[AMPS] RE; Henry 8k

[Radiodan W7RF]

This explains why I lost HV transformers when the shack was out in the
garage!
I thought it was just old and tired!

73, Dan Magro W7RF, (member SCDXC, SCCC)
Manufacturers Rep & distributor for HENRY Amplifiers.
www.radiodan.com <http://www.radiodan.com>     RFpower@radiodan.com
<mailto:RFpower@radiodan.com> A trip to our web site is worth the click!




> -----Original Message-----
> From: owner-amps@contesting.com [mailto:owner-amps@contesting.com]On
> Behalf Of Peter Chadwick
> Sent: Wednesday, December 09, 1998 5:12 AM
> To: 'amps'
> Subject: [AMPS] RE; Henry 8k
>
>
>
> Don't lose sight of the fact that if a linear IS linear (as
> opposed to only
> being thought so!) tuning up at full output and then backing off the drive
> just gives exactly the same gain with lower output, but lower DC to RF
> efficiency. Hopefully, but not totally necessarily, lower IMD as
> well. Since
> we aren't talking here of broadcast type service and powers, the amount of
> juice out of the mains doesn't worry us too unduly.
>
> I guess there might be something to be said for having xfmrs running about
> 10 degrees above ambient - it discourages condensation on them!  If the
> shack gets cold, then the effects of turning on the heat when you
> go in can
> lead to condensation on items of high thermal mass - it's especially a
> problem with machines such as lathes and mills, but HV xfmrs are much the
> same in respect of high thermal mass.
>
> 73
>
> Peter G3RZP
>
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>


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