In a message dated 2/3/01 1:57:31 AM Eastern Standard Time, 2@vc.net writes:
>
> >
> >One popular HF amp today (I own one) is designed so that when one flips
> >the power switch the fil, fan and HV all come on. There is no CW/SSB
> >switch as on some of the older amps. i.e. SB-220 and Drake L-4B (I
> >recall). This amp runs a pr of 3-500Zs with a key down output of 1500+
> >watts. Duty cycle is 50% or 10 min on and 10 min off. The standby
> >switch only defeats the T/R switching. And yes, it's full QSK.
> >
> >Now, my 8877 on 144 MHz is a different animal. It takes a full 1 min
> >for the heaters to get the cathode up to operating temp. Here, it's
> >smart to wait til the thing warms up.
>
> 1 minute is way short of the recommended warm-up time.
>
> .
>
> - Rich..., 805.386.3734, www.vcnet.com/measures.
> end
> =========================================================
Eimac actually recommends 5 minutes.
Dave, WT8R
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