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dalamphere(at)comcast.net
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 Posted: Wed Jul 29, 2009 5:23 am Post subject: No Sidetone |
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I have an interesting problem with my newly installed King KX125.
While everything seems to be working correctly and I am clearly received
when I transmit, there is no sidetone during transmission (I do not hear
myself in the head set). I have eliminated the intercom completely, using an
older handheld mike and phones only - same symptoms - rx clear, tx clear, no
sidetone. Could it be that I have not installed some jumper not shown?? Or
is there a pot somewhere I need to tweek?
I have attached the section of the schematic that pertains to this.
I do not have any connections to pin 501-16 nor do I have a switch on the
mike jack as shown.
The applicable notes refer to switching 100-H to 501-16 and opening up 100-8
to prevent your audio from being transmitted.
Any clues or hints as to what I have missed doing??
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dalamphere(at)comcast.net
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| Posted: Fri Jul 31, 2009 7:10 am Post subject: No Sidetone |
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Just a follow-up..
The problem turned out to be the sidetone adjustment pot was turned all the
way down by some previous owner (or the factory). This is accessable through
a hole labeled "sidetone" in the radio case (covered by a small aluminum
tape dot). Being careful to ground myself before touching, I turned it to
halfway. Upon re-insttalling and trying it out, I could hear myself clearly
when transmitting.
While there were no repsonses about this post, I think someone else might
benefit from what I found.
Dave L.
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