On Fri, 8 Jan 1999 01:43:57 -0800 Rich Measures <measures@vc.net> writes:
>
>>
>>
>>On Thu, 7 Jan 1999 10:18:16 -0800 Rich Measures <measures@vc.net>
>writes:
>>>
>>>>
>>>>
>>>>
>>>>On Thu, 7 Jan 1999 03:56:41 -0800 Rich Measures <measures@vc.net>
>>>writes:
>>>
>>>>>>Re: SB-220 on 10 M.
>>>>>>
>>>>>>K4AB damaged the bandswitch
>>>>>
>>>>>? Did he damage the bandswitch through error?
>>>>
>>>>Yeah, Heathkits....not voodoo.
>>>>
>>>Barring spilt coffee, the withstanding potential of the Heath SB-220
>
>>>bandswitch is slightly over 5000v.
>>
>>
>>5000V from where to where?
>>
>across open contacts
Not very believable or likely Rich. A contact spacing of .188" is barely
adequate for 2700V of RF.
>>
>>On the SSB tap, tank piv is c. 2600v.
>
>>> With deliberate mistuning, the tank piv has been measured with an
>>>oscilloscope at 3600v max.
>>
>>So obviously there was no arc then.
>
>agreed. I can not make my 220 arc by mistuning into a 50 ohm load.
>
>>Measure the voltage preceeding an arc.
>>
>We know that the switch arcs at a bit more than 5000v. We know that
>the
>normal peak HF potential across open contacts is c. 2600v.
Who is this "we" Kemo Sabe? The last time I looked at my birth
certificate it did not say Tonto.
>>........
>
>
>Rich...
>
>R. L. Measures, 805-386-3734, AG6K, www.vcnet.com/measures
>
>
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>
>
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