[Elecraft] 50 and 75 ohm BNC Connectors

[Bob Nielsen]

My DirecTV HD receiver uses (i.f.) frequencies up to 2150 MHz.  Some  
stacked TV distribution systems (multiple-dwelling units) go up to 3  
GHz.  Of course, these don't use BNCs.

73, Bob N7XY

On Aug 2, 2007, at 8:22 AM, Goody K3NG wrote:

> Forgive my ignorance, but what applications above 1 Ghz use 75 ohm  
> impedances?  CATV is the only major 75 ohm application I can think  
> of, and that's 1 Ghz and below.
>
> Thanks and 73
> Goody
> K3NG
>
> Jim Brown wrote:
>>
>> Note another very important part of their statement -- that the 50  
>> or 75 ohm impedance of the connector matters ONLY above 1 GHz, and  
>> only then in demanding applications. At HF, VHF, and below, the  
>> ONLY things that matters are that it fits the cable, it mates with  
>> other connectors, is reasonably easy to install, and is  
>> mechanically reliable.
>>
>>
>
>
> -- 
> Blog: http://thek3ngreport.blogspot.com/
>
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