Re: Topband: Beverage transformer and testing

[donovanf@starpower.net]

Hi Trevor, 


Simply terminate the high impedance side of your transformer in 
a 470 ohm resistor (or almost any other resistor) and use an antenna 
analyzer to measure the input impedance of the transformer. The 
reading should be consistent the impedance ratio of the transformer. 


Sláinte 


Frank Donovan 
W3LPL 

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

From: "MR TREVOR DUNNE" <ei2glb@eircom.net> 
To: "''topband List''" <topband@contesting.com> 
Cc: "MR TREVOR DUNNE" <ei2glb@eircom.net> 
Sent: Friday, February 2, 2018 3:33:32 PM 
Subject: Topband: Beverage transformer and testing 

Hi I know it's probably been covered here hundreds of times but I'm looking to 
make a matching Transformer for a 550ft beverage to 75 ohm coax, 

I have so bn73-202 cores 

Also how can I test it once it's built 

Thanks 
Trevor 
EI2GLB 
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