[Kenwood] Kenwood Digest, Vol 67, Issue 3

Sat Nov 7 15:14:43 EST 2009

Hi there OM:

Looks like your LSB carrier point is off a bit. That is my opinion. Get a frequency counter and check it per factory specs.
73s........Bob KG4EQL

> From: kenwood-request at mailman.qth.net
> Subject: Kenwood Digest, Vol 67, Issue 3
> To: kenwood at mailman.qth.net
> Date: Tue, 3 Nov 2009 12:00:35 -0500
>> Send Kenwood mailing list submissions to
> kenwood at mailman.qth.net
>> To subscribe or unsubscribe via the World Wide Web, visit
> http://mailman.qth.net/mailman/listinfo/kenwood
> or, via email, send a message with subject or body 'help' to
> kenwood-request at mailman.qth.net
>> You can reach the person managing the list at
> kenwood-owner at mailman.qth.net
>> When replying, please edit your Subject line so it is more specific
> than "Re: Contents of Kenwood digest..."
>>> Today's Topics:
>> 1. TS-940 Audio Problem (Dennis Klipa)
>>> ----------------------------------------------------------------------
>> Message: 1
> Date: Mon, 2 Nov 2009 19:34:28 -0500
> From: Dennis Klipa <klipadk at gmail.com>
> Subject: [Kenwood] TS-940 Audio Problem
> To: kenwood at mailman.qth.net
> Message-ID:
> <e267a3510911021634q70032240p2ef7d80f19851dd at mail.gmail.com>
> Content-Type: text/plain; charset=ISO-8859-1
>> When my friend, John, transmits on LSB on his TS-940 with his MC-60
> microphone, it sounds like all of the bass has been stripped from his voice,
> as if there were a narrow band filter in the mic circuit. This is true on
> all bands. We have taken his microphone and put in on my TS-940 and it
> sounds great, according to on air reports. It is a little more sensitive
> that my MC-60 but we only have to turn down the mic gain one notch to keep
> the ALC within range with his mic on my 940. It doesn't matter which
> impedance you select on the mic or whether the preamp in the mic base is on
> or off, the audio still sounds bad. The speech processor is turn
> off. Turning it on only makes matters worse. So it is not the microphone.
>> When we turn down the Power down on his rig to about 5 watts out, the
> audio quality increases but only slightly.
>> We have tried LSB, USB, AM and FM modes. The problem is only present on
> LSB.
>> The obvious adjustments to check are:
> 1. SSB Mode Frequency Response
> 2. Supply Voltages
> 3. Carrier Suppression (balanced)
>> But before I open the cover, I wanted to find out if anyone had experienced
> this problem before or has any suggestions on what to look for.
>> Thanks, es 73,
> Dennis, N8ERF
>>> ------------------------------
>> ______________________________________________________________
> Kenwood mailing list
> Home: http://mailman.qth.net/mailman/listinfo/kenwood
> Help: http://mailman.qth.net/mmfaq.html
> Post: mailto:Kenwood at mailman.qth.net
>>> End of Kenwood Digest, Vol 67, Issue 3
> **************************************

_________________________________________________________________
Find the right PC with Windows 7 and Windows Live. 
http://www.microsoft.com/Windows/pc-scout/laptop-set-criteria.aspx?cbid=wl&filt=200,2400,10,19,1,3,1,7,50,650,2,12,0,1000&cat=1,2,3,4,5,6&brands=5,6,7,8,9,10,11,12,13,14,15,16&addf=4,5,9&ocid=PID24727::T:WLMTAGL:ON:WL:en-US:WWL_WIN_evergreen2:112009