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Re: [TowerTalk] 4 square - collins hybrid measurements/component values

To: towertalk@contesting.com
Subject: Re: [TowerTalk] 4 square - collins hybrid measurements/component values
From: "Lux, Jim" <jim@luxfamily.com>
Date: Sat, 26 Dec 2020 18:35:21 -0800
List-post: <mailto:towertalk@contesting.com>
On 12/26/20 5:55 PM, Haring family wrote:
No need to duplicate... check ON4UN/5th. He has a model of the Collins
coupler included that Roy W7EL made up for EZNEC, I think. Dan AC6LA may
have something for it for AutoEZ also.

regards,

Dave N3AC


I have the 3rd edition which doesn't have the models. But what I'm really looking for is measured data on a real box (with all the parasitics).




On Sat, Dec 26, 2020 at 2:37 PM Lux, Jim <jim@luxfamily.com> wrote:

I'm putting together some models and I was wondering if someone has
actual measured 4 port data for the LC Collins hybrid.

I've got some sample capacitance and inductance values

(e.g. for 80m, 436 pF and 2.18 uH)

I'm assuming that the transformer is "well coupled" so the mutual L is
almost the same as the inductance of the winding.


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