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Re: R-4C Filter Insertion Loss?


 

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Craig,

Can you quantify what "huge" means in your observation?

73/jeff/ac0c
alpha-charlie-zero-charlie
On 1/30/2025 10:26 AM, Craig W8CS via groups.io wrote:

Is it normal to see a big insertion loss with the Network Sciences filters? I see a huge insertion loss with the 250Hz filter, and also somewhat degraded with the 1500Hz filter. These date 76/77 so not sure if they accumulate loss with age. Fortunately I mostly use 500/SSB filters, but the loss renders especially the 250Hz filter to be almost useless.?
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I've swapped them with the 500Hz socket and the loss follows the filter itself.?
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Just curious if y'all have seen something similar. Thanks
--
Craig/W8CS
Greenville, SC

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