Paul, Which amplifier(s) are bothered by these "spikes"? Sounds like you
really went to great difficulty to modify your very FB Ten Tec transceiver
to allow use into some amplifier that didn't like these spikes?
Certainly the HENRY amps have no difficulty with this as there is no problem
with accepting full transceiver power.
73, Dan Magro W7RF, (President WARC 1999, member SCDXC, SCCC)
Manufacturers Rep & Distributor for HENRY RF Power 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 Paul Christensen
> Sent: Tuesday, May 04, 1999 7:56 AM
> To: amps@contesting.com
> Subject: Re: [AMPS] Purchase Recommendation?
>
>
>
> >I go along with Pete and Rich here. Also, I'm told that some of the
> >modern radios will give a 'spike' of RF on key down without an input,
> because
> >the gain is high, and the switching transients give a 'glitch', and the
> ALC
> >won't operate fast enough to catch it.
>
> After taking great pains to modify the ALC circuitry in my
> Ten-Tec Omni Six
> Plus, it became apparent to me, for the first time, that a tradeoff exists
> between choosing an optimum ALC time constant that minimizes the
> R.F. spike
> and a time constant that will preserve the leading-edge CW waveform
> integrity. This appears to be most problematic at power levels less than
> the transceiver's maximum rated power, oftentimes square in the
> power range
> where the amplifier is best driven. In my opinion, all
> transceivers should
> incorporate a seperate ALC or Drive control for this purpose.
>
> -Paul, W9AC
>
>
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