That's because you are hitting the alc circuit on mod peaks. You would have to reduce your power output, reduce the audio, or adjust the alc to a higher value.
I notice the effect on some guys running AM on rice boxes, its often quite noticeable on the s meter. That's why most run about 20 watts of carrier or less and go light on the audio. My guess would be that adjusting the alc circuit to a higher value will work good on AM, allowing the tips of the peaks to pass without invoking the alc, but would degrade ssb service since they use the alc as a compressor. Power output goes up, so you have to watch out, but most radios have some extra reserve built in for long rtty or fm transmissions. It just always rubbed me the wrong way to spend $3000.00 for some modern wonderbox and get a massive 20 watts out. Brett N2DTS -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Brian Carling Sent: Wednesday, October 13, 2004 6:34 AM To: Discussion of AM Radio Subject: Re: [AMRadio] B&W 5100B I have the same downward modulation in my Icom 746 and sure wish I could tune to the opposite side of the dip in final current to fix it, hi hi! On 11 Oct 2004 at 0:39, [EMAIL PROTECTED] wrote: > Try tuning to the opposite side of the dip in plate current. > > 73, > > John, W4AWM > ______________________________________________________________ > AMRadio mailing list > Home: http://mailman.qth.net/mailman/listinfo/amradio > Help: http://mailman.qth.net/mmfaq.html > Post: mailto:[email protected] ______________________________________________________________ AMRadio mailing list Home: http://mailman.qth.net/mailman/listinfo/amradio Help: http://mailman.qth.net/mmfaq.html Post: mailto:[email protected]
