Dan -- I have never measured the fil V in an AL-811. The only RF-Tx
amplifiers that do not benefit from a step-start are those that already
have one. The Henry 3K-A is one example.
On Dec 27, 2004, at 6:53 AM, Dan wrote:
Richard & others...
How does the Ameritron 811H fit into this same questions thanks
Dan
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*********** REPLY SEPARATOR ***********
On 12/27/2004 at 6:48 AM R.Measures wrote:
On Dec 27, 2004, at 2:33 AM, Larry Stowell wrote:
I have a SB-220 and am wondering if it is better to turn it off when
its not going to be used for a couple of hours? I turn my radio's on
early morning and leave them on most of the day.
The good thing about leaving a SB-220 on is that it has a reasonable
of
filament-V, so not much emissive life will be wasted by wasting the
electricity. The bad thing about starting a SB-220 is that the inrush
current caused by the C-filter exceeds the peak-I rating of the ON-OFF
switch, which will eventually cause the switch to fail. For longest
life, install a step-start such as the one at Figure 1 on my Web site
and oil the fan bearings every two years.
- cheers, Larry
Larry K1ZW
Durham, NC
Richard L. Measures, AG6K, 805.386.3734. www.somis.org
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Richard L. Measures, AG6K, 805.386.3734. www.somis.org
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