Re: KX1 Receiver Alignment
Posted by
EMD on
Apr 10, 2009; 11:15pm
URL: http://elecraft.85.s1.nabble.com/KX1-Receiver-Alignment-tp2618208p2618823.html
Hi Don,
I think I may have found the problem. When I installed X1 I attached a ground to the top of the crystal. I used the same technique when I installed X2 through 5. After rereading the installation portion of the manual I read that the ground should be attached no more than 3/16" from the bottom of the crystal. Do you think this is the problem?
Thanks
Ed
On Apr 10, 2009, at 5:17 PM, Don Wilhelm-4 (via Nabble) wrote:
Ed,
The trimmers are normal one turn trimmer capacitors. I any one full
rotation, you should find 2 places where the signal peaks.
The order of things is important - peak 20 meters first - if you cannot
find a peak on 20 meters, you have something wrong and will have to look
for the problem source (most likely is a bad solder connection).
After peaking both trimmers for 20 meters, switch to 40 and peak that
band's trimmer.
If you have found a peak on both bands, all should be OK.
I would initially run with the Bandwidth control at 1/3 to 1/2 clockwise
rotation rather than full CCW. The RF Gain at full CW and the AF gain
sufficiently advanced to hear something.
EMD wrote: > All,
>
> I have completed Phase II of construction and have a couple of questions. But first, I have the RF Gain set to full clockwise, Filter full CCW and AF Gain at about the 12 O'clock position. I have a 28' piece wireman 541 wire connected to the red side and a 16' piece of the same wire to the black side of a double BNC antenna connection. I'm using a SONY MDR NC60 Noise canceling headset. All the tests are good except I am not able to peak the trimming capacitors. I do hear some static in the back ground but I don't think I'm doing it right since I cannot find Peak. Do the trimmers have a max number of turns in one direction before the reach a stop or will they just keep turning? Can they be broken by over turning in one direction?
>
> I need some help understanding this process.
>
> Thanks and 73
>
> Ed KE7HGA
>
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