4000          6.0
40m      7000                .03          7300            .03
30m    10000                .03         10150            .03
20m    14000              2.3           15000          3.89
17m    18000              2.99         18200          3.18
15m    21000                .03         21450            .03
12m    24800              3.84         25000          4.21
10m    28000              3.16         28800          3.97

As you can see, the readings for 40m, 30m and 15m were not within range (1.5v - 7.5v).  I checked all components (L30, D21-D26, and C71-C74 and the correct values were installed).  T5 has the correct number of turns.  I tried adjusting L30, per the instructions to move all the readings upwards, but adjusting L30 had no effect on the voltage reading for the affected bands.

Just to repeat that, I adjusted L30 while watching the voltage readings, and it did not change the readings on the 3 affected bands.  It did change the readings on all the other bands.       

If anyone can help, many thanks!

Mike, NJ2OM
               


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