KAM.18


From: EA5SP@EA5FDS.EAV.ESP.EU

Hello my name is Juan, this text talk about the mods for transceivers
of Ham Radio... I hope you interest this... If you need mods for others
tranceivers, ask me....
BE CAREFUL!  Procede at your own risk.
Dont forget that transmitting outside the amateur band is not
allowed so please consult your local athorities for a special permit.

THANKS   EA5SP.EA5FDS.EAV.ESP.EU.WW

I noticed that the KAM, when connected or trying to connect, will start
to transmit on top of an other signal at times. This will happen when a
received signal appears just before the the KAM wants to transmit.
It is visible by looking at the mark/space display. After a quiet period
a received signal will light up the bargraph display and the KAM will
transmit on top of it.

Looking at the circuit diagram, I noticed a 1 uF capacitor (c 29) in the
carrier detect circuit. It seems to slow down the detect function more
than desired. Changing the capacitor to .1 uF made the carrier detect
work more the way I expect it to. It is easy to gete any side effects.
I also didn't try it in any of the other modes.


73's From EA5SP Op: Juan......

EA5SP.EA5FDS.EAV.ESP.EU.WW