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Re: Building a Digital Mode Data Interface Cable


 

yes, the 10uF cap is to keep stay RF out.


On Mon, May 10, 2021 at 10:43 PM Gary Priest (KC8JOK) via <kc8jok=[email protected]> wrote:
Greetings,

My Tx-500 arrived on Friday! I made a few contacts with it during the Arkansas QSO on Saturday while doing some portable work at a local park. I can tell this is going to be a great radio.

I do a good bit of Winlink so would like to get up on digital modes. Lab599¡¯s documentation shows a 10uF cap on the data cable. The audio interfaces I have from ZLP Electronics and XGGcomms already have isolated audio circuits. Is this 10uF cap protecting the audio chipset in the TX-500 from stray RF? This is a new one to me so the nerd in me is at least curious why this is different from other radios. I did notice their reference cable has leads to connect to a computer sound card which I assume lacks the isolation built in to purpose made radio interface gear.

73,

Gary
KC8JOK



--
73,

Matt Allinson, KG8TRS

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