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Re: Strange behaviour in K2

Posted by Geoffrey Mackenzie-Kennedy on Jan 20, 2008; 7:54pm
URL: http://elecraft.85.s1.nabble.com/Strange-behaviour-in-K2-tp459483p459487.html

Hi Hans,

One possible reason why the problem does not show up on all K2s, assuming that they are all exposed to the same strong signals, is that all K2s are not exactly the same in terms of actual component values due to allowed tolerances, which in turn can result in a different behaviour of  unwanted 'sneak paths'. There are several other possible reasons which include mechanical construction, but to keep this short I'll not go deeper now :-)  A related subject is 'Birdies'.

73,
Geoff
GM4ESD


Hans LA2MOA wrote:

>Thanks a lot for your response! Yes, our problems seems to be similar, indeed! Yesterday evening, there was a lot of kicking, popping and "whoooing" in my K2, due to all very strong contest-CW >signals on 40. Very strange, indeed. This is my second K2, and I didn't experience something even similar to this in my previous one.

>I did send a copy of the description of my problem to the support guys on Elecraft, so let's see what they come up with. However, your explanation of the problem seems fair enough - but it's still strange >that this doesn't occour on all K2:s...

>Well, think that the best I can do for now is to complete the rig, by assembling part III, do all the finishing work and see if this also occours on other bands.

>Thanks and 73!

>Hans / LA2MOA
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