[Elecraft] Alignment And Such

Wed Sep 3 08:41:01 2003

Thanks all for the helpful suggestions. I scrunched the turns on T5 
together a little bit and that did bring the voltage up well high enough at 
R30 to get the 6.0v required. However the turns are now clearly not 
covering 80% of the core and I am not sure if this is a good idea or a bad 
idea. So I am pondering adding one more turn to it instead.

I have another problem that may or may not be associated with the 
adjustment to T5.

I continued on to the next step which had me measure the voltage at the 
left side of R30 (same place) while turning the VFO knob to various 
frequencies. I did this and almost all of the values where 8.147 or in that 
area. then I noticed that I didn't hear the relays clicking as I turned the 
VFO knob, then I noticed that they didn't change over unless I used the 
band buttons to change for instance up to the 40m band to get to the 7000 
and 7300 range. So I repeated the test using the band buttons to make the 
bulk of the movement then the VFO Knob to zero in on the frequency. Doing 
it this way the relays did switch over and the Voltage measurements where 
DIFFERENT! Ok so what dose this mean?

My first question is, should I just turn the VFO knob to get to the 
frequencies or should I use the band buttons. (causing the relays to click 
over.) If the former then what band should I have the radio set at to begin 
with. Should I set the radio to the 40m band using the band change buttons 
then tune down (using the VFO knob) to 3500 and start testing the values 
from there? or should I move to the 80m band (using the band buttons) then 
using the VFO knob tune across the frequencies and test them.

My second question is; Is this normal operation at this stage of the build? 
Or have I goofed something else up?

My final question (for today) is; could the high voltages measured during 
this test be a side effect from scrunching the turns on T5 together tighter 
to get the voltage higher at the left side of R30? if so should I use a 
different method? all capacitors and the slug tuned shielded inductor 
(suggested problems in the manual) are verified to be the correct values (I 
didn't measure them I just made sure that the label was the one it was 
supposed to be).

thanks to all for your help.

Dwayne

At 10:52 PM 9/1/2003, Dwayne Walker wrote:
>Ok,
>I am on page 58 at the fourth step. I can not get the voltage up to 6V. I 
>got it up to 5.3 then backed it off and turned it up again and this time 
>only got 5.1 so I think I may have damaged L30 by turning it to far. Is 
>there a way to know what the end of the range is without finding it 
>manually? At any rate, I checked the value of C72 and L30 and both are 
>correct. So I figure that I wound T5 wrong. but it looks correct to me. I 
>could not find any solder bridges or un soldered joint's or any thing else 
>of a 'doe' factor. So dose any one have a suggestion where I should start 
>looking?
>
>Thanks Dwayne
>
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