Topband: Loss Question

[donovanf at starpower.net]

Hi Bob, 


As Wes points out, the AC6LA calculator is overly simplified and not 
very accurate. Despite that, the answer to your question remains the same: 


The additional loss caused by a 50 ohm coaxial cable feeding a 36 
ohm load is insignificant at 1.8 MHz. 


73 
Frank 
W3LPL 

----- Original Message -----

From: "Robert L. Chortek" <Robert.Chortek at berliner.com> 
To: donovanf at starpower.net 
Sent: Thursday, October 25, 2018 6:00:48 PM 
Subject: Re: Topband: Loss Question 



That's a GREAT calculator Frank. Thanks again! 




From: Topband <topband-bounces at contesting.com> on behalf of donovanf at starpower.net <donovanf at starpower.net> 
Sent: Thursday, October 25, 2018 10:52 AM 
To: topband at contesting.com 
Subject: Re: Topband: Loss Question 


This is an alternative calculator: 


www.qsl.net/co8tw/Coax_Calculator.htm 


For 200 feet of RG-213 terminated in a 36 ohm load, 
the additional cable loss at 1.8 MHz is only 0.026 dB . 


73 
Frank 
W3LPL 




----- Original Message ----- 




On 10/25/2018 10:24 AM, Chortek, Robert L. wrote: 
> Does anyone know how much power would be lost if a resonant antenna with an Impedance of say, e.g. 36 Ohms is fed with 50 Ohm coax? Is there a good source where I could look up this kind of information? 
> 
> 
> Thanks! 
> 
> 
> Bob/AA6VB 
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> Searchable Archives: http://www.contesting.com/_topband - Topband Reflector 
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