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Re: PD526 Duplexer Tuning


 

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Pads are not needed with a VNA.? They might be needed if you¡¯re using a sig gen or tracking generator as a source that doesn¡¯t hold its output level constant when presented with a mismatch, but you wouldn¡¯t be turning for return loss then, would you?

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Pass gets tuned for return loss.

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Notch gets tuned for maximum insertion loss.

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From: [email protected] <[email protected]> On Behalf Of George Csahanin
Sent: Wednesday, April 23, 2025 12:53 PM
To: [email protected]
Subject: Re: [repeater-builder] PD526 Duplexer Tuning

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I've used 3db for this and 10db pads. Successful either? way. But the pads are needed.?

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I'm working on a 900 Quantar right now folding back power but it is an internal issue with the PA, not duplexer not antenna system

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GeorgeC W2DB

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