From: "DAN COTSIRILOS" 
Subject: Fw: [drakelist] T-4XB AM question



----- Original Message -----
From: "Graf Ulrich ICM MP PD ST 1 ULM 2" 
To: "'DAN COTSIRILOS'" 
Sent: Tuesday, November 04, 2003 5:10 AM
Subject: RE: [drakelist] T-4XB AM question


> The relationship of frequencies indicates a carrier modulated with a
signal of about 18 ... 20 kHz. The amplitude relationship with sidebands
half as strong as the carrier means 100% modulation. Really no modulation?
Or just no speech but a lot of background noise and wide open mic gain?
>
> Uli, DK4SX
>
> -----Original Message-----
> From: owner-drakelist{at}www.zerobeat.net
> [mailto:owner-drakelist{at}www.zerobeat.net]On Behalf Of DAN COTSIRILOS
> Sent: Dienstag, 4. November 2003 15:36
> To: John_K7FD; drakelist{at}zerobeat.net
> Subject: Re: [drakelist] T-4XB AM question
>
>
>
> My understanding is that the 4 line never put out a pure AM signal!  Dan
>
>
>
> ----- Original Message -----
> From: "John_K7FD" 
> To: 
> Sent: Monday, November 03, 2003 8:57 PM
> Subject: [drakelist] T-4XB AM question
>
>
> >
> > Hello,
> >
> > When I keyed my T-4XB (no modulation) on AM at 3.871 MHz, I took a
'look'
> at
> > the signal on my IC-756ProII band scope. What I saw has me a bit
> concerned:
> > I see my signal has two smaller carriers on each side -- one at 3.851
MHz
> > and one at 3.889 MHz. It appears the relative amplitude of the side
> signals
> > are about half the strength of the carrier on the intended transmit
> > frequency...
> >
> > ...has anyone come across this before?
> >
> > Thanks,
> >
> > John K7FD
> >
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