[Amps] Vacuum Relay Question

[Aleksandar Petkovic]

The discussion pertained to relay connections in the matching network 
for a HF vertical antenna.

73, Alek, VK6APK

On 28/07/2021 7:07 am, Jim wrote:
> But there is no lightning inside of an amplifier... Hopefully. :)
>
>
> Thanks
> 73
> Jim W7RY
>
> On 7/26/2021 12:59 PM, Jim Brown wrote:
>> I don't understand this concern. Vacuum relays have been widely used 
>> for decades for antenna switching in power amps, where the impedance, 
>> and thus voltage and current, are the same as for this application.
>>
>> What am I missing?
>>
>> 73, Jim K9YC
>>
>> On 7/26/2021 3:08 AM, Rob Atkinson wrote:
>>> I would not use a vacuum relay in a matching network for a 1/4 w.
>>> antenna.   That's a low v. high current setup calling for open frame
>>> contactors or at least large open relays.  Perhaps this information
>>> will render your question moot.
>>
>>
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