Eric Ward wrote:

....I have been interested in building some version of a visual zero
beat detector that uses a PLL tone-decoder IC for use with the KX1.  I have
read about the K2 guys using N0SS's PC board version of the circuit designed
by KR5L.  Has anyone tried it (or the Jackson Harbor Press kit, or any such
similar) with the KX1?  Is the side tone too fuzzy/harmonically rich to make
it work?

Then ... At 10:51 AM 12/1/04, wayne burdick wrote:

Tom Hammond has put the tone detector in a KX1, I believe. But I think he's off-line for a few days, since he's visiting here in California.

Hi folks:

Just returned home... whew! Great time out on The Left Coast, but ready to be back here as well...

Regarding the CW Tuning Indicator installed in a KX1... I think Wayne nearly passed out when I told him we'd managed to get the device installed and moreover, installed using the MAP LIGHT as the indicator, so that no holes had to be drilled... and nothing was hanging out either!!!

Kudos to Pete Ames, NU6Q, who actually performed the installation on his KX1 (I no longer have the KX1 I built, it want to Wayne as a 'bench rig'). Pete followed my instructions and it appears the install went without significant screaming gnashing of teeth!!! We did have a couple false starts, but things came together nicely in the end.

First off... for anyone who thinks about installing the CW Tuning Indicator into their KX1, drop me a note for my (so far UNpublished) notes on the installation AND for some pics from Pete of his completed install.

The connections to the KX1 for DC, GND, and LED are very straightforward. However, the AF input to the Tuning Indicator is not taken from the input to the AF amp is done for the K2 and K1.. too much digital noise... but it is taken from the OUTPUT of the AF Amp via a 50:1 voltage divider (47k and 1k) to ensure that we didn't overdrive the PLL.

I'm working on a set of KX1 installation docs which will be INCLUDED in the general assembly and alignment docs for the CW Tuning Indicator. I'm also working on installation docs for the K1, but we still need to hammer out the best way of installing the LED itself WITHOUT having to drill a hole... one option will be to illuminate (with a contrasting color) one edge (or possibly a corner) of the LCD display. But this remains to be solidified a bit more. I do have connection data available as well for the asking.

73,

Tom Hammond    N0SS

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