Re: [Amps] ampliphase and hybrid am mod circuits

["lncarman" <lncarman@swbell.net>]

Thanks Tomm & Skipp. Ampliphase sounds interesting. Lately, I've been 
considering building an AM rig. Now that I'm aware of ampliphase, might be a 
good feature to add. I'll have to check out the PhaseX group on Yahoo .
Regards,
Larry N5BIP

----- Original Message ----- 
From: "Tomm Aldridge" <KD7QAE@ARRL.NET>
Cc: <amps@contesting.com>
Sent: Tuesday, January 25, 2005 10:16 PM
Subject: Re: [Amps] ampliphase and hybrid am mod circuits


> There are a bunch of AMers developing ampliphase transmitters with new 
> solid state phase regulators used in the power supply industry.  We have a 
> small Yahoo group called PhaseX if you care to visit.
>
> nospam4me@juno.com wrote:
> > Hi Larry,
> >
> > Although a bit unconventional, there are a number of schemes used in 
> > hybrid AM Broadcast Transmitters. I put one such animal on the air as 
> > 1640 KXBT (first expanded band AM tx west of NJ) back in the mid 90's 
> > using a converted Continental 10Kw beast. It had good audio and never a 
> > bug in the RF section, just old power supply issues would pop up, nothing 
> > out of the ordinary for a transmitter of that vintage. These units are 
> > now popular for the 160 meter crowd (low power mode setting), if you can 
> > get the 3 phase power to the shack. cheers,
> > skipp nospam4me@juno.com www.radiowrench.com/sonic [paste]
> > Date: Tue, 25 Jan 2005 08:47:52 -0600
> > From: "lncarman" <lncarman@swbell.net>
> > Subject: [amps] old ampliphase broadcast transmitters - 3cx2500F3
> > To: <amps@contesting.com>
> >
> > I thought this might be interesting to anyone into old AM broadcast -> 
> > http://www.rossrevenge.co.uk/tx/koh.htm . It uses ampliphase 
> > (outphasing), which I've never heard of. The site includes the partial 
> > schematic of the 5KW AM transmitter using the 3cx2500F3 and modulation 
> > technique.
> > Have fun,
> > Larry N5BIP
> >
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