[1000mp] FT1000MP Key Clicks on first element DO Matter

Mon, 30 Dec 2002 07:43:46 -0500

I think I've stated this before but I guess I wasn't clear about it.  The 
recording is when I tuned up 800hz to W8FJ's fundamental so you can hear his 
actual transmitted signal along with the pop/click.  When listening on my 
frequency, 800hz below him, all you hear is that pop/click of the first 
element and his fundamental is completely outside of the 500hz filter 
passband.  I think this is causing confusion when folks listen to the 
recording.  It is NOT an AGC problem, and his fundamental received signal 
was not overly strong.

However, W8FJ was wondering if there is a problem with his amp switching 
which might be causing the first element pop/click, rather than his MP's 
keying waveform so yes, that is a possibility.

73,
Barry N1EU

>From: lhlousek <[email protected]>
>Reply-To: [email protected]
>To: [email protected]
>Subject: [1000mp] FT1000MP Key Clicks on first element DO Matter
>Date: Sun, 29 Dec 2002 19:27:46 -0800
>
>Barry,
>
>What you recorded sounds like some other problem than the usual key click 
>problem.  I've heard many MPs on the air and
>none ever sounded like that.  It sounds more like an AGC problem in the RX 
>or a ALC problem in the TX, or maybe in the
>amp if he was using one.  The normal keyclick problem due to fast rise and 
>fill times causes excessive bandwidth, not
>popping,  and really isn't heard when listening to the signal.  It is heard 
>more plainly when tuned above or below the
>signal far enough that it is outside of the bandpass of the selected 
>filter.
>
>Lou W7DZN
>
>

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