My Hercules 444 caught fire (oscillation), burning up a board or two.
Ten-Tec reluctantly fixed it -- I think they may have had to fabricate new
boards. Then they said NO MORE Hercules 444 repairs. This was because the
power devices were no longer available and substitutes had too high gain and
would oscillate, burning up a board or two.
Therefore, be advised that if you do not already own a Hercules 444 you
might want to think twice before acquiring one.
Steve is right about the fan. It is thermostatically controlled and sounds
like a 707 jet when running slow and a 747 in full throttle reverse when
warm.
73, Mike N4NT
----- Original Message -----
From: "Steve N4LQ" <n4lq@iglou.com>
To: <tentec@contesting.com>
Sent: Saturday, July 03, 2004 4:58 PM
Subject: Re: [TenTec] Re: Hercules versus Hercules II
> The old one may have been a bit more efficient since less DC current was
> required resulting in less power loss in conductors etc. Personally, I
> thought the old herc was better looking than the Herc II but otherwise it
> had no advantages. Changing bands made a sound like a machine gun and as I
> mentioned, the fan was really LOUD.
> Steve N4LQ
> ----- Original Message -----
> From: "Ken Brown" <ken.d.brown@verizon.net>
> To: <tentec@contesting.com>
> Sent: Saturday, July 03, 2004 4:40 PM
> Subject: [TenTec] Re: Hercules versus Hercules II
>
>
> > I guess I should have changed the subject line..... I wonder if the
> > original Herc running on 48 V has better IMD, more output, or anything
> > else good about it to offset the fact that you can't run it on 12 VDC?
> >
> > DE N6KB
> >
> > Steve N4LQ wrote:
> >
> > >The Herc ran on 48 volts DC and used a ratchet rotary switch to change
> > >bands.
> > >Herc II runs on 12 vdc and uses relays to change bands. Both had
factory
> > >power supplies but obviously you could run the Herc II on an 80 amp 12
> vdc
> > >supply while on the old Herc you were confined to the factory 48v
supply.
> > >The fan on the Herc sounded like an F115 while the fan on the Herc II
was
> > >almost silent. HercII is very nice piece of gear.
> > >Steve N4LQ
> > >
> > >
> >
> >
> >
> > _______________________________________________
> > TenTec mailing list
> > TenTec@contesting.com
> > http://lists.contesting.com/mailman/listinfo/tentec
> >
>
> _______________________________________________
> TenTec mailing list
> TenTec@contesting.com
> http://lists.contesting.com/mailman/listinfo/tentec
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