attenuator


militaryoperator
 

I have this 100W 30db attenuator but the i/p measures 14 ohms to gnd, the o/p 51 ohm to gnd and the through is 61 ohm. 

I'm thinking its duff? 

Ben


Gordon REASON <gordonj.reason@...>
 

Looking at an online attenuator calculator , for a Pi style , fo 50 Ohms .........                                                         some 52 ohms to ground at each end , and 789 ohms across the top ...........

So , a choice ......... it's either been fried ........ or the label has been changed .........

Do you have a Vna , to check it with ?

On 05 March 2021 at 12:01 "militaryoperator via groups.io" <Military1944@...> wrote:

I have this 100W 30db attenuator but the i/p measures 14 ohms to gnd, the o/p 51 ohm to gnd and the through is 61 ohm. 

I'm thinking its duff? 

Ben


Colin Ranson
 

Ben,

 

Mine measures 50ohm in and out to ground and 92ohm through (inner to inner)

 

Hope this helps

 

Colin de G8LBS.

 

 

Sent from Mail for Windows 10

 

From: militaryoperator via groups.io
Sent: 05 March 2021 12:01
To: UKMicrowaves@groups.io
Subject: [UKMicrowaves] attenuator

 

I have this 100W 30db attenuator but the i/p measures 14 ohms to gnd, the o/p 51 ohm to gnd and the through is 61 ohm. 

 

I'm thinking its duff? 

 

Ben

 


militaryoperator
 

Ben,
 
Mine measures 50ohm in and out to ground and 92ohm through (inner to inner)
 
Hope this helps
 
Colin de G8LBS.
 

Yes, other ones here are similar. I think I have a nice heatsink!

Ben


Alan Melia
 


Hi Ben here isa calculator of what it should read usinga DMM from the files area of the Group
 
 
Alan
G3NYK

----- Original Message -----
Sent: Friday, March 05, 2021 12:01 PM
Subject: [UKMicrowaves] attenuator

I have this 100W 30db attenuator but the i/p measures 14 ohms to gnd, the o/p 51 ohm to gnd and the through is 61 ohm. 

I'm thinking its duff? 

Ben
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